Merge 4.9-rc3 into tty-next

We want the serial/tty fixes in here as well.

Signed-off-by: Greg Kroah-Hartman <[e-mail]>

CREDITS

···
 
 N: Martin Kepplinger
 E: [e-mail]
-E: [e-mail]
+E: [e-mail]
 W: http://www.martinkepplinger.com
 D: mma8452 accelerators iio driver
-D: Kernel cleanups
+D: pegasus_notetaker input driver
+D: Kernel fixes and cleanups
 S: Garnisonstraße 26
 S: 4020 Linz
 S: Austria

Documentation/device-mapper/dm-raid.txt

···
 	with a reshape in progress.
 1.9.0   Add support for RAID level takeover/reshape/region size
 	and set size reduction.
+1.9.1   Fix activation of existing RAID 4/10 mapped devices

Documentation/devicetree/bindings/clock/uniphier-clock.txt

···
 		reg = <0x61840000 0x4000>;
 
 		clock {
-			compatible = "socionext,uniphier-ld20-clock";
+			compatible = "socionext,uniphier-ld11-clock";
 			#clock-cells = <1>;
 		};
 
···
 21: USB3 ch1 PHY1
 
 
-Media I/O (MIO) clock
----------------------
+Media I/O (MIO) clock, SD clock
+-------------------------------
 
 Required properties:
 - compatible: should be one of the following:
···
     "socionext,uniphier-ld4-mio-clock"  - for LD4 SoC.
     "socionext,uniphier-pro4-mio-clock" - for Pro4 SoC.
     "socionext,uniphier-sld8-mio-clock" - for sLD8 SoC.
-    "socionext,uniphier-pro5-mio-clock" - for Pro5 SoC.
-    "socionext,uniphier-pxs2-mio-clock" - for PXs2/LD6b SoC.
+    "socionext,uniphier-pro5-sd-clock"  - for Pro5 SoC.
+    "socionext,uniphier-pxs2-sd-clock"  - for PXs2/LD6b SoC.
     "socionext,uniphier-ld11-mio-clock" - for LD11 SoC.
-    "socionext,uniphier-ld20-mio-clock" - for LD20 SoC.
+    "socionext,uniphier-ld20-sd-clock"  - for LD20 SoC.
 - #clock-cells: should be 1.
 
 Example:
···
 		reg = <0x59810000 0x800>;
 
 		clock {
-			compatible = "socionext,uniphier-ld20-mio-clock";
+			compatible = "socionext,uniphier-ld11-mio-clock";
 			#clock-cells = <1>;
 		};
 
···
 		reg = <0x59820000 0x200>;
 
 		clock {
-			compatible = "socionext,uniphier-ld20-peri-clock";
+			compatible = "socionext,uniphier-ld11-peri-clock";
 			#clock-cells = <1>;
 		};
 

Documentation/devicetree/bindings/reset/uniphier-reset.txt

···
 
 Required properties:
 - compatible: should be one of the following:
-    "socionext,uniphier-sld3-reset" - for PH1-sLD3 SoC.
-    "socionext,uniphier-ld4-reset"  - for PH1-LD4 SoC.
-    "socionext,uniphier-pro4-reset" - for PH1-Pro4 SoC.
-    "socionext,uniphier-sld8-reset" - for PH1-sLD8 SoC.
-    "socionext,uniphier-pro5-reset" - for PH1-Pro5 SoC.
-    "socionext,uniphier-pxs2-reset" - for ProXstream2/PH1-LD6b SoC.
-    "socionext,uniphier-ld11-reset" - for PH1-LD11 SoC.
-    "socionext,uniphier-ld20-reset" - for PH1-LD20 SoC.
+    "socionext,uniphier-sld3-reset" - for sLD3 SoC.
+    "socionext,uniphier-ld4-reset"  - for LD4 SoC.
+    "socionext,uniphier-pro4-reset" - for Pro4 SoC.
+    "socionext,uniphier-sld8-reset" - for sLD8 SoC.
+    "socionext,uniphier-pro5-reset" - for Pro5 SoC.
+    "socionext,uniphier-pxs2-reset" - for PXs2/LD6b SoC.
+    "socionext,uniphier-ld11-reset" - for LD11 SoC.
+    "socionext,uniphier-ld20-reset" - for LD20 SoC.
 - #reset-cells: should be 1.
 
 Example:
 
 	sysctrl@61840000 {
-		compatible = "socionext,uniphier-ld20-sysctrl",
+		compatible = "socionext,uniphier-ld11-sysctrl",
 			     "simple-mfd", "syscon";
 		reg = <0x61840000 0x4000>;
 
 		reset {
-			compatible = "socionext,uniphier-ld20-reset";
+			compatible = "socionext,uniphier-ld11-reset";
 			#reset-cells = <1>;
 		};
 
···
 	};
 
 
-Media I/O (MIO) reset
----------------------
+Media I/O (MIO) reset, SD reset
+-------------------------------
 
 Required properties:
 - compatible: should be one of the following:
-    "socionext,uniphier-sld3-mio-reset" - for PH1-sLD3 SoC.
-    "socionext,uniphier-ld4-mio-reset"  - for PH1-LD4 SoC.
-    "socionext,uniphier-pro4-mio-reset" - for PH1-Pro4 SoC.
-    "socionext,uniphier-sld8-mio-reset" - for PH1-sLD8 SoC.
-    "socionext,uniphier-pro5-mio-reset" - for PH1-Pro5 SoC.
-    "socionext,uniphier-pxs2-mio-reset" - for ProXstream2/PH1-LD6b SoC.
-    "socionext,uniphier-ld11-mio-reset" - for PH1-LD11 SoC.
-    "socionext,uniphier-ld20-mio-reset" - for PH1-LD20 SoC.
+    "socionext,uniphier-sld3-mio-reset" - for sLD3 SoC.
+    "socionext,uniphier-ld4-mio-reset"  - for LD4 SoC.
+    "socionext,uniphier-pro4-mio-reset" - for Pro4 SoC.
+    "socionext,uniphier-sld8-mio-reset" - for sLD8 SoC.
+    "socionext,uniphier-pro5-sd-reset"  - for Pro5 SoC.
+    "socionext,uniphier-pxs2-sd-reset"  - for PXs2/LD6b SoC.
+    "socionext,uniphier-ld11-mio-reset" - for LD11 SoC.
+    "socionext,uniphier-ld20-sd-reset"  - for LD20 SoC.
 - #reset-cells: should be 1.
 
 Example:
 
 	mioctrl@59810000 {
-		compatible = "socionext,uniphier-ld20-mioctrl",
+		compatible = "socionext,uniphier-ld11-mioctrl",
 			     "simple-mfd", "syscon";
 		reg = <0x59810000 0x800>;
 
 		reset {
-			compatible = "socionext,uniphier-ld20-mio-reset";
+			compatible = "socionext,uniphier-ld11-mio-reset";
 			#reset-cells = <1>;
 		};
 
···
 
 Required properties:
 - compatible: should be one of the following:
-    "socionext,uniphier-ld4-peri-reset"  - for PH1-LD4 SoC.
-    "socionext,uniphier-pro4-peri-reset" - for PH1-Pro4 SoC.
-    "socionext,uniphier-sld8-peri-reset" - for PH1-sLD8 SoC.
-    "socionext,uniphier-pro5-peri-reset" - for PH1-Pro5 SoC.
-    "socionext,uniphier-pxs2-peri-reset" - for ProXstream2/PH1-LD6b SoC.
-    "socionext,uniphier-ld11-peri-reset" - for PH1-LD11 SoC.
-    "socionext,uniphier-ld20-peri-reset" - for PH1-LD20 SoC.
+    "socionext,uniphier-ld4-peri-reset"  - for LD4 SoC.
+    "socionext,uniphier-pro4-peri-reset" - for Pro4 SoC.
+    "socionext,uniphier-sld8-peri-reset" - for sLD8 SoC.
+    "socionext,uniphier-pro5-peri-reset" - for Pro5 SoC.
+    "socionext,uniphier-pxs2-peri-reset" - for PXs2/LD6b SoC.
+    "socionext,uniphier-ld11-peri-reset" - for LD11 SoC.
+    "socionext,uniphier-ld20-peri-reset" - for LD20 SoC.
 - #reset-cells: should be 1.
 
 Example:
 
 	perictrl@59820000 {
-		compatible = "socionext,uniphier-ld20-perictrl",
+		compatible = "socionext,uniphier-ld11-perictrl",
 			     "simple-mfd", "syscon";
 		reg = <0x59820000 0x200>;
 
 		reset {
-			compatible = "socionext,uniphier-ld20-peri-reset";
+			compatible = "socionext,uniphier-ld11-peri-reset";
 			#reset-cells = <1>;
 		};
 

Documentation/devicetree/bindings/serial/cdns,uart.txt

···
 Binding for Cadence UART Controller
 
 Required properties:
-- compatible : should be "cdns,uart-r1p8", or "xlnx,xuartps"
+- compatible :
+  Use "xlnx,xuartps","cdns,uart-r1p8" for Zynq-7xxx SoC.
+  Use "xlnx,zynqmp-uart","cdns,uart-r1p12" for Zynq Ultrascale+ MPSoC.
 - reg: Should contain UART controller registers location and length.
 - interrupts: Should contain UART controller interrupts.
 - clocks: Must contain phandles to the UART clocks

Documentation/devicetree/bindings/serial/renesas,sci-serial.txt

···
     - "renesas,scifb-r8a73a4" for R8A73A4 (R-Mobile APE6) SCIFB compatible UART.
     - "renesas,scifa-r8a7740" for R8A7740 (R-Mobile A1) SCIFA compatible UART.
     - "renesas,scifb-r8a7740" for R8A7740 (R-Mobile A1) SCIFB compatible UART.
+    - "renesas,scif-r8a7743" for R8A7743 (RZ/G1M) SCIF compatible UART.
+    - "renesas,scifa-r8a7743" for R8A7743 (RZ/G1M) SCIFA compatible UART.
+    - "renesas,scifb-r8a7743" for R8A7743 (RZ/G1M) SCIFB compatible UART.
+    - "renesas,hscif-r8a7743" for R8A7743 (RZ/G1M) HSCIF compatible UART.
+    - "renesas,scif-r8a7745" for R8A7745 (RZ/G1E) SCIF compatible UART.
+    - "renesas,scifa-r8a7745" for R8A7745 (RZ/G1E) SCIFA compatible UART.
+    - "renesas,scifb-r8a7745" for R8A7745 (RZ/G1E) SCIFB compatible UART.
+    - "renesas,hscif-r8a7745" for R8A7745 (RZ/G1E) HSCIF compatible UART.
     - "renesas,scif-r8a7778" for R8A7778 (R-Car M1) SCIF compatible UART.
     - "renesas,scif-r8a7779" for R8A7779 (R-Car H1) SCIF compatible UART.
     - "renesas,scif-r8a7790" for R8A7790 (R-Car H2) SCIF compatible UART.

Documentation/devicetree/bindings/usb/dwc2.txt

···
 - g-use-dma: enable dma usage in gadget driver.
 - g-rx-fifo-size: size of rx fifo size in gadget mode.
 - g-np-tx-fifo-size: size of non-periodic tx fifo size in gadget mode.
-
-Deprecated properties:
-- g-tx-fifo-size: size of periodic tx fifo per endpoint (except ep0)
-  in gadget mode.
+- g-tx-fifo-size: size of periodic tx fifo per endpoint (except ep0) in gadget mode.
 
 Example:
 

Documentation/gpio/board.txt

···
 description of the deprecated integer-based GPIO interface please refer to
 gpio-legacy.txt (actually, there is no real mapping possible with the old
 interface; you just fetch an integer from somewhere and request the
-corresponding GPIO.
+corresponding GPIO).
 
 All platforms can enable the GPIO library, but if the platform strictly
 requires GPIO functionality to be present, it needs to select GPIOLIB from its
···
 
 Since the "led" GPIOs are mapped as active-high, this example will switch their
 signals to 1, i.e. enabling the LEDs. And for the "power" GPIO, which is mapped
-as active-low, its actual signal will be 0 after this code. Contrary to the legacy
-integer GPIO interface, the active-low property is handled during mapping and is
-thus transparent to GPIO consumers.
+as active-low, its actual signal will be 0 after this code. Contrary to the
+legacy integer GPIO interface, the active-low property is handled during
+mapping and is thus transparent to GPIO consumers.
+
+A set of functions such as gpiod_set_value() is available to work with
+the new descriptor-oriented interface.

MAINTAINERS

···
 F:	arch/arm/configs/mvebu_*_defconfig
 
 ARM/Marvell Berlin SoC support
+M:	Jisheng Zhang <[e-mail]>
 M:	Sebastian Hesselbarth <[e-mail]>
 L:	[e-mail] (moderated for non-subscribers)
 S:	Maintained
···
 S:	Maintained
 F:	scripts/get_maintainer.pl
 
+GENWQE (IBM Generic Workqueue Card)
+M:	Frank Haverkamp <[e-mail]>
+M:	Gabriel Krisman Bertazi <[e-mail]>
+S:	Supported
+F:	drivers/misc/genwqe/
+
 GFS2 FILE SYSTEM
 M:	Steven Whitehouse <[e-mail]>
 M:	Bob Peterson <[e-mail]>
···
 F:	drivers/media/dvb-frontends/mn88473*
 
 MODULE SUPPORT
+M:	Jessica Yu <[e-mail]>
 M:	Rusty Russell <[e-mail]>
 S:	Maintained
 F:	include/linux/module.h

Makefile

···
 VERSION = 4
 PATCHLEVEL = 9
 SUBLEVEL = 0
-EXTRAVERSION = -rc2
+EXTRAVERSION = -rc3
 NAME = Psychotic Stoned Sheep
 
 # *DOCUMENTATION*

arch/arc/Kconfig

···
 	select PERF_USE_VMALLOC
 	select HAVE_DEBUG_STACKOVERFLOW
 	select HAVE_GENERIC_DMA_COHERENT
+	select HAVE_KERNEL_GZIP
+	select HAVE_KERNEL_LZMA
 
 config MIGHT_HAVE_PCI
 	bool
···
 config ARC_HAS_COH_CACHES
 	def_bool n
 
-config ARC_MCIP
-	bool "ARConnect Multicore IP (MCIP) Support "
-	depends on ISA_ARCV2
-	help
-	  This IP block enables SMP in ARC-HS38 cores.
-	  It provides for cross-core interrupts, multi-core debug
-	  hardware semaphores, shared memory,....
-
 config NR_CPUS
 	int "Maximum number of CPUs (2-4096)"
 	range 2 4096
···
 	  entry point and spin wait for Master's signal.
 
 endif	#SMP
+
+config ARC_MCIP
+	bool "ARConnect Multicore IP (MCIP) Support "
+	depends on ISA_ARCV2
+	default y if SMP
+	help
+	  This IP block enables SMP in ARC-HS38 cores.
+	  It provides for cross-core interrupts, multi-core debug
+	  hardware semaphores, shared memory,....
 
 menuconfig ARC_CACHE
 	bool "Enable Cache Support"
···
 config ARC_DBG_TLB_PARANOIA
 	bool "Paranoia Checks in Low Level TLB Handlers"
 	default n
-
-config ARC_DBG_TLB_MISS_COUNT
-	bool "Profile TLB Misses"
-	default n
-	select DEBUG_FS
-	help
-	  Counts number of I and D TLB Misses and exports them via Debugfs
-	  The counters can be cleared via Debugfs as well
 
 endif
 

arch/arc/Makefile

···
 
 cflags-$(atleast_gcc44)			+= -fsection-anchors
 
-cflags-$(CONFIG_ARC_HAS_LLSC)		+= -mlock
-cflags-$(CONFIG_ARC_HAS_SWAPE)		+= -mswape
-
 ifdef CONFIG_ISA_ARCV2
 
 ifndef CONFIG_ARC_HAS_LL64

arch/arc/boot/Makefile

···
 
 suffix-y := bin
 suffix-$(CONFIG_KERNEL_GZIP)	:= gz
+suffix-$(CONFIG_KERNEL_LZMA)	:= lzma
 
-targets += uImage uImage.bin uImage.gz
-extra-y += vmlinux.bin vmlinux.bin.gz
+targets += uImage
+targets += uImage.bin
+targets += uImage.gz
+targets += uImage.lzma
+extra-y += vmlinux.bin
+extra-y += vmlinux.bin.gz
+extra-y += vmlinux.bin.lzma
 
 $(obj)/vmlinux.bin: vmlinux FORCE
 	$(call if_changed,objcopy)
···
 $(obj)/vmlinux.bin.gz: $(obj)/vmlinux.bin FORCE
 	$(call if_changed,gzip)
 
+$(obj)/vmlinux.bin.lzma: $(obj)/vmlinux.bin FORCE
+	$(call if_changed,lzma)
+
 $(obj)/uImage.bin: $(obj)/vmlinux.bin FORCE
 	$(call if_changed,uimage,none)
 
 $(obj)/uImage.gz: $(obj)/vmlinux.bin.gz FORCE
 	$(call if_changed,uimage,gzip)
+
+$(obj)/uImage.lzma: $(obj)/vmlinux.bin.lzma FORCE
+	$(call if_changed,uimage,lzma)
 
 $(obj)/uImage: $(obj)/uImage.$(suffix-y)
 	@ln -sf $(notdir $<) $@

arch/arc/include/asm/arcregs.h

···
 	struct cpuinfo_arc_bpu bpu;
 	struct bcr_identity core;
 	struct bcr_isa isa;
+	const char *details, *name;
 	unsigned int vec_base;
 	struct cpuinfo_arc_ccm iccm, dccm;
 	struct {
-		unsigned int swap:1, norm:1, minmax:1, barrel:1, crc:1, pad1:3,
+		unsigned int swap:1, norm:1, minmax:1, barrel:1, crc:1, swape:1, pad1:2,
 			     fpu_sp:1, fpu_dp:1, pad2:6,
 			     debug:1, ap:1, smart:1, rtt:1, pad3:4,
 			     timer0:1, timer1:1, rtc:1, gfrc:1, pad4:4;

arch/arc/include/asm/cache.h

···
 extern char *arc_cache_mumbojumbo(int cpu_id, char *buf, int len);
 extern void read_decode_cache_bcr(void);
 
-extern int ioc_exists;
+extern int ioc_enable;
 extern unsigned long perip_base, perip_end;
 
 #endif	/* !__ASSEMBLY__ */

arch/arc/include/asm/elf.h

···
  * the loader.  We need to make sure that it is out of the way of the program
  * that it will "exec", and that there is sufficient room for the brk.
  */
-#define ELF_ET_DYN_BASE		(2 * TASK_SIZE / 3)
+#define ELF_ET_DYN_BASE		(2UL * TASK_SIZE / 3)
 
 /*
  * When the program starts, a1 contains a pointer to a function to be

arch/arc/include/asm/mcip.h

···
 #define IDU_M_DISTRI_DEST		0x2
 };
 
+struct mcip_bcr {
+#ifdef CONFIG_CPU_BIG_ENDIAN
+		unsigned int pad3:8,
+			     idu:1, llm:1, num_cores:6,
+			     iocoh:1,  gfrc:1, dbg:1, pad2:1,
+			     msg:1, sem:1, ipi:1, pad:1,
+			     ver:8;
+#else
+		unsigned int ver:8,
+			     pad:1, ipi:1, sem:1, msg:1,
+			     pad2:1, dbg:1, gfrc:1, iocoh:1,
+			     num_cores:6, llm:1, idu:1,
+			     pad3:8;
+#endif
+};
+
 /*
  * MCIP programming model
  *

arch/arc/include/asm/module.h

···
 struct mod_arch_specific {
 	void *unw_info;
 	int unw_sec_idx;
+	const char *secstr;
 };
 #endif
 

arch/arc/include/asm/setup.h

···
 	const char *str;
 };
 
-struct cpuinfo_data {
-	struct id_to_str info;
-	int up_range;
-};
-
 extern int root_mountflags, end_mem;
 
 void setup_processor(void);
···
 #define IS_USED_RUN(v)		((v) ? "" : "(not used) ")
 #define IS_USED_CFG(cfg)	IS_USED_RUN(IS_ENABLED(cfg))
 #define IS_AVAIL2(v, s, cfg)	IS_AVAIL1(v, s), IS_AVAIL1(v, IS_USED_CFG(cfg))
+#define IS_AVAIL3(v, v2, s)	IS_AVAIL1(v, s), IS_AVAIL1(v, IS_DISABLED_RUN(v2))
 
 #endif /* __ASMARC_SETUP_H */

arch/arc/include/asm/syscalls.h

···
 int sys_cacheflush(uint32_t, uint32_t uint32_t);
 int sys_arc_settls(void *);
 int sys_arc_gettls(void);
+int sys_arc_usr_cmpxchg(int *, int, int);
 
 #include <asm-generic/syscalls.h>
 

arch/arc/include/uapi/asm/unistd.h

···
 
 #define NR_syscalls	__NR_syscalls
 
+/* Generic syscall (fs/filesystems.c - lost in asm-generic/unistd.h */
+#define __NR_sysfs		(__NR_arch_specific_syscall + 3)
+
 /* ARC specific syscall */
 #define __NR_cacheflush		(__NR_arch_specific_syscall + 0)
 #define __NR_arc_settls		(__NR_arch_specific_syscall + 1)
 #define __NR_arc_gettls		(__NR_arch_specific_syscall + 2)
+#define __NR_arc_usr_cmpxchg	(__NR_arch_specific_syscall + 4)
 
 __SYSCALL(__NR_cacheflush, sys_cacheflush)
 __SYSCALL(__NR_arc_settls, sys_arc_settls)
 __SYSCALL(__NR_arc_gettls, sys_arc_gettls)
-
-
-/* Generic syscall (fs/filesystems.c - lost in asm-generic/unistd.h */
-#define __NR_sysfs		(__NR_arch_specific_syscall + 3)
+__SYSCALL(__NR_arc_usr_cmpxchg, sys_arc_usr_cmpxchg)
 __SYSCALL(__NR_sysfs, sys_sysfs)
 
 #undef __SYSCALL

arch/arc/kernel/mcip.c

···
 #include <asm/mcip.h>
 #include <asm/setup.h>
 
-static char smp_cpuinfo_buf[128];
-static int idu_detected;
-
 static DEFINE_RAW_SPINLOCK(mcip_lock);
+
+#ifdef CONFIG_SMP
+
+static char smp_cpuinfo_buf[128];
 
 static void mcip_setup_per_cpu(int cpu)
 {
···
 
 static void mcip_probe_n_setup(void)
 {
-	struct mcip_bcr {
-#ifdef CONFIG_CPU_BIG_ENDIAN
-		unsigned int pad3:8,
-			     idu:1, llm:1, num_cores:6,
-			     iocoh:1,  gfrc:1, dbg:1, pad2:1,
-			     msg:1, sem:1, ipi:1, pad:1,
-			     ver:8;
-#else
-		unsigned int ver:8,
-			     pad:1, ipi:1, sem:1, msg:1,
-			     pad2:1, dbg:1, gfrc:1, iocoh:1,
-			     num_cores:6, llm:1, idu:1,
-			     pad3:8;
-#endif
-	} mp;
+	struct mcip_bcr mp;
 
 	READ_BCR(ARC_REG_MCIP_BCR, mp);
 
···
 		IS_AVAIL1(mp.gfrc, "GFRC"));
 
 	cpuinfo_arc700[0].extn.gfrc = mp.gfrc;
-	idu_detected = mp.idu;
 
 	if (mp.dbg) {
 		__mcip_cmd_data(CMD_DEBUG_SET_SELECT, 0, 0xf);
···
 	.ipi_send	= mcip_ipi_send,
 	.ipi_clear	= mcip_ipi_clear,
 };
+
+#endif
 
 /***************************************************************************
  * ARCv2 Interrupt Distribution Unit (IDU)
···
 	/* Read IDU BCR to confirm nr_irqs */
 	int nr_irqs = of_irq_count(intc);
 	int i, irq;
+	struct mcip_bcr mp;
 
-	if (!idu_detected)
+	READ_BCR(ARC_REG_MCIP_BCR, mp);
+
+	if (!mp.idu)
 		panic("IDU not detected, but DeviceTree using it");
 
 	pr_info("MCIP: IDU referenced from Devicetree %d irqs\n", nr_irqs);

arch/arc/kernel/module.c

···
 			      char *secstr, struct module *mod)
 {
 #ifdef CONFIG_ARC_DW2_UNWIND
-	int i;
-
 	mod->arch.unw_sec_idx = 0;
 	mod->arch.unw_info = NULL;
-
-	for (i = 1; i < hdr->e_shnum; i++) {
-		if (strcmp(secstr+sechdrs[i].sh_name, ".eh_frame") == 0) {
-			mod->arch.unw_sec_idx = i;
-			break;
-		}
-	}
+	mod->arch.secstr = secstr;
 #endif
 	return 0;
 }
···
 		       unsigned int relsec,	/* sec index for relo sec */
 		       struct module *module)
 {
-	int i, n;
+	int i, n, relo_type;
 	Elf32_Rela *rel_entry = (void *)sechdrs[relsec].sh_addr;
 	Elf32_Sym *sym_entry, *sym_sec;
-	Elf32_Addr relocation;
-	Elf32_Addr location;
-	Elf32_Addr sec_to_patch;
-	int relo_type;
+	Elf32_Addr relocation, location, tgt_addr;
+	unsigned int tgtsec;
 
-	sec_to_patch = sechdrs[sechdrs[relsec].sh_info].sh_addr;
+	/*
+	 * @relsec has relocations e.g. .rela.init.text
+	 * @tgtsec is section to patch e.g. .init.text
+	 */
+	tgtsec = sechdrs[relsec].sh_info;
+	tgt_addr = sechdrs[tgtsec].sh_addr;
 	sym_sec = (Elf32_Sym *) sechdrs[symindex].sh_addr;
 	n = sechdrs[relsec].sh_size / sizeof(*rel_entry);
 
-	pr_debug("\n========== Module Sym reloc ===========================\n");
-	pr_debug("Section to fixup %x\n", sec_to_patch);
+	pr_debug("\nSection to fixup %s @%x\n",
+		 module->arch.secstr + sechdrs[tgtsec].sh_name, tgt_addr);
 	pr_debug("=========================================================\n");
-	pr_debug("rela->r_off | rela->addend | sym->st_value | ADDR | VALUE\n");
+	pr_debug("r_off\tr_add\tst_value ADDRESS  VALUE\n");
 	pr_debug("=========================================================\n");
 
 	/* Loop thru entries in relocation section */
 	for (i = 0; i < n; i++) {
+		const char *s;
 
 		/* This is where to make the change */
-		location = sec_to_patch + rel_entry[i].r_offset;
+		location = tgt_addr + rel_entry[i].r_offset;
 
 		/* This is the symbol it is referring to.  Note that all
 		   undefined symbols have been resolved.  */
···
 
 		relocation = sym_entry->st_value + rel_entry[i].r_addend;
 
-		pr_debug("\t%x\t\t%x\t\t%x  %x %x [%s]\n",
-			rel_entry[i].r_offset, rel_entry[i].r_addend,
-			sym_entry->st_value, location, relocation,
-			strtab + sym_entry->st_name);
+		if (sym_entry->st_name == 0 && ELF_ST_TYPE (sym_entry->st_info) == STT_SECTION) {
+			s = module->arch.secstr + sechdrs[sym_entry->st_shndx].sh_name;
+		} else {
+			s = strtab + sym_entry->st_name;
+		}
+
+		pr_debug("   %x\t%x\t%x %x %x [%s]\n",
+			 rel_entry[i].r_offset, rel_entry[i].r_addend,
+			 sym_entry->st_value, location, relocation, s);
 
 		/* This assumes modules are built with -mlong-calls
 		 * so any branches/jumps are absolute 32 bit jmps
···
 			goto relo_err;
 
 	}
+
+	if (strcmp(module->arch.secstr+sechdrs[tgtsec].sh_name, ".eh_frame") == 0)
+		module->arch.unw_sec_idx = tgtsec;
+
 	return 0;
 
 relo_err:

arch/arc/kernel/process.c

···
 	return task_thread_info(current)->thr_ptr;
 }
 
+SYSCALL_DEFINE3(arc_usr_cmpxchg, int *, uaddr, int, expected, int, new)
+{
+	int uval;
+	int ret;
+
+	/*
+	 * This is only for old cores lacking LLOCK/SCOND, which by defintion
+	 * can't possibly be SMP. Thus doesn't need to be SMP safe.
+	 * And this also helps reduce the overhead for serializing in
+	 * the UP case
+	 */
+	WARN_ON_ONCE(IS_ENABLED(CONFIG_SMP));
+
+	if (!access_ok(VERIFY_WRITE, uaddr, sizeof(int)))
+		return -EFAULT;
+
+	preempt_disable();
+
+	ret = __get_user(uval, uaddr);
+	if (ret)
+		goto done;
+
+	if (uval != expected)
+		ret = -EAGAIN;
+	else
+		ret = __put_user(new, uaddr);
+
+done:
+	preempt_enable();
+
+	return ret;
+}
+
 void arch_cpu_idle(void)
 {
 	/* sleep, but enable all interrupts before committing */

arch/arc/kernel/setup.c

···
 
 struct cpuinfo_arc cpuinfo_arc700[NR_CPUS];
 
+static const struct id_to_str arc_cpu_rel[] = {
+#ifdef CONFIG_ISA_ARCOMPACT
+	{ 0x34, "R4.10"},
+	{ 0x35, "R4.11"},
+#else
+	{ 0x51, "R2.0" },
+	{ 0x52, "R2.1" },
+	{ 0x53, "R3.0" },
+#endif
+	{ 0x00, NULL   }
+};
+
+static const struct id_to_str arc_cpu_nm[] = {
+#ifdef CONFIG_ISA_ARCOMPACT
+	{ 0x20, "ARC 600"   },
+	{ 0x30, "ARC 770"   },  /* 750 identified seperately */
+#else
+	{ 0x40, "ARC EM"  },
+	{ 0x50, "ARC HS38"  },
+#endif
+	{ 0x00, "Unknown"   }
+};
+
 static void read_decode_ccm_bcr(struct cpuinfo_arc *cpu)
 {
 	if (is_isa_arcompact()) {
···
 	struct bcr_timer timer;
 	struct bcr_generic bcr;
 	struct cpuinfo_arc *cpu = &cpuinfo_arc700[smp_processor_id()];
+	const struct id_to_str *tbl;
+
 	FIX_PTR(cpu);
 
 	READ_BCR(AUX_IDENTITY, cpu->core);
 	READ_BCR(ARC_REG_ISA_CFG_BCR, cpu->isa);
+
+	for (tbl = &arc_cpu_rel[0]; tbl->id != 0; tbl++) {
+		if (cpu->core.family == tbl->id) {
+			cpu->details = tbl->str;
+			break;
+		}
+	}
+
+	for (tbl = &arc_cpu_nm[0]; tbl->id != 0; tbl++) {
+		if ((cpu->core.family & 0xF0) == tbl->id)
+			break;
+	}
+	cpu->name = tbl->str;
 
 	READ_BCR(ARC_REG_TIMERS_BCR, timer);
 	cpu->extn.timer0 = timer.t0;
···
 	cpu->extn.swap = read_aux_reg(ARC_REG_SWAP_BCR) ? 1 : 0;        /* 1,3 */
 	cpu->extn.crc = read_aux_reg(ARC_REG_CRC_BCR) ? 1 : 0;
 	cpu->extn.minmax = read_aux_reg(ARC_REG_MIXMAX_BCR) > 1 ? 1 : 0; /* 2 */
+	cpu->extn.swape = (cpu->core.family >= 0x34) ? 1 :
+				IS_ENABLED(CONFIG_ARC_HAS_SWAPE);
+
 	READ_BCR(ARC_REG_XY_MEM_BCR, cpu->extn_xymem);
 
 	/* Read CCM BCRs for boot reporting even if not enabled in Kconfig */
···
 	cpu->extn.rtt = bcr.ver ? 1 : 0;
 
 	cpu->extn.debug = cpu->extn.ap | cpu->extn.smart | cpu->extn.rtt;
+
+	/* some hacks for lack of feature BCR info in old ARC700 cores */
+	if (is_isa_arcompact()) {
+		if (!cpu->isa.ver)	/* ISA BCR absent, use Kconfig info */
+			cpu->isa.atomic = IS_ENABLED(CONFIG_ARC_HAS_LLSC);
+		else
+			cpu->isa.atomic = cpu->isa.atomic1;
+
+		cpu->isa.be = IS_ENABLED(CONFIG_CPU_BIG_ENDIAN);
+
+		 /* there's no direct way to distinguish 750 vs. 770 */
+		if (unlikely(cpu->core.family < 0x34 || cpu->mmu.ver < 3))
+			cpu->name = "ARC750";
+	}
 }
-
-static const struct cpuinfo_data arc_cpu_tbl[] = {
-#ifdef CONFIG_ISA_ARCOMPACT
-	{ {0x20, "ARC 600"      }, 0x2F},
-	{ {0x30, "ARC 700"      }, 0x33},
-	{ {0x34, "ARC 700 R4.10"}, 0x34},
-	{ {0x35, "ARC 700 R4.11"}, 0x35},
-#else
-	{ {0x50, "ARC HS38 R2.0"}, 0x51},
-	{ {0x52, "ARC HS38 R2.1"}, 0x52},
-	{ {0x53, "ARC HS38 R3.0"}, 0x53},
-#endif
-	{ {0x00, NULL		} }
-};
-
 
 static char *arc_cpu_mumbojumbo(int cpu_id, char *buf, int len)
 {
 	struct cpuinfo_arc *cpu = &cpuinfo_arc700[cpu_id];
 	struct bcr_identity *core = &cpu->core;
-	const struct cpuinfo_data *tbl;
-	char *isa_nm;
-	int i, be, atomic;
-	int n = 0;
+	int i, n = 0;
 
 	FIX_PTR(cpu);
-
-	if (is_isa_arcompact()) {
-		isa_nm = "ARCompact";
-		be = IS_ENABLED(CONFIG_CPU_BIG_ENDIAN);
-
-		atomic = cpu->isa.atomic1;
-		if (!cpu->isa.ver)	/* ISA BCR absent, use Kconfig info */
-			atomic = IS_ENABLED(CONFIG_ARC_HAS_LLSC);
-	} else {
-		isa_nm = "ARCv2";
-		be = cpu->isa.be;
-		atomic = cpu->isa.atomic;
-	}
 
 	n += scnprintf(buf + n, len - n,
 		       "\nIDENTITY\t: ARCVER [%#02x] ARCNUM [%#02x] CHIPID [%#4x]\n",
 		       core->family, core->cpu_id, core->chip_id);
 
-	for (tbl = &arc_cpu_tbl[0]; tbl->info.id != 0; tbl++) {
-		if ((core->family >= tbl->info.id) &&
-		    (core->family <= tbl->up_range)) {
-			n += scnprintf(buf + n, len - n,
-				       "processor [%d]\t: %s (%s ISA) %s\n",
-				       cpu_id, tbl->info.str, isa_nm,
-				       IS_AVAIL1(be, "[Big-Endian]"));
-			break;
-		}
-	}
-
-	if (tbl->info.id == 0)
-		n += scnprintf(buf + n, len - n, "UNKNOWN ARC Processor\n");
+	n += scnprintf(buf + n, len - n, "processor [%d]\t: %s %s (%s ISA) %s\n",
+		       cpu_id, cpu->name, cpu->details,
+		       is_isa_arcompact() ? "ARCompact" : "ARCv2",
+		       IS_AVAIL1(cpu->isa.be, "[Big-Endian]"));
 
 	n += scnprintf(buf + n, len - n, "Timers\t\t: %s%s%s%s\nISA Extn\t: ",
 		       IS_AVAIL1(cpu->extn.timer0, "Timer0 "),
···
 				 CONFIG_ARC_HAS_RTC));
 
 	n += i = scnprintf(buf + n, len - n, "%s%s%s%s%s",
-			   IS_AVAIL2(atomic, "atomic ", CONFIG_ARC_HAS_LLSC),
+			   IS_AVAIL2(cpu->isa.atomic, "atomic ", CONFIG_ARC_HAS_LLSC),
 			   IS_AVAIL2(cpu->isa.ldd, "ll64 ", CONFIG_ARC_HAS_LL64),
 			   IS_AVAIL1(cpu->isa.unalign, "unalign (not used)"));
 
···
 		       IS_AVAIL1(cpu->extn.swap, "swap "),
 		       IS_AVAIL1(cpu->extn.minmax, "minmax "),
 		       IS_AVAIL1(cpu->extn.crc, "crc "),
-		       IS_AVAIL2(1, "swape", CONFIG_ARC_HAS_SWAPE));
+		       IS_AVAIL2(cpu->extn.swape, "swape", CONFIG_ARC_HAS_SWAPE));
 
 	if (cpu->bpu.ver)
 		n += scnprintf(buf + n, len - n,
···
 
 	FIX_PTR(cpu);
 
-	n += scnprintf(buf + n, len - n,
-		       "Vector Table\t: %#x\nPeripherals\t: %#lx:%#lx\n",
-		       cpu->vec_base, perip_base, perip_end);
+	n += scnprintf(buf + n, len - n, "Vector Table\t: %#x\n", cpu->vec_base);
 
 	if (cpu->extn.fpu_sp || cpu->extn.fpu_dp)
 		n += scnprintf(buf + n, len - n, "FPU\t\t: %s%s\n",
···
 	 * way to pass it w/o having to kmalloc/free a 2 byte string.
 	 * Encode cpu-id as 0xFFcccc, which is decoded by show routine.
 	 */
-	return *pos < num_possible_cpus() ? cpu_to_ptr(*pos) : NULL;
+	return *pos < nr_cpu_ids ? cpu_to_ptr(*pos) : NULL;
 }
 
 static void *c_next(struct seq_file *m, void *v, loff_t *pos)

arch/arc/kernel/troubleshoot.c

···
 	if (!user_mode(regs))
 		show_stacktrace(current, regs);
 }
-
-#ifdef CONFIG_DEBUG_FS
-
-#include <linux/module.h>
-#include <linux/fs.h>
-#include <linux/mount.h>
-#include <linux/pagemap.h>
-#include <linux/init.h>
-#include <linux/namei.h>
-#include <linux/debugfs.h>
-
-static struct dentry *test_dentry;
-static struct dentry *test_dir;
-static struct dentry *test_u32_dentry;
-
-static u32 clr_on_read = 1;
-
-#ifdef CONFIG_ARC_DBG_TLB_MISS_COUNT
-u32 numitlb, numdtlb, num_pte_not_present;
-
-static int fill_display_data(char *kbuf)
-{
-	size_t num = 0;
-	num += sprintf(kbuf + num, "I-TLB Miss %x\n", numitlb);
-	num += sprintf(kbuf + num, "D-TLB Miss %x\n", numdtlb);
-	num += sprintf(kbuf + num, "PTE not present %x\n", num_pte_not_present);
-
-	if (clr_on_read)
-		numitlb = numdtlb = num_pte_not_present = 0;
-
-	return num;
-}
-
-static int tlb_stats_open(struct inode *inode, struct file *file)
-{
-	file->private_data = (void *)__get_free_page(GFP_KERNEL);
-	return 0;
-}
-
-/* called on user read(): display the counters */
-static ssize_t tlb_stats_output(struct file *file,	/* file descriptor */
-				char __user *user_buf,	/* user buffer */
-				size_t len,		/* length of buffer */
-				loff_t *offset)		/* offset in the file */
-{
-	size_t num;
-	char *kbuf = (char *)file->private_data;
-
-	/* All of the data can he shoved in one iteration */
-	if (*offset != 0)
-		return 0;
-
-	num = fill_display_data(kbuf);
-
-	/* simple_read_from_buffer() is helper for copy to user space
-	   It copies up to @2 (num) bytes from kernel buffer @4 (kbuf) at offset
-	   @3 (offset) into the user space address starting at @1 (user_buf).
-	   @5 (len) is max size of user buffer
-	 */
-	return simple_read_from_buffer(user_buf, num, offset, kbuf, len);
-}
-
-/* called on user write : clears the counters */
-static ssize_t tlb_stats_clear(struct file *file, const char __user *user_buf,
-			       size_t length, loff_t *offset)
-{
-	numitlb = numdtlb = num_pte_not_present = 0;
-	return length;
-}
-
-static int tlb_stats_close(struct inode *inode, struct file *file)
-{
-	free_page((unsigned long)(file->private_data));
-	return 0;
-}
-
-static const struct file_operations tlb_stats_file_ops = {
-	.read = tlb_stats_output,
-	.write = tlb_stats_clear,
-	.open = tlb_stats_open,
-	.release = tlb_stats_close
-};
-#endif
-
-static int __init arc_debugfs_init(void)
-{
-	test_dir = debugfs_create_dir("arc", NULL);
-
-#ifdef CONFIG_ARC_DBG_TLB_MISS_COUNT
-	test_dentry = debugfs_create_file("tlb_stats", 0444, test_dir, NULL,
-					  &tlb_stats_file_ops);
-#endif
-
-	test_u32_dentry =
-	    debugfs_create_u32("clr_on_read", 0444, test_dir, &clr_on_read);
-
-	return 0;
-}
-
-module_init(arc_debugfs_init);
-
-static void __exit arc_debugfs_exit(void)
-{
-	debugfs_remove(test_u32_dentry);
-	debugfs_remove(test_dentry);
-	debugfs_remove(test_dir);
-}
-module_exit(arc_debugfs_exit);
-
-#endif

arch/arc/mm/cache.c

···
 #include <asm/setup.h>
 
 static int l2_line_sz;
-int ioc_exists;
-volatile int slc_enable = 1, ioc_enable = 1;
+static int ioc_exists;
+int slc_enable = 1, ioc_enable = 1;
 unsigned long perip_base = ARC_UNCACHED_ADDR_SPACE; /* legacy value for boot */
 unsigned long perip_end = 0xFFFFFFFF; /* legacy value */
 
···
 	PR_CACHE(&cpuinfo_arc700[c].icache, CONFIG_ARC_HAS_ICACHE, "I-Cache");
 	PR_CACHE(&cpuinfo_arc700[c].dcache, CONFIG_ARC_HAS_DCACHE, "D-Cache");
 
-	if (!is_isa_arcv2())
-                return buf;
-
 	p = &cpuinfo_arc700[c].slc;
 	if (p->ver)
 		n += scnprintf(buf + n, len - n,
 			       "SLC\t\t: %uK, %uB Line%s\n",
 			       p->sz_k, p->line_len, IS_USED_RUN(slc_enable));
 
-	if (ioc_exists)
-		n += scnprintf(buf + n, len - n, "IOC\t\t:%s\n",
-				IS_DISABLED_RUN(ioc_enable));
+	n += scnprintf(buf + n, len - n, "Peripherals\t: %#lx%s%s\n",
+		       perip_base,
+		       IS_AVAIL3(ioc_exists, ioc_enable, ", IO-Coherency "));
 
 	return buf;
 }
···
 	}
 
 	READ_BCR(ARC_REG_CLUSTER_BCR, cbcr);
-	if (cbcr.c && ioc_enable)
+	if (cbcr.c)
 		ioc_exists = 1;
+	else
+		ioc_enable = 0;
 
 	/* HS 2.0 didn't have AUX_VOL */
 	if (cpuinfo_arc700[cpu].core.family > 0x51) {
···
 			read_aux_reg(ARC_REG_SLC_CTRL) | SLC_CTRL_DISABLE);
 	}
 
-	if (is_isa_arcv2() && ioc_exists) {
+	if (is_isa_arcv2() && ioc_enable) {
 		/* IO coherency base - 0x8z */
 		write_aux_reg(ARC_REG_IO_COH_AP0_BASE, 0x80000);
 		/* IO coherency aperture size - 512Mb: 0x8z-0xAz */

arch/arc/mm/dma.c

···
 	 *   -For coherent data, Read/Write to buffers terminate early in cache
 	 *   (vs. always going to memory - thus are faster)
 	 */
-	if ((is_isa_arcv2() && ioc_exists) ||
+	if ((is_isa_arcv2() && ioc_enable) ||
 	    (attrs & DMA_ATTR_NON_CONSISTENT))
 		need_coh = 0;
 
···
 	int is_non_coh = 1;
 
 	is_non_coh = (attrs & DMA_ATTR_NON_CONSISTENT) ||
-			(is_isa_arcv2() && ioc_exists);
+			(is_isa_arcv2() && ioc_enable);
 
 	if (PageHighMem(page) || !is_non_coh)
 		iounmap((void __force __iomem *)vaddr);

arch/arc/mm/tlb.c

···
 	char super_pg[64] = "";
 
 	if (p_mmu->s_pg_sz_m)
-		scnprintf(super_pg, 64, "%dM Super Page%s, ",
+		scnprintf(super_pg, 64, "%dM Super Page %s",
 			  p_mmu->s_pg_sz_m,
 			  IS_USED_CFG(CONFIG_TRANSPARENT_HUGEPAGE));
 
 	n += scnprintf(buf + n, len - n,
-		      "MMU [v%x]\t: %dk PAGE, %sJTLB %d (%dx%d), uDTLB %d, uITLB %d %s%s\n",
+		      "MMU [v%x]\t: %dk PAGE, %sJTLB %d (%dx%d), uDTLB %d, uITLB %d%s%s\n",
 		       p_mmu->ver, p_mmu->pg_sz_k, super_pg,
 		       p_mmu->sets * p_mmu->ways, p_mmu->sets, p_mmu->ways,
 		       p_mmu->u_dtlb, p_mmu->u_itlb,
-		       IS_AVAIL2(p_mmu->pae, "PAE40 ", CONFIG_ARC_HAS_PAE40));
+		       IS_AVAIL2(p_mmu->pae, ", PAE40 ", CONFIG_ARC_HAS_PAE40));
 
 	return buf;
 }

arch/arc/mm/tlbex.S

···
 
 2:
 
-#ifdef CONFIG_ARC_DBG_TLB_MISS_COUNT
-	and.f 0, r0, _PAGE_PRESENT
-	bz   1f
-	ld   r3, [num_pte_not_present]
-	add  r3, r3, 1
-	st   r3, [num_pte_not_present]
-1:
-#endif
-
 .endm
 
 ;-----------------------------------------------------------------
···
 
 	TLBMISS_FREEUP_REGS
 
-#ifdef CONFIG_ARC_DBG_TLB_MISS_COUNT
-	ld  r0, [@numitlb]
-	add r0, r0, 1
-	st  r0, [@numitlb]
-#endif
-
 	;----------------------------------------------------------------
 	; Get the PTE corresponding to V-addr accessed, r2 is setup with EFA
 	LOAD_FAULT_PTE
···
 ENTRY(EV_TLBMissD)
 
 	TLBMISS_FREEUP_REGS
-
-#ifdef CONFIG_ARC_DBG_TLB_MISS_COUNT
-	ld  r0, [@numdtlb]
-	add r0, r0, 1
-	st  r0, [@numdtlb]
-#endif
 
 	;----------------------------------------------------------------
 	; Get the PTE corresponding to V-addr accessed

arch/arm/boot/dts/ste-snowball.dts

···
 			arm,primecell-periphid = <0x10480180>;
 			max-frequency = <100000000>;
 			bus-width = <4>;
+			cap-sd-highspeed;
 			cap-mmc-highspeed;
+			sd-uhs-sdr12;
+			sd-uhs-sdr25;
+			/* All direction control is used */
+			st,sig-dir-cmd;
+			st,sig-dir-dat0;
+			st,sig-dir-dat2;
+			st,sig-dir-dat31;
+			st,sig-pin-fbclk;
+			full-pwr-cycle;
 			vmmc-supply = <&ab8500_ldo_aux3_reg>;
 			vqmmc-supply = <&vmmci>;
 			pinctrl-names = "default", "sleep";
 			pinctrl-0 = <&sdi0_default_mode>;
 			pinctrl-1 = <&sdi0_sleep_mode>;
 
-			cd-gpios  = <&gpio6 26 GPIO_ACTIVE_LOW>; // 218
+			/* GPIO218 MMC_CD */
+			cd-gpios  = <&gpio6 26 GPIO_ACTIVE_LOW>;
 
 			status = "okay";
 		};
···
 					/* VMMCI level-shifter enable */
 					snowball_cfg3 {
 						pins = "GPIO217_AH12";
-						ste,config = <&gpio_out_lo>;
+						ste,config = <&gpio_out_hi>;
 					};
 					/* VMMCI level-shifter voltage select */
 					snowball_cfg4 {

arch/arm/boot/dts/uniphier-pro5.dtsi

···
 };
 
 &mio_clk {
-	compatible = "socionext,uniphier-pro5-mio-clock";
+	compatible = "socionext,uniphier-pro5-sd-clock";
 };
 
 &mio_rst {
-	compatible = "socionext,uniphier-pro5-mio-reset";
+	compatible = "socionext,uniphier-pro5-sd-reset";
 };
 
 &peri_clk {

arch/arm/boot/dts/uniphier-pxs2.dtsi

···
 };
 
 &mio_clk {
-	compatible = "socionext,uniphier-pxs2-mio-clock";
+	compatible = "socionext,uniphier-pxs2-sd-clock";
 };
 
 &mio_rst {
-	compatible = "socionext,uniphier-pxs2-mio-reset";
+	compatible = "socionext,uniphier-pxs2-sd-reset";
 };
 
 &peri_clk {

arch/arm/boot/dts/vf500.dtsi

···
 			global_timer: timer@40002200 {
 				compatible = "arm,cortex-a9-global-timer";
 				reg = <0x40002200 0x20>;
-				interrupts = <GIC_PPI 11 IRQ_TYPE_LEVEL_HIGH>;
+				interrupts = <GIC_PPI 11 IRQ_TYPE_EDGE_RISING>;
 				interrupt-parent = <&intc>;
 				clocks = <&clks VF610_CLK_PLATFORM_BUS>;
 			};

arch/arm/configs/multi_v7_defconfig

···
 CONFIG_PWM_TEGRA=y
 CONFIG_PWM_VT8500=y
 CONFIG_PHY_HIX5HD2_SATA=y
+CONFIG_E1000E=y
 CONFIG_PWM_STI=y
 CONFIG_PWM_BCM2835=y
 CONFIG_PWM_BRCMSTB=m

arch/arm/mach-imx/gpc.c

···
 static int imx_gpc_genpd_init(struct device *dev, struct regulator *pu_reg)
 {
 	struct clk *clk;
-	int i;
+	int i, ret;
 
 	imx6q_pu_domain.reg = pu_reg;
 
···
 	if (!IS_ENABLED(CONFIG_PM_GENERIC_DOMAINS))
 		return 0;
 
-	pm_genpd_init(&imx6q_pu_domain.base, NULL, false);
-	return of_genpd_add_provider_onecell(dev->of_node,
-					     &imx_gpc_onecell_data);
+	for (i = 0; i < ARRAY_SIZE(imx_gpc_domains); i++)
+		pm_genpd_init(imx_gpc_domains[i], NULL, false);
 
+	ret =  of_genpd_add_provider_onecell(dev->of_node,
+					     &imx_gpc_onecell_data);
+	if (ret)
+		goto power_off;
+
+	return 0;
+
+power_off:
+	imx6q_pm_pu_power_off(&imx6q_pu_domain.base);
 clk_err:
 	while (i--)
 		clk_put(imx6q_pu_domain.clk[i]);
+	imx6q_pu_domain.reg = NULL;
 	return -EINVAL;
 }
 

arch/arm/mach-imx/mach-imx6q.c

···
 				ksz9021rn_phy_fixup);
 		phy_register_fixup_for_uid(PHY_ID_KSZ9031, MICREL_PHY_ID_MASK,
 				ksz9031rn_phy_fixup);
-		phy_register_fixup_for_uid(PHY_ID_AR8031, 0xffffffff,
+		phy_register_fixup_for_uid(PHY_ID_AR8031, 0xffffffef,
 				ar8031_phy_fixup);
 		phy_register_fixup_for_uid(PHY_ID_AR8035, 0xffffffef,
 				ar8035_phy_fixup);

arch/arm/mach-mvebu/Kconfig

···
 	select CACHE_L2X0
 	select ARM_CPU_SUSPEND
 	select MACH_MVEBU_ANY
+	select MVEBU_CLK_COREDIV
 
 config MACH_ARMADA_370
 	bool "Marvell Armada 370 boards"
···
 	select CPU_PJ4B
 	select MACH_MVEBU_V7
 	select PINCTRL_ARMADA_370
-	select MVEBU_CLK_COREDIV
 	help
 	  Say 'Y' here if you want your kernel to support boards based
 	  on the Marvell Armada 370 SoC with device tree.
···
 	select HAVE_SMP
 	select MACH_MVEBU_V7
 	select PINCTRL_ARMADA_375
-	select MVEBU_CLK_COREDIV
 	help
 	  Say 'Y' here if you want your kernel to support boards based
 	  on the Marvell Armada 375 SoC with device tree.
···
 	select HAVE_SMP
 	select MACH_MVEBU_V7
 	select PINCTRL_ARMADA_38X
-	select MVEBU_CLK_COREDIV
 	help
 	  Say 'Y' here if you want your kernel to support boards based
 	  on the Marvell Armada 380/385 SoC with device tree.

arch/arm/mach-uniphier/Kconfig

···
 config ARCH_UNIPHIER
 	bool "Socionext UniPhier SoCs"
 	depends on ARCH_MULTI_V7
+	select ARCH_HAS_RESET_CONTROLLER
 	select ARM_AMBA
 	select ARM_GLOBAL_TIMER
 	select ARM_GIC

arch/arm64/Kconfig.platforms

···
 
 config ARCH_UNIPHIER
 	bool "Socionext UniPhier SoC Family"
+	select ARCH_HAS_RESET_CONTROLLER
 	select PINCTRL
 	help
 	  This enables support for Socionext UniPhier SoC family.

arch/arm64/boot/dts/broadcom/ns2-svk.dts

···
 		nand-ecc-mode = "hw";
 		nand-ecc-strength = <8>;
 		nand-ecc-step-size = <512>;
+		nand-bus-width = <16>;
+		brcm,nand-oob-sector-size = <16>;
 		#address-cells = <1>;
 		#size-cells = <1>;
 	};

arch/arm64/boot/dts/freescale/fsl-ls1043a.dtsi

···
 			     <1 14 0xf08>, /* Physical Non-Secure PPI */
 			     <1 11 0xf08>, /* Virtual PPI */
 			     <1 10 0xf08>; /* Hypervisor PPI */
+		fsl,erratum-a008585;
 	};
 
 	pmu {

arch/arm64/boot/dts/freescale/fsl-ls2080a.dtsi

···
 			     <1 14 4>, /* Physical Non-Secure PPI, active-low */
 			     <1 11 4>, /* Virtual PPI, active-low */
 			     <1 10 4>; /* Hypervisor PPI, active-low */
+		fsl,erratum-a008585;
 	};
 
 	pmu {

arch/arm64/boot/dts/marvell/armada-cp110-master.dtsi

···
 				#address-cells = <0x1>;
 				#size-cells = <0x0>;
 				cell-index = <1>;
-				clocks = <&cpm_syscon0 0 3>;
+				clocks = <&cpm_syscon0 1 21>;
 				status = "disabled";
 			};
 

arch/arm64/boot/dts/rockchip/rk3368-geekbox.dts

···
 	cap-mmc-highspeed;
 	clock-frequency = <150000000>;
 	disable-wp;
-	keep-power-in-suspend;
 	non-removable;
 	num-slots = <1>;
 	vmmc-supply = <&vcc_io>;
···
 			};
 
 			vcc_sd: SWITCH_REG1 {
-				regulator-always-on;
-				regulator-boot-on;
 				regulator-name = "vcc_sd";
 			};
 

arch/arm64/boot/dts/rockchip/rk3368-orion-r68-meta.dts

···
 		gpio = <&gpio3 11 GPIO_ACTIVE_LOW>;
 		regulator-min-microvolt = <1800000>;
 		regulator-max-microvolt = <3300000>;
-		regulator-always-on;
-		regulator-boot-on;
 		vin-supply = <&vcc_io>;
 	};
 
···
 	bus-width = <8>;
 	cap-mmc-highspeed;
 	disable-wp;
-	keep-power-in-suspend;
 	mmc-pwrseq = <&emmc_pwrseq>;
 	mmc-hs200-1_2v;
 	mmc-hs200-1_8v;
···
 	clock-freq-min-max = <400000 50000000>;
 	cap-sd-highspeed;
 	card-detect-delay = <200>;
-	keep-power-in-suspend;
 	num-slots = <1>;
 	pinctrl-names = "default";
 	pinctrl-0 = <&sdmmc_clk &sdmmc_cmd &sdmmc_cd &sdmmc_bus4>;

arch/arm64/boot/dts/socionext/uniphier-ld20.dtsi

···
 			reg = <0x59801000 0x400>;
 		};
 
-		mioctrl@59810000 {
-			compatible = "socionext,uniphier-mioctrl",
+		sdctrl@59810000 {
+			compatible = "socionext,uniphier-ld20-sdctrl",
 				     "simple-mfd", "syscon";
 			reg = <0x59810000 0x800>;
 
-			mio_clk: clock {
-				compatible = "socionext,uniphier-ld20-mio-clock";
+			sd_clk: clock {
+				compatible = "socionext,uniphier-ld20-sd-clock";
 				#clock-cells = <1>;
 			};
 
-			mio_rst: reset {
-				compatible = "socionext,uniphier-ld20-mio-reset";
+			sd_rst: reset {
+				compatible = "socionext,uniphier-ld20-sd-reset";
 				#reset-cells = <1>;
 			};
 		};

arch/arm64/include/asm/memory.h

···
 #define _virt_addr_valid(kaddr)	pfn_valid(__pa(kaddr) >> PAGE_SHIFT)
 #else
 #define __virt_to_pgoff(kaddr)	(((u64)(kaddr) & ~PAGE_OFFSET) / PAGE_SIZE * sizeof(struct page))
-#define __page_to_voff(kaddr)	(((u64)(page) & ~VMEMMAP_START) * PAGE_SIZE / sizeof(struct page))
+#define __page_to_voff(page)	(((u64)(page) & ~VMEMMAP_START) * PAGE_SIZE / sizeof(struct page))
 
 #define page_to_virt(page)	((void *)((__page_to_voff(page)) | PAGE_OFFSET))
 #define virt_to_page(vaddr)	((struct page *)((__virt_to_pgoff(vaddr)) | VMEMMAP_START))

arch/arm64/mm/numa.c

···
 
 static int __init pcpu_cpu_distance(unsigned int from, unsigned int to)
 {
-	return node_distance(from, to);
+	return node_distance(early_cpu_to_node(from), early_cpu_to_node(to));
 }
 
 static void * __init pcpu_fc_alloc(unsigned int cpu, size_t size,
···
 	void *nd;
 	int tnid;
 
-	pr_info("Initmem setup node %d [mem %#010Lx-%#010Lx]\n",
-		nid, start_pfn << PAGE_SHIFT, (end_pfn << PAGE_SHIFT) - 1);
+	if (start_pfn < end_pfn)
+		pr_info("Initmem setup node %d [mem %#010Lx-%#010Lx]\n", nid,
+			start_pfn << PAGE_SHIFT, (end_pfn << PAGE_SHIFT) - 1);
+	else
+		pr_info("Initmem setup node %d [<memory-less node>]\n", nid);
 
 	nd_pa = memblock_alloc_try_nid(nd_size, SMP_CACHE_BYTES, nid);
 	nd = __va(nd_pa);

arch/cris/arch-v32/drivers/cryptocop.c

···
 	printk("print_dma_descriptors start\n");
 
 	printk("iop:\n");
-	printk("\tsid: 0x%lld\n", iop->sid);
+	printk("\tsid: 0x%llx\n", iop->sid);
 
 	printk("\tcdesc_out: 0x%p\n", iop->cdesc_out);
 	printk("\tcdesc_in: 0x%p\n", iop->cdesc_in);

arch/h8300/include/asm/thread_info.h

···
 	int		   cpu;			/* cpu we're on */
 	int		   preempt_count;	/* 0 => preemptable, <0 => BUG */
 	mm_segment_t		addr_limit;
-	struct restart_block restart_block;
 };
 
 /*
···
 	.cpu =		0,			\
 	.preempt_count = INIT_PREEMPT_COUNT,	\
 	.addr_limit	= KERNEL_DS,		\
-	.restart_block	= {			\
-		.fn = do_no_restart_syscall,	\
-	},					\
 }
 
 #define init_thread_info	(init_thread_union.thread_info)

arch/h8300/kernel/signal.c

···
 	unsigned int er0;
 
 	/* Always make any pending restarted system calls return -EINTR */
-	current_thread_info()->restart_block.fn = do_no_restart_syscall;
+	current->restart_block.fn = do_no_restart_syscall;
 
 	/* restore passed registers */
 #define COPY(r)  do { err |= get_user(regs->r, &usc->sc_##r); } while (0)

arch/powerpc/include/asm/cpuidle.h

···
 	std	r0,0(r1);					\
 	ptesync;						\
 	ld	r0,0(r1);					\
-1:	cmp	cr0,r0,r0;					\
+1:	cmpd	cr0,r0,r0;					\
 	bne	1b;						\
 	IDLE_INST;						\
 	b	.

arch/powerpc/include/asm/exception-64s.h

···
 	ld	reg,PACAKBASE(r13);	/* get high part of &label */	\
 	ori	reg,reg,(FIXED_SYMBOL_ABS_ADDR(label))@l;
 
+#define __LOAD_HANDLER(reg, label)					\
+	ld	reg,PACAKBASE(r13);					\
+	ori	reg,reg,(ABS_ADDR(label))@l;
+
 /* Exception register prefixes */
 #define EXC_HV	H
 #define EXC_STD
···
 #define kvmppc_interrupt kvmppc_interrupt_hv
 #else
 #define kvmppc_interrupt kvmppc_interrupt_pr
+#endif
+
+#ifdef CONFIG_RELOCATABLE
+#define BRANCH_TO_COMMON(reg, label)					\
+	__LOAD_HANDLER(reg, label);					\
+	mtctr	reg;							\
+	bctr
+
+#else
+#define BRANCH_TO_COMMON(reg, label)					\
+	b	label
+
 #endif
 
 #define __KVM_HANDLER_PROLOG(area, n)					\

arch/powerpc/include/asm/tlb.h

···
 	return cpumask_subset(mm_cpumask(mm),
 			      topology_sibling_cpumask(smp_processor_id()));
 }
+
+static inline int mm_is_thread_local(struct mm_struct *mm)
+{
+	return cpumask_equal(mm_cpumask(mm),
+			      cpumask_of(smp_processor_id()));
+}
+
 #else
 static inline int mm_is_core_local(struct mm_struct *mm)
+{
+	return 1;
+}
+
+static inline int mm_is_thread_local(struct mm_struct *mm)
 {
 	return 1;
 }

arch/powerpc/kernel/exceptions-64s.S

···
 /* No virt vectors corresponding with 0x0..0x100 */
 EXC_VIRT_NONE(0x4000, 0x4100)
 
+
+#ifdef CONFIG_PPC_P7_NAP
+	/*
+	 * If running native on arch 2.06 or later, check if we are waking up
+	 * from nap/sleep/winkle, and branch to idle handler.
+	 */
+#define IDLETEST(n)							\
+	BEGIN_FTR_SECTION ;						\
+	mfspr	r10,SPRN_SRR1 ;						\
+	rlwinm.	r10,r10,47-31,30,31 ;					\
+	beq-	1f ;							\
+	cmpwi	cr3,r10,2 ;						\
+	BRANCH_TO_COMMON(r10, system_reset_idle_common) ;		\
+1:									\
+	END_FTR_SECTION_IFSET(CPU_FTR_HVMODE | CPU_FTR_ARCH_206)
+#else
+#define IDLETEST NOTEST
+#endif
+
 EXC_REAL_BEGIN(system_reset, 0x100, 0x200)
 	SET_SCRATCH0(r13)
-#ifdef CONFIG_PPC_P7_NAP
-BEGIN_FTR_SECTION
-	/* Running native on arch 2.06 or later, check if we are
-	 * waking up from nap/sleep/winkle.
-	 */
-	mfspr	r13,SPRN_SRR1
-	rlwinm.	r13,r13,47-31,30,31
-	beq	9f
+	EXCEPTION_PROLOG_PSERIES(PACA_EXGEN, system_reset_common, EXC_STD,
+				 IDLETEST, 0x100)
 
-	cmpwi	cr3,r13,2
-	GET_PACA(r13)
+EXC_REAL_END(system_reset, 0x100, 0x200)
+EXC_VIRT_NONE(0x4100, 0x4200)
+
+#ifdef CONFIG_PPC_P7_NAP
+EXC_COMMON_BEGIN(system_reset_idle_common)
 	bl	pnv_restore_hyp_resource
 
 	li	r0,PNV_THREAD_RUNNING
···
 	blt	cr3,2f
 	b	pnv_wakeup_loss
 2:	b	pnv_wakeup_noloss
+#endif
 
-9:
-END_FTR_SECTION_IFSET(CPU_FTR_HVMODE | CPU_FTR_ARCH_206)
-#endif /* CONFIG_PPC_P7_NAP */
-	EXCEPTION_PROLOG_PSERIES(PACA_EXGEN, system_reset_common, EXC_STD,
-				 NOTEST, 0x100)
-EXC_REAL_END(system_reset, 0x100, 0x200)
-EXC_VIRT_NONE(0x4100, 0x4200)
 EXC_COMMON(system_reset_common, 0x100, system_reset_exception)
 
 #ifdef CONFIG_PPC_PSERIES
···
 TRAMP_KVM(PACA_EXGEN, 0xb00)
 EXC_COMMON(trap_0b_common, 0xb00, unknown_exception)
 
-
-#define LOAD_SYSCALL_HANDLER(reg)				\
-	ld	reg,PACAKBASE(r13);				\
-	ori	reg,reg,(ABS_ADDR(system_call_common))@l;
+#define LOAD_SYSCALL_HANDLER(reg)					\
+	__LOAD_HANDLER(reg, system_call_common)
 
 /* Syscall routine is used twice, in reloc-off and reloc-on paths */
 #define SYSCALL_PSERIES_1 					\

arch/powerpc/kernel/hw_breakpoint.c

···
 	if (!stepped) {
 		WARN(1, "Unable to handle hardware breakpoint. Breakpoint at "
 			"0x%lx will be disabled.", info->address);
-		perf_event_disable(bp);
+		perf_event_disable_inatomic(bp);
 		goto out;
 	}
 	/*

arch/powerpc/kernel/idle_book3s.S

···
  * Threads will spin in HMT_LOW until the lock bit is cleared.
  * r14 - pointer to core_idle_state
  * r15 - used to load contents of core_idle_state
+ * r9  - used as a temporary variable
  */
 
 core_idle_lock_held:
···
 	bne	3b
 	HMT_MEDIUM
 	lwarx	r15,0,r14
+	andi.	r9,r15,PNV_CORE_IDLE_LOCK_BIT
+	bne	core_idle_lock_held
 	blr
 
 /*
···
 	std	r9,_MSR(r1)
 	std	r1,PACAR1(r13)
 
-#ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
-	/* Tell KVM we're entering idle */
-	li	r4,KVM_HWTHREAD_IN_IDLE
-	stb	r4,HSTATE_HWTHREAD_STATE(r13)
-#endif
-
 	/*
 	 * Go to real mode to do the nap, as required by the architecture.
 	 * Also, we need to be in real mode before setting hwthread_state,
···
 
 	.globl pnv_enter_arch207_idle_mode
 pnv_enter_arch207_idle_mode:
+#ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
+	/* Tell KVM we're entering idle */
+	li	r4,KVM_HWTHREAD_IN_IDLE
+	/******************************************************/
+	/*  N O T E   W E L L    ! ! !    N O T E   W E L L   */
+	/* The following store to HSTATE_HWTHREAD_STATE(r13)  */
+	/* MUST occur in real mode, i.e. with the MMU off,    */
+	/* and the MMU must stay off until we clear this flag */
+	/* and test HSTATE_HWTHREAD_REQ(r13) in the system    */
+	/* reset interrupt vector in exceptions-64s.S.        */
+	/* The reason is that another thread can switch the   */
+	/* MMU to a guest context whenever this flag is set   */
+	/* to KVM_HWTHREAD_IN_IDLE, and if the MMU was on,    */
+	/* that would potentially cause this thread to start  */
+	/* executing instructions from guest memory in        */
+	/* hypervisor mode, leading to a host crash or data   */
+	/* corruption, or worse.                              */
+	/******************************************************/
+	stb	r4,HSTATE_HWTHREAD_STATE(r13)
+#endif
 	stb	r3,PACA_THREAD_IDLE_STATE(r13)
 	cmpwi	cr3,r3,PNV_THREAD_SLEEP
 	bge	cr3,2f
···
  * r3 - requested stop state
  */
 power_enter_stop:
+#ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
+	/* Tell KVM we're entering idle */
+	li	r4,KVM_HWTHREAD_IN_IDLE
+	/* DO THIS IN REAL MODE!  See comment above. */
+	stb	r4,HSTATE_HWTHREAD_STATE(r13)
+#endif
 /*
  * Check if the requested state is a deep idle state.
  */

arch/powerpc/kernel/process.c

···
 	/* Ensure that restore_math() will restore */
 	if (msr_diff & MSR_FP)
 		current->thread.load_fp = 1;
-#ifdef CONFIG_ALIVEC
+#ifdef CONFIG_ALTIVEC
 	if (cpu_has_feature(CPU_FTR_ALTIVEC) && msr_diff & MSR_VEC)
 		current->thread.load_vec = 1;
 #endif

arch/powerpc/kvm/book3s_hv_rm_xics.c

···
 #include <asm/ppc-opcode.h>
 #include <asm/pnv-pci.h>
 #include <asm/opal.h>
+#include <asm/smp.h>
 
 #include "book3s_xics.h"
 

arch/powerpc/mm/tlb-radix.c

···
 	if (unlikely(pid == MMU_NO_CONTEXT))
 		goto no_context;
 
-	if (!mm_is_core_local(mm)) {
+	if (!mm_is_thread_local(mm)) {
 		int lock_tlbie = !mmu_has_feature(MMU_FTR_LOCKLESS_TLBIE);
 
 		if (lock_tlbie)
···
 	if (unlikely(pid == MMU_NO_CONTEXT))
 		goto no_context;
 
-	if (!mm_is_core_local(mm)) {
+	if (!mm_is_thread_local(mm)) {
 		int lock_tlbie = !mmu_has_feature(MMU_FTR_LOCKLESS_TLBIE);
 
 		if (lock_tlbie)
···
 	pid = mm ? mm->context.id : 0;
 	if (unlikely(pid == MMU_NO_CONTEXT))
 		goto bail;
-	if (!mm_is_core_local(mm)) {
+	if (!mm_is_thread_local(mm)) {
 		int lock_tlbie = !mmu_has_feature(MMU_FTR_LOCKLESS_TLBIE);
 
 		if (lock_tlbie)
···
 {
 	unsigned long pid;
 	unsigned long addr;
-	int local = mm_is_core_local(mm);
+	int local = mm_is_thread_local(mm);
 	unsigned long ap = mmu_get_ap(psize);
 	int lock_tlbie = !mmu_has_feature(MMU_FTR_LOCKLESS_TLBIE);
 	unsigned long page_size = 1UL << mmu_psize_defs[psize].shift;

arch/s390/include/asm/ftrace.h

···
 
 #ifndef __ASSEMBLY__
 
-unsigned long return_address(int depth);
-
-#define ftrace_return_address(n) return_address(n)
+#define ftrace_return_address(n) __builtin_return_address(n)
 
 void _mcount(void);
 void ftrace_caller(void);

arch/s390/include/asm/processor.h

···
 struct mm_struct;
 struct seq_file;
 
-typedef int (*dump_trace_func_t)(void *data, unsigned long address);
+typedef int (*dump_trace_func_t)(void *data, unsigned long address, int reliable);
 void dump_trace(dump_trace_func_t func, void *data,
 		struct task_struct *task, unsigned long sp);
 

arch/s390/include/asm/unistd.h

···
 #include <uapi/asm/unistd.h>
 
 #define __IGNORE_time
+#define __IGNORE_pkey_mprotect
+#define __IGNORE_pkey_alloc
+#define __IGNORE_pkey_free
 
 #define __ARCH_WANT_OLD_READDIR
 #define __ARCH_WANT_SYS_ALARM

arch/s390/kernel/dis.c

···
 			*ptr++ = '\t';
 		ptr += print_insn(ptr, code + start, addr);
 		start += opsize;
-		printk("%s", buffer);
+		pr_cont("%s", buffer);
 		ptr = buffer;
 		ptr += sprintf(ptr, "\n          ");
 		hops++;
 	}
-	printk("\n");
+	pr_cont("\n");
 }
 
 void print_fn_code(unsigned char *code, unsigned long len)

arch/s390/kernel/dumpstack.c

···
 		if (sp < low || sp > high - sizeof(*sf))
 			return sp;
 		sf = (struct stack_frame *) sp;
+		if (func(data, sf->gprs[8], 0))
+			return sp;
 		/* Follow the backchain. */
 		while (1) {
-			if (func(data, sf->gprs[8]))
-				return sp;
 			low = sp;
 			sp = sf->back_chain;
 			if (!sp)
···
 			if (sp <= low || sp > high - sizeof(*sf))
 				return sp;
 			sf = (struct stack_frame *) sp;
+			if (func(data, sf->gprs[8], 1))
+				return sp;
 		}
 		/* Zero backchain detected, check for interrupt frame. */
 		sp = (unsigned long) (sf + 1);
···
 			return sp;
 		regs = (struct pt_regs *) sp;
 		if (!user_mode(regs)) {
-			if (func(data, regs->psw.addr))
+			if (func(data, regs->psw.addr, 1))
 				return sp;
 		}
 		low = sp;
···
 }
 EXPORT_SYMBOL_GPL(dump_trace);
 
-struct return_address_data {
-	unsigned long address;
-	int depth;
-};
-
-static int __return_address(void *data, unsigned long address)
+static int show_address(void *data, unsigned long address, int reliable)
 {
-	struct return_address_data *rd = data;
-
-	if (rd->depth--)
-		return 0;
-	rd->address = address;
-	return 1;
-}
-
-unsigned long return_address(int depth)
-{
-	struct return_address_data rd = { .depth = depth + 2 };
-
-	dump_trace(__return_address, &rd, NULL, current_stack_pointer());
-	return rd.address;
-}
-EXPORT_SYMBOL_GPL(return_address);
-
-static int show_address(void *data, unsigned long address)
-{
-	printk("([<%016lx>] %pSR)\n", address, (void *)address);
+	if (reliable)
+		printk(" [<%016lx>] %pSR \n", address, (void *)address);
+	else
+		printk("([<%016lx>] %pSR)\n", address, (void *)address);
 	return 0;
 }
 
···
 		else
 			stack = (unsigned long *)task->thread.ksp;
 	}
+	printk(KERN_DEFAULT "Stack:\n");
 	for (i = 0; i < 20; i++) {
 		if (((addr_t) stack & (THREAD_SIZE-1)) == 0)
 			break;
-		if ((i * sizeof(long) % 32) == 0)
-			printk("%s       ", i == 0 ? "" : "\n");
-		printk("%016lx ", *stack++);
+		if (i % 4 == 0)
+			printk(KERN_DEFAULT "       ");
+		pr_cont("%016lx%c", *stack++, i % 4 == 3 ? '\n' : ' ');
 	}
-	printk("\n");
 	show_trace(task, (unsigned long)sp);
 }
 
···
 	mode = user_mode(regs) ? "User" : "Krnl";
 	printk("%s PSW : %p %p", mode, (void *)regs->psw.mask, (void *)regs->psw.addr);
 	if (!user_mode(regs))
-		printk(" (%pSR)", (void *)regs->psw.addr);
-	printk("\n");
+		pr_cont(" (%pSR)", (void *)regs->psw.addr);
+	pr_cont("\n");
 	printk("           R:%x T:%x IO:%x EX:%x Key:%x M:%x W:%x "
 	       "P:%x AS:%x CC:%x PM:%x", psw->r, psw->t, psw->i, psw->e,
 	       psw->key, psw->m, psw->w, psw->p, psw->as, psw->cc, psw->pm);
-	printk(" RI:%x EA:%x", psw->ri, psw->eaba);
-	printk("\n%s GPRS: %016lx %016lx %016lx %016lx\n", mode,
+	pr_cont(" RI:%x EA:%x\n", psw->ri, psw->eaba);
+	printk("%s GPRS: %016lx %016lx %016lx %016lx\n", mode,
 	       regs->gprs[0], regs->gprs[1], regs->gprs[2], regs->gprs[3]);
 	printk("           %016lx %016lx %016lx %016lx\n",
 	       regs->gprs[4], regs->gprs[5], regs->gprs[6], regs->gprs[7]);
···
 	printk("%s: %04x ilc:%d [#%d] ", str, regs->int_code & 0xffff,
 	       regs->int_code >> 17, ++die_counter);
 #ifdef CONFIG_PREEMPT
-	printk("PREEMPT ");
+	pr_cont("PREEMPT ");
 #endif
 #ifdef CONFIG_SMP
-	printk("SMP ");
+	pr_cont("SMP ");
 #endif
 	if (debug_pagealloc_enabled())
-		printk("DEBUG_PAGEALLOC");
-	printk("\n");
+		pr_cont("DEBUG_PAGEALLOC");
+	pr_cont("\n");
 	notify_die(DIE_OOPS, str, regs, 0, regs->int_code & 0xffff, SIGSEGV);
 	print_modules();
 	show_regs(regs);

arch/s390/kernel/perf_event.c

···
 }
 arch_initcall(service_level_perf_register);
 
-static int __perf_callchain_kernel(void *data, unsigned long address)
+static int __perf_callchain_kernel(void *data, unsigned long address, int reliable)
 {
 	struct perf_callchain_entry_ctx *entry = data;
 

arch/s390/kernel/stacktrace.c

···
 	return 1;
 }
 
-static int save_address(void *data, unsigned long address)
+static int save_address(void *data, unsigned long address, int reliable)
 {
 	return __save_address(data, address, 0);
 }
 
-static int save_address_nosched(void *data, unsigned long address)
+static int save_address_nosched(void *data, unsigned long address, int reliable)
 {
 	return __save_address(data, address, 1);
 }

arch/s390/mm/hugetlbpage.c

···
 	} else if (MACHINE_HAS_EDAT2 && size == PUD_SIZE) {
 		hugetlb_add_hstate(PUD_SHIFT - PAGE_SHIFT);
 	} else {
+		hugetlb_bad_size();
 		pr_err("hugepagesz= specifies an unsupported page size %s\n",
 			string);
 		return 0;

arch/s390/mm/init.c

···
 #ifdef CONFIG_MEMORY_HOTPLUG
 int arch_add_memory(int nid, u64 start, u64 size, bool for_device)
 {
-	unsigned long normal_end_pfn = PFN_DOWN(memblock_end_of_DRAM());
-	unsigned long dma_end_pfn = PFN_DOWN(MAX_DMA_ADDRESS);
+	unsigned long zone_start_pfn, zone_end_pfn, nr_pages;
 	unsigned long start_pfn = PFN_DOWN(start);
 	unsigned long size_pages = PFN_DOWN(size);
-	unsigned long nr_pages;
-	int rc, zone_enum;
+	pg_data_t *pgdat = NODE_DATA(nid);
+	struct zone *zone;
+	int rc, i;
 
 	rc = vmem_add_mapping(start, size);
 	if (rc)
 		return rc;
 
-	while (size_pages > 0) {
-		if (start_pfn < dma_end_pfn) {
-			nr_pages = (start_pfn + size_pages > dma_end_pfn) ?
-				   dma_end_pfn - start_pfn : size_pages;
-			zone_enum = ZONE_DMA;
-		} else if (start_pfn < normal_end_pfn) {
-			nr_pages = (start_pfn + size_pages > normal_end_pfn) ?
-				   normal_end_pfn - start_pfn : size_pages;
-			zone_enum = ZONE_NORMAL;
+	for (i = 0; i < MAX_NR_ZONES; i++) {
+		zone = pgdat->node_zones + i;
+		if (zone_idx(zone) != ZONE_MOVABLE) {
+			/* Add range within existing zone limits, if possible */
+			zone_start_pfn = zone->zone_start_pfn;
+			zone_end_pfn = zone->zone_start_pfn +
+				       zone->spanned_pages;
 		} else {
-			nr_pages = size_pages;
-			zone_enum = ZONE_MOVABLE;
+			/* Add remaining range to ZONE_MOVABLE */
+			zone_start_pfn = start_pfn;
+			zone_end_pfn = start_pfn + size_pages;
 		}
-		rc = __add_pages(nid, NODE_DATA(nid)->node_zones + zone_enum,
-				 start_pfn, size_pages);
+		if (start_pfn < zone_start_pfn || start_pfn >= zone_end_pfn)
+			continue;
+		nr_pages = (start_pfn + size_pages > zone_end_pfn) ?
+			   zone_end_pfn - start_pfn : size_pages;
+		rc = __add_pages(nid, zone, start_pfn, nr_pages);
 		if (rc)
 			break;
 		start_pfn += nr_pages;
 		size_pages -= nr_pages;
+		if (!size_pages)
+			break;
 	}
 	if (rc)
 		vmem_remove_mapping(start, size);

arch/s390/oprofile/init.c

···
 #include <linux/init.h>
 #include <asm/processor.h>
 
-static int __s390_backtrace(void *data, unsigned long address)
+static int __s390_backtrace(void *data, unsigned long address, int reliable)
 {
 	unsigned int *depth = data;
 

arch/x86/entry/Makefile

···
 OBJECT_FILES_NON_STANDARD_entry_$(BITS).o   := y
 OBJECT_FILES_NON_STANDARD_entry_64_compat.o := y
 
-CFLAGS_syscall_64.o		+= -Wno-override-init
-CFLAGS_syscall_32.o		+= -Wno-override-init
+CFLAGS_syscall_64.o		+= $(call cc-option,-Wno-override-init,)
+CFLAGS_syscall_32.o		+= $(call cc-option,-Wno-override-init,)
 obj-y				:= entry_$(BITS).o thunk_$(BITS).o syscall_$(BITS).o
 obj-y				+= common.o
 

arch/x86/events/intel/core.c

···
 
 	/*
 	 * Quirk: v2 perfmon does not report fixed-purpose events, so
-	 * assume at least 3 events:
+	 * assume at least 3 events, when not running in a hypervisor:
 	 */
-	if (version > 1)
-		x86_pmu.num_counters_fixed = max((int)edx.split.num_counters_fixed, 3);
+	if (version > 1) {
+		int assume = 3 * !boot_cpu_has(X86_FEATURE_HYPERVISOR);
+
+		x86_pmu.num_counters_fixed =
+			max((int)edx.split.num_counters_fixed, assume);
+	}
 
 	if (boot_cpu_has(X86_FEATURE_PDCM)) {
 		u64 capabilities;

arch/x86/events/intel/cstate.c

···
  *			       Scope: Core
  *	MSR_CORE_C6_RESIDENCY: CORE C6 Residency Counter
  *			       perf code: 0x02
- *			       Available model: SLM,AMT,NHM,WSM,SNB,IVB,HSW,BDW,SKL
+ *			       Available model: SLM,AMT,NHM,WSM,SNB,IVB,HSW,BDW
+ *						SKL,KNL
  *			       Scope: Core
  *	MSR_CORE_C7_RESIDENCY: CORE C7 Residency Counter
  *			       perf code: 0x03
···
  *			       Scope: Core
  *	MSR_PKG_C2_RESIDENCY:  Package C2 Residency Counter.
  *			       perf code: 0x00
- *			       Available model: SNB,IVB,HSW,BDW,SKL
+ *			       Available model: SNB,IVB,HSW,BDW,SKL,KNL
  *			       Scope: Package (physical package)
  *	MSR_PKG_C3_RESIDENCY:  Package C3 Residency Counter.
  *			       perf code: 0x01
- *			       Available model: NHM,WSM,SNB,IVB,HSW,BDW,SKL
+ *			       Available model: NHM,WSM,SNB,IVB,HSW,BDW,SKL,KNL
  *			       Scope: Package (physical package)
  *	MSR_PKG_C6_RESIDENCY:  Package C6 Residency Counter.
  *			       perf code: 0x02
- *			       Available model: SLM,AMT,NHM,WSM,SNB,IVB,HSW,BDW,SKL
+ *			       Available model: SLM,AMT,NHM,WSM,SNB,IVB,HSW,BDW
+ *						SKL,KNL
  *			       Scope: Package (physical package)
  *	MSR_PKG_C7_RESIDENCY:  Package C7 Residency Counter.
  *			       perf code: 0x03
···
 
 /* Quirk flags */
 #define SLM_PKG_C6_USE_C7_MSR	(1UL << 0)
+#define KNL_CORE_C6_MSR		(1UL << 1)
 
 struct perf_cstate_msr {
 	u64	msr;
···
 	.quirks			= SLM_PKG_C6_USE_C7_MSR,
 };
 
+
+static const struct cstate_model knl_cstates __initconst = {
+	.core_events		= BIT(PERF_CSTATE_CORE_C6_RES),
+
+	.pkg_events		= BIT(PERF_CSTATE_PKG_C2_RES) |
+				  BIT(PERF_CSTATE_PKG_C3_RES) |
+				  BIT(PERF_CSTATE_PKG_C6_RES),
+	.quirks			= KNL_CORE_C6_MSR,
+};
+
+
+
 #define X86_CSTATES_MODEL(model, states)				\
 	{ X86_VENDOR_INTEL, 6, model, X86_FEATURE_ANY, (unsigned long) &(states) }
 
···
 
 	X86_CSTATES_MODEL(INTEL_FAM6_SKYLAKE_MOBILE,  snb_cstates),
 	X86_CSTATES_MODEL(INTEL_FAM6_SKYLAKE_DESKTOP, snb_cstates),
+
+	X86_CSTATES_MODEL(INTEL_FAM6_XEON_PHI_KNL, knl_cstates),
 	{ },
 };
 MODULE_DEVICE_TABLE(x86cpu, intel_cstates_match);
···
 	/* SLM has different MSR for PKG C6 */
 	if (cm->quirks & SLM_PKG_C6_USE_C7_MSR)
 		pkg_msr[PERF_CSTATE_PKG_C6_RES].msr = MSR_PKG_C7_RESIDENCY;
+
+	/* KNL has different MSR for CORE C6 */
+	if (cm->quirks & KNL_CORE_C6_MSR)
+		pkg_msr[PERF_CSTATE_CORE_C6_RES].msr = MSR_KNL_CORE_C6_RESIDENCY;
+
 
 	has_cstate_core = cstate_probe_msr(cm->core_events,
 					   PERF_CSTATE_CORE_EVENT_MAX,

arch/x86/include/asm/io.h

···
 #define arch_phys_wc_add arch_phys_wc_add
 #endif
 
+#ifdef CONFIG_X86_PAT
+extern int arch_io_reserve_memtype_wc(resource_size_t start, resource_size_t size);
+extern void arch_io_free_memtype_wc(resource_size_t start, resource_size_t size);
+#define arch_io_reserve_memtype_wc arch_io_reserve_memtype_wc
+#endif
+
 #endif /* _ASM_X86_IO_H */

arch/x86/kernel/acpi/boot.c

···
 		polarity = acpi_sci_flags & ACPI_MADT_POLARITY_MASK;
 
 	mp_override_legacy_irq(bus_irq, polarity, trigger, gsi);
+	acpi_penalize_sci_irq(bus_irq, trigger, polarity);
 
 	/*
 	 * stash over-ride to indicate we've been here

arch/x86/kernel/cpu/microcode/amd.c

···
 	 * We need the physical address of the container for both bitness since
 	 * boot_params.hdr.ramdisk_image is a physical address.
 	 */
-	cont    = __pa(container);
+	cont    = __pa_nodebug(container);
 	cont_va = container;
 #endif
 

arch/x86/kernel/mcount_64.S

···
 
 #ifdef CC_USING_FENTRY
 # define function_hook	__fentry__
+EXPORT_SYMBOL(__fentry__)
 #else
 # define function_hook	mcount
+EXPORT_SYMBOL(mcount)
 #endif
 
 /* All cases save the original rbp (8 bytes) */
···
 	jmp fgraph_trace
 END(function_hook)
 #endif /* CONFIG_DYNAMIC_FTRACE */
-EXPORT_SYMBOL(function_hook)
 #endif /* CONFIG_FUNCTION_TRACER */
 
 #ifdef CONFIG_FUNCTION_GRAPH_TRACER

arch/x86/kernel/quirks.c

···
 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_16H_NB_F3,
 			amd_disable_seq_and_redirect_scrub);
 
-#endif
-
 #if defined(CONFIG_X86_64) && defined(CONFIG_X86_MCE)
 #include <linux/jump_label.h>
 #include <asm/string_64.h>
···
 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x2fc0, quirk_intel_brickland_xeon_ras_cap);
 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x6fc0, quirk_intel_brickland_xeon_ras_cap);
 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x2083, quirk_intel_purley_xeon_ras_cap);
+#endif
 #endif

arch/x86/kernel/setup.c

···
 	 */
 	get_smp_config();
 
+	/*
+	 * Systems w/o ACPI and mptables might not have it mapped the local
+	 * APIC yet, but prefill_possible_map() might need to access it.
+	 */
+	init_apic_mappings();
+
 	prefill_possible_map();
 
 	init_cpu_to_node();
 
-	init_apic_mappings();
 	io_apic_init_mappings();
 
 	kvm_guest_init();

arch/x86/kernel/unwind_guess.c

···
 	get_stack_info(first_frame, state->task, &state->stack_info,
 		       &state->stack_mask);
 
-	if (!__kernel_text_address(*first_frame))
+	/*
+	 * The caller can provide the address of the first frame directly
+	 * (first_frame) or indirectly (regs->sp) to indicate which stack frame
+	 * to start unwinding at.  Skip ahead until we reach it.
+	 */
+	if (!unwind_done(state) &&
+	    (!on_stack(&state->stack_info, first_frame, sizeof(long)) ||
+	    !__kernel_text_address(*first_frame)))
 		unwind_next_frame(state);
 }
 EXPORT_SYMBOL_GPL(__unwind_start);

arch/x86/mm/kaslr.c

···
 	 * consistent with the vaddr_start/vaddr_end variables.
 	 */
 	BUILD_BUG_ON(vaddr_start >= vaddr_end);
-	BUILD_BUG_ON(config_enabled(CONFIG_X86_ESPFIX64) &&
+	BUILD_BUG_ON(IS_ENABLED(CONFIG_X86_ESPFIX64) &&
 		     vaddr_end >= EFI_VA_START);
-	BUILD_BUG_ON((config_enabled(CONFIG_X86_ESPFIX64) ||
-		      config_enabled(CONFIG_EFI)) &&
+	BUILD_BUG_ON((IS_ENABLED(CONFIG_X86_ESPFIX64) ||
+		      IS_ENABLED(CONFIG_EFI)) &&
 		     vaddr_end >= __START_KERNEL_map);
 	BUILD_BUG_ON(vaddr_end > __START_KERNEL_map);
 

arch/x86/mm/pat.c

···
 	free_memtype(start, end);
 }
 
+int arch_io_reserve_memtype_wc(resource_size_t start, resource_size_t size)
+{
+	enum page_cache_mode type = _PAGE_CACHE_MODE_WC;
+
+	return io_reserve_memtype(start, start + size, &type);
+}
+EXPORT_SYMBOL(arch_io_reserve_memtype_wc);
+
+void arch_io_free_memtype_wc(resource_size_t start, resource_size_t size)
+{
+	io_free_memtype(start, start + size);
+}
+EXPORT_SYMBOL(arch_io_free_memtype_wc);
+
 pgprot_t phys_mem_access_prot(struct file *file, unsigned long pfn,
 				unsigned long size, pgprot_t vma_prot)
 {

arch/x86/xen/enlighten.c

···
 
 	xen_domain_type = XEN_HVM_DOMAIN;
 }
+#endif
 
 static int xen_cpu_up_prepare(unsigned int cpu)
 {
···
 	return 0;
 }
 
+#ifdef CONFIG_XEN_PVHVM
 #ifdef CONFIG_KEXEC_CORE
 static void xen_hvm_shutdown(void)
 {

block/badblocks.c

···
 }
 EXPORT_SYMBOL_GPL(badblocks_check);
 
+static void badblocks_update_acked(struct badblocks *bb)
+{
+	u64 *p = bb->page;
+	int i;
+	bool unacked = false;
+
+	if (!bb->unacked_exist)
+		return;
+
+	for (i = 0; i < bb->count ; i++) {
+		if (!BB_ACK(p[i])) {
+			unacked = true;
+			break;
+		}
+	}
+
+	if (!unacked)
+		bb->unacked_exist = 0;
+}
+
 /**
  * badblocks_set() - Add a range of bad blocks to the table.
  * @bb:		the badblocks structure that holds all badblock information
···
 	bb->changed = 1;
 	if (!acknowledged)
 		bb->unacked_exist = 1;
+	else
+		badblocks_update_acked(bb);
 	write_sequnlock_irqrestore(&bb->lock, flags);
 
 	return rv;
···
 		}
 	}
 
+	badblocks_update_acked(bb);
 	bb->changed = 1;
 out:
 	write_sequnlock_irq(&bb->lock);

block/blk-flush.c

···
 	struct blk_flush_queue *fq = blk_get_flush_queue(q, NULL);
 
 	/*
+	 * Updating q->in_flight[] here for making this tag usable
+	 * early. Because in blk_queue_start_tag(),
+	 * q->in_flight[BLK_RW_ASYNC] is used to limit async I/O and
+	 * reserve tags for sync I/O.
+	 *
+	 * More importantly this way can avoid the following I/O
+	 * deadlock:
+	 *
+	 * - suppose there are 40 fua requests comming to flush queue
+	 *   and queue depth is 31
+	 * - 30 rqs are scheduled then blk_queue_start_tag() can't alloc
+	 *   tag for async I/O any more
+	 * - all the 30 rqs are completed before FLUSH_PENDING_TIMEOUT
+	 *   and flush_data_end_io() is called
+	 * - the other rqs still can't go ahead if not updating
+	 *   q->in_flight[BLK_RW_ASYNC] here, meantime these rqs
+	 *   are held in flush data queue and make no progress of
+	 *   handling post flush rq
+	 * - only after the post flush rq is handled, all these rqs
+	 *   can be completed
+	 */
+
+	elv_completed_request(q, rq);
+
+	/* for avoiding double accounting */
+	rq->cmd_flags &= ~REQ_STARTED;
+
+	/*
 	 * After populating an empty queue, kick it to avoid stall.  Read
 	 * the comment in flush_end_io().
 	 */

block/blk-mq.c

···
 	blk_mq_set_alloc_data(&alloc_data, q, 0, ctx, hctx);
 	rq = __blk_mq_alloc_request(&alloc_data, op, op_flags);
 
-	hctx->queued++;
-	data->hctx = hctx;
-	data->ctx = ctx;
+	data->hctx = alloc_data.hctx;
+	data->ctx = alloc_data.ctx;
+	data->hctx->queued++;
 	return rq;
 }
 

drivers/acpi/acpica/dsinit.c

···
 #include "acdispat.h"
 #include "acnamesp.h"
 #include "actables.h"
+#include "acinterp.h"
 
 #define _COMPONENT          ACPI_DISPATCHER
 ACPI_MODULE_NAME("dsinit")
···
 
 	/* Walk entire namespace from the supplied root */
 
-	status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
-	if (ACPI_FAILURE(status)) {
-		return_ACPI_STATUS(status);
-	}
-
 	/*
 	 * We don't use acpi_walk_namespace since we do not want to acquire
 	 * the namespace reader lock.
 	 */
 	status =
 	    acpi_ns_walk_namespace(ACPI_TYPE_ANY, start_node, ACPI_UINT32_MAX,
-				   ACPI_NS_WALK_UNLOCK, acpi_ds_init_one_object,
-				   NULL, &info, NULL);
+				   0, acpi_ds_init_one_object, NULL, &info,
+				   NULL);
 	if (ACPI_FAILURE(status)) {
 		ACPI_EXCEPTION((AE_INFO, status, "During WalkNamespace"));
 	}
-	(void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
 
 	status = acpi_get_table_by_index(table_index, &table);
 	if (ACPI_FAILURE(status)) {

drivers/acpi/acpica/dsmethod.c

···
 			  "Method auto-serialization parse [%4.4s] %p\n",
 			  acpi_ut_get_node_name(node), node));
 
-	acpi_ex_enter_interpreter();
-
 	/* Create/Init a root op for the method parse tree */
 
 	op = acpi_ps_alloc_op(AML_METHOD_OP, obj_desc->method.aml_start);
 	if (!op) {
-		status = AE_NO_MEMORY;
-		goto unlock;
+		return_ACPI_STATUS(AE_NO_MEMORY);
 	}
 
 	acpi_ps_set_name(op, node->name.integer);
···
 	    acpi_ds_create_walk_state(node->owner_id, NULL, NULL, NULL);
 	if (!walk_state) {
 		acpi_ps_free_op(op);
-		status = AE_NO_MEMORY;
-		goto unlock;
+		return_ACPI_STATUS(AE_NO_MEMORY);
 	}
 
 	status = acpi_ds_init_aml_walk(walk_state, op, node,
···
 	status = acpi_ps_parse_aml(walk_state);
 
 	acpi_ps_delete_parse_tree(op);
-unlock:
-	acpi_ex_exit_interpreter();
 	return_ACPI_STATUS(status);
 }
 
···
 		acpi_ds_method_data_delete_all(walk_state);
 
 		/*
-		 * If method is serialized, release the mutex and restore the
-		 * current sync level for this thread
-		 */
-		if (method_desc->method.mutex) {
-
-			/* Acquisition Depth handles recursive calls */
-
-			method_desc->method.mutex->mutex.acquisition_depth--;
-			if (!method_desc->method.mutex->mutex.acquisition_depth) {
-				walk_state->thread->current_sync_level =
-				    method_desc->method.mutex->mutex.
-				    original_sync_level;
-
-				acpi_os_release_mutex(method_desc->method.
-						      mutex->mutex.os_mutex);
-				method_desc->method.mutex->mutex.thread_id = 0;
-			}
-		}
-
-		/*
 		 * Delete any namespace objects created anywhere within the
 		 * namespace by the execution of this method. Unless:
 		 * 1) This method is a module-level executable code method, in which
···
 				(void)acpi_ex_enter_interpreter();
 				method_desc->method.info_flags &=
 				    ~ACPI_METHOD_MODIFIED_NAMESPACE;
+			}
+		}
+
+		/*
+		 * If method is serialized, release the mutex and restore the
+		 * current sync level for this thread
+		 */
+		if (method_desc->method.mutex) {
+
+			/* Acquisition Depth handles recursive calls */
+
+			method_desc->method.mutex->mutex.acquisition_depth--;
+			if (!method_desc->method.mutex->mutex.acquisition_depth) {
+				walk_state->thread->current_sync_level =
+				    method_desc->method.mutex->mutex.
+				    original_sync_level;
+
+				acpi_os_release_mutex(method_desc->method.
+						      mutex->mutex.os_mutex);
+				method_desc->method.mutex->mutex.thread_id = 0;
 			}
 		}
 	}

drivers/acpi/acpica/dswload2.c

···
 				}
 			}
 
-			acpi_ex_exit_interpreter();
 			status =
 			    acpi_ev_initialize_region
 			    (acpi_ns_get_attached_object(node), FALSE);
-			acpi_ex_enter_interpreter();
 
 			if (ACPI_FAILURE(status)) {
 				/*

drivers/acpi/acpica/evrgnini.c

···
 #include "accommon.h"
 #include "acevents.h"
 #include "acnamesp.h"
+#include "acinterp.h"
 
 #define _COMPONENT          ACPI_EVENTS
 ACPI_MODULE_NAME("evrgnini")
···
 					}
 				}
 
+				acpi_ex_exit_interpreter();
 				status =
 				    acpi_ev_execute_reg_method(region_obj,
 							       ACPI_REG_CONNECT);
+				acpi_ex_enter_interpreter();
 
 				if (acpi_ns_locked) {
 					status =

drivers/acpi/acpica/nsload.c

···
 	ACPI_DEBUG_PRINT((ACPI_DB_INFO,
 			  "**** Begin Table Object Initialization\n"));
 
+	acpi_ex_enter_interpreter();
 	status = acpi_ds_initialize_objects(table_index, node);
+	acpi_ex_exit_interpreter();
 
 	ACPI_DEBUG_PRINT((ACPI_DB_INFO,
 			  "**** Completed Table Object Initialization\n"));

drivers/acpi/apei/ghes.c

···
 	ghes_do_proc(ghes, ghes->estatus);
 out:
 	ghes_clear_estatus(ghes);
-	return 0;
+	return rc;
 }
 
 static void ghes_add_timer(struct ghes *ghes)

drivers/acpi/pci_link.c

···
 
 static LIST_HEAD(acpi_link_list);
 static DEFINE_MUTEX(acpi_link_lock);
+static int sci_irq = -1, sci_penalty;
 
 /* --------------------------------------------------------------------------
                             PCI Link Device Management
···
 {
 	int penalty = 0;
 
-	/*
-	* Penalize IRQ used by ACPI SCI. If ACPI SCI pin attributes conflict
-	* with PCI IRQ attributes, mark ACPI SCI as ISA_ALWAYS so it won't be
-	* use for PCI IRQs.
-	*/
-	if (irq == acpi_gbl_FADT.sci_interrupt) {
-		u32 type = irq_get_trigger_type(irq) & IRQ_TYPE_SENSE_MASK;
-
-		if (type != IRQ_TYPE_LEVEL_LOW)
-			penalty += PIRQ_PENALTY_ISA_ALWAYS;
-		else
-			penalty += PIRQ_PENALTY_PCI_USING;
-	}
+	if (irq == sci_irq)
+		penalty += sci_penalty;
 
 	if (irq < ACPI_MAX_ISA_IRQS)
 		return penalty + acpi_isa_irq_penalty[irq];
 
-	penalty += acpi_irq_pci_sharing_penalty(irq);
-	return penalty;
+	return penalty + acpi_irq_pci_sharing_penalty(irq);
 }
 
 int __init acpi_irq_penalty_init(void)
···
 			    acpi_device_bid(link->device));
 		return -ENODEV;
 	} else {
+		if (link->irq.active < ACPI_MAX_ISA_IRQS)
+			acpi_isa_irq_penalty[link->irq.active] +=
+				PIRQ_PENALTY_PCI_USING;
+
 		printk(KERN_WARNING PREFIX "%s [%s] enabled at IRQ %d\n",
 		       acpi_device_name(link->device),
 		       acpi_device_bid(link->device), link->irq.active);
···
 			continue;
 
 		if (used)
-			new_penalty = acpi_irq_get_penalty(irq) +
+			new_penalty = acpi_isa_irq_penalty[irq] +
 					PIRQ_PENALTY_ISA_USED;
 		else
 			new_penalty = 0;
···
 void acpi_penalize_isa_irq(int irq, int active)
 {
 	if ((irq >= 0) && (irq < ARRAY_SIZE(acpi_isa_irq_penalty)))
-		acpi_isa_irq_penalty[irq] = acpi_irq_get_penalty(irq) +
+		acpi_isa_irq_penalty[irq] +=
 		  (active ? PIRQ_PENALTY_ISA_USED : PIRQ_PENALTY_PCI_USING);
 }
 
···
 {
 	return irq >= 0 && (irq >= ARRAY_SIZE(acpi_isa_irq_penalty) ||
 		    acpi_irq_get_penalty(irq) < PIRQ_PENALTY_ISA_ALWAYS);
+}
+
+void acpi_penalize_sci_irq(int irq, int trigger, int polarity)
+{
+	sci_irq = irq;
+
+	if (trigger == ACPI_MADT_TRIGGER_LEVEL &&
+	    polarity == ACPI_MADT_POLARITY_ACTIVE_LOW)
+		sci_penalty = PIRQ_PENALTY_PCI_USING;
+	else
+		sci_penalty = PIRQ_PENALTY_ISA_ALWAYS;
 }
 
 /*

drivers/android/binder.c

···
 
 
 static struct binder_ref *binder_get_ref(struct binder_proc *proc,
-					 uint32_t desc)
+					 u32 desc, bool need_strong_ref)
 {
 	struct rb_node *n = proc->refs_by_desc.rb_node;
 	struct binder_ref *ref;
···
 	while (n) {
 		ref = rb_entry(n, struct binder_ref, rb_node_desc);
 
-		if (desc < ref->desc)
+		if (desc < ref->desc) {
 			n = n->rb_left;
-		else if (desc > ref->desc)
+		} else if (desc > ref->desc) {
 			n = n->rb_right;
-		else
+		} else if (need_strong_ref && !ref->strong) {
+			binder_user_error("tried to use weak ref as strong ref\n");
+			return NULL;
+		} else {
 			return ref;
+		}
 	}
 	return NULL;
 }
···
 		} break;
 		case BINDER_TYPE_HANDLE:
 		case BINDER_TYPE_WEAK_HANDLE: {
-			struct binder_ref *ref = binder_get_ref(proc, fp->handle);
+			struct binder_ref *ref;
+
+			ref = binder_get_ref(proc, fp->handle,
+					     fp->type == BINDER_TYPE_HANDLE);
 
 			if (ref == NULL) {
 				pr_err("transaction release %d bad handle %d\n",
···
 		if (tr->target.handle) {
 			struct binder_ref *ref;
 
-			ref = binder_get_ref(proc, tr->target.handle);
+			ref = binder_get_ref(proc, tr->target.handle, true);
 			if (ref == NULL) {
 				binder_user_error("%d:%d got transaction to invalid handle\n",
 					proc->pid, thread->pid);
···
 				fp->type = BINDER_TYPE_HANDLE;
 			else
 				fp->type = BINDER_TYPE_WEAK_HANDLE;
+			fp->binder = 0;
 			fp->handle = ref->desc;
+			fp->cookie = 0;
 			binder_inc_ref(ref, fp->type == BINDER_TYPE_HANDLE,
 				       &thread->todo);
 
···
 		} break;
 		case BINDER_TYPE_HANDLE:
 		case BINDER_TYPE_WEAK_HANDLE: {
-			struct binder_ref *ref = binder_get_ref(proc, fp->handle);
+			struct binder_ref *ref;
+
+			ref = binder_get_ref(proc, fp->handle,
+					     fp->type == BINDER_TYPE_HANDLE);
 
 			if (ref == NULL) {
 				binder_user_error("%d:%d got transaction with invalid handle, %d\n",
···
 					return_error = BR_FAILED_REPLY;
 					goto err_binder_get_ref_for_node_failed;
 				}
+				fp->binder = 0;
 				fp->handle = new_ref->desc;
+				fp->cookie = 0;
 				binder_inc_ref(new_ref, fp->type == BINDER_TYPE_HANDLE, NULL);
 				trace_binder_transaction_ref_to_ref(t, ref,
 								    new_ref);
···
 			binder_debug(BINDER_DEBUG_TRANSACTION,
 				     "        fd %d -> %d\n", fp->handle, target_fd);
 			/* TODO: fput? */
+			fp->binder = 0;
 			fp->handle = target_fd;
 		} break;
 
···
 						ref->desc);
 				}
 			} else
-				ref = binder_get_ref(proc, target);
+				ref = binder_get_ref(proc, target,
+						     cmd == BC_ACQUIRE ||
+						     cmd == BC_RELEASE);
 			if (ref == NULL) {
 				binder_user_error("%d:%d refcount change on invalid ref %d\n",
 					proc->pid, thread->pid, target);
···
 			if (get_user(cookie, (binder_uintptr_t __user *)ptr))
 				return -EFAULT;
 			ptr += sizeof(binder_uintptr_t);
-			ref = binder_get_ref(proc, target);
+			ref = binder_get_ref(proc, target, false);
 			if (ref == NULL) {
 				binder_user_error("%d:%d %s invalid ref %d\n",
 					proc->pid, thread->pid,

drivers/ata/ahci.c

···
 	 * Message mode could be enforced. In this case assume that advantage
 	 * of multipe MSIs is negated and use single MSI mode instead.
 	 */
-	nvec = pci_alloc_irq_vectors(pdev, n_ports, INT_MAX,
-			PCI_IRQ_MSIX | PCI_IRQ_MSI);
-	if (nvec > 0) {
-		if (!(readl(hpriv->mmio + HOST_CTL) & HOST_MRSM)) {
-			hpriv->get_irq_vector = ahci_get_irq_vector;
-			hpriv->flags |= AHCI_HFLAG_MULTI_MSI;
-			return nvec;
+	if (n_ports > 1) {
+		nvec = pci_alloc_irq_vectors(pdev, n_ports, INT_MAX,
+				PCI_IRQ_MSIX | PCI_IRQ_MSI);
+		if (nvec > 0) {
+			if (!(readl(hpriv->mmio + HOST_CTL) & HOST_MRSM)) {
+				hpriv->get_irq_vector = ahci_get_irq_vector;
+				hpriv->flags |= AHCI_HFLAG_MULTI_MSI;
+				return nvec;
+			}
+
+			/*
+			 * Fallback to single MSI mode if the controller
+			 * enforced MRSM mode.
+			 */
+			printk(KERN_INFO
+				"ahci: MRSM is on, fallback to single MSI\n");
+			pci_free_irq_vectors(pdev);
 		}
 
 		/*
-		 * Fallback to single MSI mode if the controller enforced MRSM
-		 * mode.
+		 * -ENOSPC indicated we don't have enough vectors.  Don't bother
+		 * trying a single vectors for any other error:
 		 */
-		printk(KERN_INFO "ahci: MRSM is on, fallback to single MSI\n");
-		pci_free_irq_vectors(pdev);
+		if (nvec < 0 && nvec != -ENOSPC)
+			return nvec;
 	}
-
-	/*
-	 * -ENOSPC indicated we don't have enough vectors.  Don't bother trying
-	 * a single vectors for any other error:
-	 */
-	if (nvec < 0 && nvec != -ENOSPC)
-		return nvec;
 
 	/*
 	 * If the host is not capable of supporting per-port vectors, fall
···
 		/* legacy intx interrupts */
 		pci_intx(pdev, 1);
 	}
-	hpriv->irq = pdev->irq;
+	hpriv->irq = pci_irq_vector(pdev, 0);
 
 	if (!(hpriv->cap & HOST_CAP_SSS) || ahci_ignore_sss)
 		host->flags |= ATA_HOST_PARALLEL_SCAN;

drivers/base/Kconfig

···
 	  If you are unsure about this, Say N here.
 
 config DEBUG_TEST_DRIVER_REMOVE
-	bool "Test driver remove calls during probe"
+	bool "Test driver remove calls during probe (UNSTABLE)"
 	depends on DEBUG_KERNEL
 	help
 	  Say Y here if you want the Driver core to test driver remove functions
 	  by calling probe, remove, probe. This tests the remove path without
 	  having to unbind the driver or unload the driver module.
 
-	  If you are unsure about this, say N here.
+	  This option is expected to find errors and may render your system
+	  unusable. You should say N here unless you are explicitly looking to
+	  test this functionality.
 
 config SYS_HYPERVISOR
 	bool

drivers/block/DAC960.c

···
 	case DAC960_PD_Controller:
 	  if (!request_region(Controller->IO_Address, 0x80,
 			      Controller->FullModelName)) {
-		DAC960_Error("IO port 0x%d busy for Controller at\n",
+		DAC960_Error("IO port 0x%lx busy for Controller at\n",
 			     Controller, Controller->IO_Address);
 		goto Failure;
 	  }
···
 	case DAC960_P_Controller:
 	  if (!request_region(Controller->IO_Address, 0x80,
 			      Controller->FullModelName)){
-		DAC960_Error("IO port 0x%d busy for Controller at\n",
+		DAC960_Error("IO port 0x%lx busy for Controller at\n",
 		   	     Controller, Controller->IO_Address);
 		goto Failure;
 	  }

drivers/block/nbd.c

···
 	spin_lock(&nbd->sock_lock);
 
 	if (!nbd->sock) {
-		spin_unlock_irq(&nbd->sock_lock);
+		spin_unlock(&nbd->sock_lock);
 		return;
 	}
 

drivers/bus/Kconfig

···
 config QCOM_EBI2
 	bool "Qualcomm External Bus Interface 2 (EBI2)"
 	depends on HAS_IOMEM
+	depends on ARCH_QCOM || COMPILE_TEST
 	help
 	  Say y here to enable support for the Qualcomm External Bus
 	  Interface 2, which can be used to connect things like NAND Flash,

drivers/char/hw_random/core.c

···
 
 static void add_early_randomness(struct hwrng *rng)
 {
-	unsigned char bytes[16];
 	int bytes_read;
+	size_t size = min_t(size_t, 16, rng_buffer_size());
 
 	mutex_lock(&reading_mutex);
-	bytes_read = rng_get_data(rng, bytes, sizeof(bytes), 1);
+	bytes_read = rng_get_data(rng, rng_buffer, size, 1);
 	mutex_unlock(&reading_mutex);
 	if (bytes_read > 0)
-		add_device_randomness(bytes, bytes_read);
+		add_device_randomness(rng_buffer, bytes_read);
 }
 
 static inline void cleanup_rng(struct kref *kref)

drivers/clk/at91/clk-programmable.c

···
 	ret = clk_hw_register(NULL, &prog->hw);
 	if (ret) {
 		kfree(prog);
-		hw = &prog->hw;
+		hw = ERR_PTR(ret);
 	}
 
 	return hw;

drivers/clk/bcm/clk-bcm2835.c

···
 static long bcm2835_pll_round_rate(struct clk_hw *hw, unsigned long rate,
 				   unsigned long *parent_rate)
 {
+	struct bcm2835_pll *pll = container_of(hw, struct bcm2835_pll, hw);
+	const struct bcm2835_pll_data *data = pll->data;
 	u32 ndiv, fdiv;
+
+	rate = clamp(rate, data->min_rate, data->max_rate);
 
 	bcm2835_pll_choose_ndiv_and_fdiv(rate, *parent_rate, &ndiv, &fdiv);
 
···
 	u32 ndiv, fdiv, a2w_ctl;
 	u32 ana[4];
 	int i;
-
-	if (rate < data->min_rate || rate > data->max_rate) {
-		dev_err(cprman->dev, "%s: rate out of spec: %lu vs (%lu, %lu)\n",
-			clk_hw_get_name(hw), rate,
-			data->min_rate, data->max_rate);
-		return -EINVAL;
-	}
 
 	if (rate > data->max_fb_rate) {
 		use_fb_prediv = true;

drivers/clk/clk-max77686.c

···
 		return -EINVAL;
 	}
 
+	drv_data->num_clks = num_clks;
 	drv_data->max_clk_data = devm_kcalloc(dev, num_clks,
 					      sizeof(*drv_data->max_clk_data),
 					      GFP_KERNEL);

drivers/clk/hisilicon/clk-hi6220.c

···
 	hi6220_clk_register_divider(hi6220_div_clks_sys,
 			ARRAY_SIZE(hi6220_div_clks_sys), clk_data);
 }
-CLK_OF_DECLARE(hi6220_clk_sys, "hisilicon,hi6220-sysctrl", hi6220_clk_sys_init);
+CLK_OF_DECLARE_DRIVER(hi6220_clk_sys, "hisilicon,hi6220-sysctrl", hi6220_clk_sys_init);
 
 
 /* clocks in media controller */
···
 	hi6220_clk_register_divider(hi6220_div_clks_media,
 				ARRAY_SIZE(hi6220_div_clks_media), clk_data);
 }
-CLK_OF_DECLARE(hi6220_clk_media, "hisilicon,hi6220-mediactrl", hi6220_clk_media_init);
+CLK_OF_DECLARE_DRIVER(hi6220_clk_media, "hisilicon,hi6220-mediactrl", hi6220_clk_media_init);
 
 
 /* clocks in pmctrl */

drivers/clk/mediatek/Kconfig

···
 
 config COMMON_CLK_MT8135
 	bool "Clock driver for Mediatek MT8135"
+	depends on ARCH_MEDIATEK || COMPILE_TEST
 	select COMMON_CLK_MEDIATEK
 	default ARCH_MEDIATEK
 	---help---
···
 
 config COMMON_CLK_MT8173
 	bool "Clock driver for Mediatek MT8173"
+	depends on ARCH_MEDIATEK || COMPILE_TEST
 	select COMMON_CLK_MEDIATEK
 	default ARCH_MEDIATEK
 	---help---

drivers/clk/mvebu/armada-37xx-periph.c

···
 };
 static int armada_3700_add_composite_clk(const struct clk_periph_data *data,
 					 void __iomem *reg, spinlock_t *lock,
-					 struct device *dev, struct clk_hw *hw)
+					 struct device *dev, struct clk_hw **hw)
 {
 	const struct clk_ops *mux_ops = NULL, *gate_ops = NULL,
 		*rate_ops = NULL;
···
 		gate->lock = lock;
 		gate_ops = gate_hw->init->ops;
 		gate->reg = reg + (u64)gate->reg;
+		gate->flags = CLK_GATE_SET_TO_DISABLE;
 	}
 
 	if (data->rate_hw) {
···
 		}
 	}
 
-	hw = clk_hw_register_composite(dev, data->name, data->parent_names,
+	*hw = clk_hw_register_composite(dev, data->name, data->parent_names,
 				       data->num_parents, mux_hw,
 				       mux_ops, rate_hw, rate_ops,
 				       gate_hw, gate_ops, CLK_IGNORE_UNUSED);
 
-	if (IS_ERR(hw))
-		return PTR_ERR(hw);
+	if (IS_ERR(*hw))
+		return PTR_ERR(*hw);
 
 	return 0;
 }
···
 	spin_lock_init(&driver_data->lock);
 
 	for (i = 0; i < num_periph; i++) {
-		struct clk_hw *hw = driver_data->hw_data->hws[i];
+		struct clk_hw **hw = &driver_data->hw_data->hws[i];
 
 		if (armada_3700_add_composite_clk(&data[i], reg,
 						  &driver_data->lock, dev, hw))

drivers/clk/samsung/clk-exynos-audss.c

···
 	},
 	{ },
 };
+MODULE_DEVICE_TABLE(of, exynos_audss_clk_of_match);
 
 static void exynos_audss_clk_teardown(void)
 {

drivers/clk/uniphier/clk-uniphier-core.c

···
 	hw_data->num = clk_num;
 
 	/* avoid returning NULL for unused idx */
-	for (; clk_num >= 0; clk_num--)
+	while (--clk_num >= 0)
 		hw_data->hws[clk_num] = ERR_PTR(-EINVAL);
 
 	for (p = data; p->name; p++) {
···
 static const struct of_device_id uniphier_clk_match[] = {
 	/* System clock */
 	{
+		.compatible = "socionext,uniphier-sld3-clock",
+		.data = uniphier_sld3_sys_clk_data,
+	},
+	{
 		.compatible = "socionext,uniphier-ld4-clock",
 		.data = uniphier_ld4_sys_clk_data,
 	},
···
 		.compatible = "socionext,uniphier-ld20-clock",
 		.data = uniphier_ld20_sys_clk_data,
 	},
-	/* Media I/O clock */
+	/* Media I/O clock, SD clock */
 	{
 		.compatible = "socionext,uniphier-sld3-mio-clock",
 		.data = uniphier_sld3_mio_clk_data,
···
 		.data = uniphier_sld3_mio_clk_data,
 	},
 	{
-		.compatible = "socionext,uniphier-pro5-mio-clock",
-		.data = uniphier_pro5_mio_clk_data,
+		.compatible = "socionext,uniphier-pro5-sd-clock",
+		.data = uniphier_pro5_sd_clk_data,
 	},
 	{
-		.compatible = "socionext,uniphier-pxs2-mio-clock",
-		.data = uniphier_pro5_mio_clk_data,
+		.compatible = "socionext,uniphier-pxs2-sd-clock",
+		.data = uniphier_pro5_sd_clk_data,
 	},
 	{
 		.compatible = "socionext,uniphier-ld11-mio-clock",
 		.data = uniphier_sld3_mio_clk_data,
 	},
 	{
-		.compatible = "socionext,uniphier-ld20-mio-clock",
-		.data = uniphier_pro5_mio_clk_data,
+		.compatible = "socionext,uniphier-ld20-sd-clock",
+		.data = uniphier_pro5_sd_clk_data,
 	},
 	/* Peripheral clock */
 	{

drivers/clk/uniphier/clk-uniphier-mio.c

···
 	{ /* sentinel */ }
 };
 
-const struct uniphier_clk_data uniphier_pro5_mio_clk_data[] = {
+const struct uniphier_clk_data uniphier_pro5_sd_clk_data[] = {
 	UNIPHIER_MIO_CLK_SD_FIXED,
 	UNIPHIER_MIO_CLK_SD(0, 0),
 	UNIPHIER_MIO_CLK_SD(1, 1),

drivers/clk/uniphier/clk-uniphier-mux.c

···
 	struct uniphier_clk_mux *mux = to_uniphier_clk_mux(hw);
 	int num_parents = clk_hw_get_num_parents(hw);
 	int ret;
-	u32 val;
+	unsigned int val;
 	u8 i;
 
 	ret = regmap_read(mux->regmap, mux->reg, &val);

drivers/clk/uniphier/clk-uniphier.h

···
 extern const struct uniphier_clk_data uniphier_ld11_sys_clk_data[];
 extern const struct uniphier_clk_data uniphier_ld20_sys_clk_data[];
 extern const struct uniphier_clk_data uniphier_sld3_mio_clk_data[];
-extern const struct uniphier_clk_data uniphier_pro5_mio_clk_data[];
+extern const struct uniphier_clk_data uniphier_pro5_sd_clk_data[];
 extern const struct uniphier_clk_data uniphier_ld4_peri_clk_data[];
 extern const struct uniphier_clk_data uniphier_pro4_peri_clk_data[];
 

drivers/cpufreq/intel_pstate.c

···
 /**
  * struct cpudata -	Per CPU instance data storage
  * @cpu:		CPU number for this instance data
+ * @policy:		CPUFreq policy value
  * @update_util:	CPUFreq utility callback information
  * @update_util_set:	CPUFreq utility callback is set
  * @iowait_boost:	iowait-related boost fraction
···
 struct cpudata {
 	int cpu;
 
+	unsigned int policy;
 	struct update_util_data update_util;
 	bool   update_util_set;
 
···
 	*min = clamp_t(int, min_perf, cpu->pstate.min_pstate, max_perf);
 }
 
-static void intel_pstate_set_min_pstate(struct cpudata *cpu)
+static void intel_pstate_set_pstate(struct cpudata *cpu, int pstate)
 {
-	int pstate = cpu->pstate.min_pstate;
-
 	trace_cpu_frequency(pstate * cpu->pstate.scaling, cpu->cpu);
 	cpu->pstate.current_pstate = pstate;
 	/*
···
 	 */
 	wrmsrl_on_cpu(cpu->cpu, MSR_IA32_PERF_CTL,
 		      pstate_funcs.get_val(cpu, pstate));
+}
+
+static void intel_pstate_set_min_pstate(struct cpudata *cpu)
+{
+	intel_pstate_set_pstate(cpu, cpu->pstate.min_pstate);
+}
+
+static void intel_pstate_max_within_limits(struct cpudata *cpu)
+{
+	int min_pstate, max_pstate;
+
+	update_turbo_state();
+	intel_pstate_get_min_max(cpu, &min_pstate, &max_pstate);
+	intel_pstate_set_pstate(cpu, max_pstate);
 }
 
 static void intel_pstate_get_cpu_pstates(struct cpudata *cpu)
···
 
 	from = cpu->pstate.current_pstate;
 
-	target_pstate = pstate_funcs.get_target_pstate(cpu);
+	target_pstate = cpu->policy == CPUFREQ_POLICY_PERFORMANCE ?
+		cpu->pstate.turbo_pstate : pstate_funcs.get_target_pstate(cpu);
 
 	intel_pstate_update_pstate(cpu, target_pstate);
 
···
 	pr_debug("set_policy cpuinfo.max %u policy->max %u\n",
 		 policy->cpuinfo.max_freq, policy->max);
 
-	cpu = all_cpu_data[0];
+	cpu = all_cpu_data[policy->cpu];
+	cpu->policy = policy->policy;
+
 	if (cpu->pstate.max_pstate_physical > cpu->pstate.max_pstate &&
 	    policy->max < policy->cpuinfo.max_freq &&
 	    policy->max > cpu->pstate.max_pstate * cpu->pstate.scaling) {
···
 		policy->max = policy->cpuinfo.max_freq;
 	}
 
-	if (policy->policy == CPUFREQ_POLICY_PERFORMANCE) {
+	if (cpu->policy == CPUFREQ_POLICY_PERFORMANCE) {
 		limits = &performance_limits;
 		if (policy->max >= policy->cpuinfo.max_freq) {
 			pr_debug("set performance\n");
···
 	limits->max_perf = round_up(limits->max_perf, FRAC_BITS);
 
  out:
+	if (cpu->policy == CPUFREQ_POLICY_PERFORMANCE) {
+		/*
+		 * NOHZ_FULL CPUs need this as the governor callback may not
+		 * be invoked on them.
+		 */
+		intel_pstate_clear_update_util_hook(policy->cpu);
+		intel_pstate_max_within_limits(cpu);
+	}
+
 	intel_pstate_set_update_util_hook(policy->cpu);
 
 	intel_pstate_hwp_set_policy(policy);

drivers/dax/Kconfig

···
 
 config DEV_DAX_PMEM
 	tristate "PMEM DAX: direct access to persistent memory"
-	depends on NVDIMM_DAX
+	depends on LIBNVDIMM && NVDIMM_DAX
 	default DEV_DAX
 	help
 	  Support raw access to persistent memory.  Note that this

drivers/dax/pmem.c

···
 
 	dev_dbg(dax_pmem->dev, "%s\n", __func__);
 	percpu_ref_exit(ref);
-	wait_for_completion(&dax_pmem->cmp);
 }
 
 static void dax_pmem_percpu_kill(void *data)
···
 
 	dev_dbg(dax_pmem->dev, "%s\n", __func__);
 	percpu_ref_kill(ref);
+	wait_for_completion(&dax_pmem->cmp);
 }
 
 static int dax_pmem_probe(struct device *dev)

drivers/extcon/extcon-qcom-spmi-misc.c

···
 	if (ret)
 		return;
 
-	extcon_set_state(info->edev, EXTCON_USB_HOST, !id);
+	extcon_set_state_sync(info->edev, EXTCON_USB_HOST, !id);
 }
 
 static irqreturn_t qcom_usb_irq_handler(int irq, void *dev_id)

drivers/gpio/Kconfig

···
 
 config GPIO_MOCKUP
 	tristate "GPIO Testing Driver"
-	depends on GPIOLIB
+	depends on GPIOLIB && SYSFS
 	select GPIO_SYSFS
 	help
 	  This enables GPIO Testing driver, which provides a way to test GPIO

drivers/gpio/gpio-ath79.c

···
 	{ .compatible = "qca,ar9340-gpio" },
 	{},
 };
+MODULE_DEVICE_TABLE(of, ath79_gpio_of_match);
 
 static int ath79_gpio_probe(struct platform_device *pdev)
 {

drivers/gpio/gpio-mpc8xxx.c

···
 				irq_hw_number_t hwirq)
 {
 	irq_set_chip_data(irq, h->host_data);
-	irq_set_chip_and_handler(irq, &mpc8xxx_irq_chip, handle_level_irq);
+	irq_set_chip_and_handler(irq, &mpc8xxx_irq_chip, handle_edge_irq);
 
 	return 0;
 }

drivers/gpio/gpio-mxs.c

···
 	writel(~0U, port->base + PINCTRL_IRQSTAT(port) + MXS_CLR);
 
 	irq_base = irq_alloc_descs(-1, 0, 32, numa_node_id());
-	if (irq_base < 0)
-		return irq_base;
+	if (irq_base < 0) {
+		err = irq_base;
+		goto out_iounmap;
+	}
 
 	port->domain = irq_domain_add_legacy(np, 32, irq_base, 0,
 					     &irq_domain_simple_ops, NULL);
···
 	irq_domain_remove(port->domain);
 out_irqdesc_free:
 	irq_free_descs(irq_base, 32);
+out_iounmap:
+	iounmap(port->base);
 	return err;
 }
 

drivers/gpio/gpio-stmpe.c

···
 		 * 801/1801/1600, bits are cleared when read.
 		 * Edge detect register is not present on 801/1600/1801
 		 */
-		if (stmpe->partnum != STMPE801 || stmpe->partnum != STMPE1600 ||
+		if (stmpe->partnum != STMPE801 && stmpe->partnum != STMPE1600 &&
 		    stmpe->partnum != STMPE1801) {
 			stmpe_reg_write(stmpe, statmsbreg + i, status[i]);
 			stmpe_reg_write(stmpe,

drivers/gpio/gpio-ts4800.c

···
 	{ .compatible = "technologic,ts4800-gpio", },
 	{},
 };
+MODULE_DEVICE_TABLE(of, ts4800_gpio_of_match);
 
 static struct platform_driver ts4800_gpio_driver = {
 	.driver = {

drivers/gpio/gpiolib-acpi.c

···
 {
 	int idx, i;
 	unsigned int irq_flags;
+	int ret = -ENOENT;
 
 	for (i = 0, idx = 0; idx <= index; i++) {
 		struct acpi_gpio_info info;
 		struct gpio_desc *desc;
 
 		desc = acpi_get_gpiod_by_index(adev, NULL, i, &info);
-		if (IS_ERR(desc))
+		if (IS_ERR(desc)) {
+			ret = PTR_ERR(desc);
 			break;
+		}
 		if (info.gpioint && idx++ == index) {
 			int irq = gpiod_to_irq(desc);
 
···
 		}
 
 	}
-	return -ENOENT;
+	return ret;
 }
 EXPORT_SYMBOL_GPL(acpi_dev_gpio_irq_get);
 

drivers/gpio/gpiolib.c

···
 	u32 numdescs;
 };
 
+#define GPIOHANDLE_REQUEST_VALID_FLAGS \
+	(GPIOHANDLE_REQUEST_INPUT | \
+	GPIOHANDLE_REQUEST_OUTPUT | \
+	GPIOHANDLE_REQUEST_ACTIVE_LOW | \
+	GPIOHANDLE_REQUEST_OPEN_DRAIN | \
+	GPIOHANDLE_REQUEST_OPEN_SOURCE)
+
 static long linehandle_ioctl(struct file *filep, unsigned int cmd,
 			     unsigned long arg)
 {
···
 
 	if (cmd == GPIOHANDLE_GET_LINE_VALUES_IOCTL) {
 		int val;
+
+		memset(&ghd, 0, sizeof(ghd));
 
 		/* TODO: check if descriptors are really input */
 		for (i = 0; i < lh->numdescs; i++) {
···
 		u32 lflags = handlereq.flags;
 		struct gpio_desc *desc;
 
+		if (offset >= gdev->ngpio) {
+			ret = -EINVAL;
+			goto out_free_descs;
+		}
+
+		/* Return an error if a unknown flag is set */
+		if (lflags & ~GPIOHANDLE_REQUEST_VALID_FLAGS) {
+			ret = -EINVAL;
+			goto out_free_descs;
+		}
+
 		desc = &gdev->descs[offset];
 		ret = gpiod_request(desc, lh->label);
 		if (ret)
···
 	struct mutex read_lock;
 };
 
+#define GPIOEVENT_REQUEST_VALID_FLAGS \
+	(GPIOEVENT_REQUEST_RISING_EDGE | \
+	GPIOEVENT_REQUEST_FALLING_EDGE)
+
 static unsigned int lineevent_poll(struct file *filep,
 				   struct poll_table_struct *wait)
 {
···
 	 */
 	if (cmd == GPIOHANDLE_GET_LINE_VALUES_IOCTL) {
 		int val;
+
+		memset(&ghd, 0, sizeof(ghd));
 
 		val = gpiod_get_value_cansleep(le->desc);
 		if (val < 0)
···
 	lflags = eventreq.handleflags;
 	eflags = eventreq.eventflags;
 
+	if (offset >= gdev->ngpio) {
+		ret = -EINVAL;
+		goto out_free_label;
+	}
+
+	/* Return an error if a unknown flag is set */
+	if ((lflags & ~GPIOHANDLE_REQUEST_VALID_FLAGS) ||
+	    (eflags & ~GPIOEVENT_REQUEST_VALID_FLAGS)) {
+		ret = -EINVAL;
+		goto out_free_label;
+	}
+
 	/* This is just wrong: we don't look for events on output lines */
 	if (lflags & GPIOHANDLE_REQUEST_OUTPUT) {
 		ret = -EINVAL;
···
 	if (cmd == GPIO_GET_CHIPINFO_IOCTL) {
 		struct gpiochip_info chipinfo;
 
+		memset(&chipinfo, 0, sizeof(chipinfo));
+
 		strncpy(chipinfo.name, dev_name(&gdev->dev),
 			sizeof(chipinfo.name));
 		chipinfo.name[sizeof(chipinfo.name)-1] = '\0';
···
 
 		if (copy_from_user(&lineinfo, ip, sizeof(lineinfo)))
 			return -EFAULT;
-		if (lineinfo.line_offset > gdev->ngpio)
+		if (lineinfo.line_offset >= gdev->ngpio)
 			return -EINVAL;
 
 		desc = &gdev->descs[lineinfo.line_offset];

drivers/gpu/drm/amd/amdgpu/amdgpu_object.c

···
 
 int amdgpu_bo_init(struct amdgpu_device *adev)
 {
+	/* reserve PAT memory space to WC for VRAM */
+	arch_io_reserve_memtype_wc(adev->mc.aper_base,
+				   adev->mc.aper_size);
+
 	/* Add an MTRR for the VRAM */
 	adev->mc.vram_mtrr = arch_phys_wc_add(adev->mc.aper_base,
 					      adev->mc.aper_size);
···
 {
 	amdgpu_ttm_fini(adev);
 	arch_phys_wc_del(adev->mc.vram_mtrr);
+	arch_io_free_memtype_wc(adev->mc.aper_base, adev->mc.aper_size);
 }
 
 int amdgpu_bo_fbdev_mmap(struct amdgpu_bo *bo,

drivers/gpu/drm/ast/ast_ttm.c

···
 		return ret;
 	}
 
+	arch_io_reserve_memtype_wc(pci_resource_start(dev->pdev, 0),
+				   pci_resource_len(dev->pdev, 0));
 	ast->fb_mtrr = arch_phys_wc_add(pci_resource_start(dev->pdev, 0),
 					pci_resource_len(dev->pdev, 0));
 
···
 
 void ast_mm_fini(struct ast_private *ast)
 {
+	struct drm_device *dev = ast->dev;
+
 	ttm_bo_device_release(&ast->ttm.bdev);
 
 	ast_ttm_global_release(ast);
 
 	arch_phys_wc_del(ast->fb_mtrr);
+	arch_io_free_memtype_wc(pci_resource_start(dev->pdev, 0),
+				pci_resource_len(dev->pdev, 0));
 }
 
 void ast_ttm_placement(struct ast_bo *bo, int domain)

drivers/gpu/drm/cirrus/cirrus_ttm.c

···
 		return ret;
 	}
 
+	arch_io_reserve_memtype_wc(pci_resource_start(dev->pdev, 0),
+				   pci_resource_len(dev->pdev, 0));
+
 	cirrus->fb_mtrr = arch_phys_wc_add(pci_resource_start(dev->pdev, 0),
 					   pci_resource_len(dev->pdev, 0));
 
···
 
 void cirrus_mm_fini(struct cirrus_device *cirrus)
 {
+	struct drm_device *dev = cirrus->dev;
+
 	if (!cirrus->mm_inited)
 		return;
 
···
 
 	arch_phys_wc_del(cirrus->fb_mtrr);
 	cirrus->fb_mtrr = 0;
+	arch_io_free_memtype_wc(pci_resource_start(dev->pdev, 0),
+				pci_resource_len(dev->pdev, 0));
 }
 
 void cirrus_ttm_placement(struct cirrus_bo *bo, int domain)

drivers/gpu/drm/mgag200/mgag200_ttm.c

···
 		return ret;
 	}
 
+	arch_io_reserve_memtype_wc(pci_resource_start(dev->pdev, 0),
+				   pci_resource_len(dev->pdev, 0));
+
 	mdev->fb_mtrr = arch_phys_wc_add(pci_resource_start(dev->pdev, 0),
 					 pci_resource_len(dev->pdev, 0));
 
···
 
 void mgag200_mm_fini(struct mga_device *mdev)
 {
+	struct drm_device *dev = mdev->dev;
+
 	ttm_bo_device_release(&mdev->ttm.bdev);
 
 	mgag200_ttm_global_release(mdev);
 
+	arch_io_free_memtype_wc(pci_resource_start(dev->pdev, 0),
+				pci_resource_len(dev->pdev, 0));
 	arch_phys_wc_del(mdev->fb_mtrr);
 	mdev->fb_mtrr = 0;
 }

drivers/gpu/drm/nouveau/nouveau_ttm.c

···
 	/* VRAM init */
 	drm->gem.vram_available = drm->device.info.ram_user;
 
+	arch_io_reserve_memtype_wc(device->func->resource_addr(device, 1),
+				   device->func->resource_size(device, 1));
+
 	ret = ttm_bo_init_mm(&drm->ttm.bdev, TTM_PL_VRAM,
 			      drm->gem.vram_available >> PAGE_SHIFT);
 	if (ret) {
···
 void
 nouveau_ttm_fini(struct nouveau_drm *drm)
 {
+	struct nvkm_device *device = nvxx_device(&drm->device);
+
 	ttm_bo_clean_mm(&drm->ttm.bdev, TTM_PL_VRAM);
 	ttm_bo_clean_mm(&drm->ttm.bdev, TTM_PL_TT);
 
···
 
 	arch_phys_wc_del(drm->ttm.mtrr);
 	drm->ttm.mtrr = 0;
+	arch_io_free_memtype_wc(device->func->resource_addr(device, 1),
+				device->func->resource_size(device, 1));
+
 }

drivers/gpu/drm/radeon/radeon_object.c

···
 
 int radeon_bo_init(struct radeon_device *rdev)
 {
+	/* reserve PAT memory space to WC for VRAM */
+	arch_io_reserve_memtype_wc(rdev->mc.aper_base,
+				   rdev->mc.aper_size);
+
 	/* Add an MTRR for the VRAM */
 	if (!rdev->fastfb_working) {
 		rdev->mc.vram_mtrr = arch_phys_wc_add(rdev->mc.aper_base,
···
 {
 	radeon_ttm_fini(rdev);
 	arch_phys_wc_del(rdev->mc.vram_mtrr);
+	arch_io_free_memtype_wc(rdev->mc.aper_base, rdev->mc.aper_size);
 }
 
 /* Returns how many bytes TTM can move per IB.

drivers/hv/hv_util.c

···
 	u8 *hbeat_txf_buf = util_heartbeat.recv_buffer;
 	struct icmsg_negotiate *negop = NULL;
 
-	vmbus_recvpacket(channel, hbeat_txf_buf,
-			 PAGE_SIZE, &recvlen, &requestid);
+	while (1) {
 
-	if (recvlen > 0) {
+		vmbus_recvpacket(channel, hbeat_txf_buf,
+				 PAGE_SIZE, &recvlen, &requestid);
+
+		if (!recvlen)
+			break;
+
 		icmsghdrp = (struct icmsg_hdr *)&hbeat_txf_buf[
 				sizeof(struct vmbuspipe_hdr)];
 

drivers/i2c/busses/Kconfig

···
 
 config I2C_HIX5HD2
 	tristate "Hix5hd2 high-speed I2C driver"
-	depends on ARCH_HIX5HD2 || COMPILE_TEST
+	depends on ARCH_HISI || ARCH_HIX5HD2 || COMPILE_TEST
 	help
-	  Say Y here to include support for high-speed I2C controller in the
-	  Hisilicon based hix5hd2 SoCs.
+	  Say Y here to include support for the high-speed I2C controller
+	  used in HiSilicon hix5hd2 SoCs.
 
-	  This driver can also be built as a module.  If so, the module
+	  This driver can also be built as a module. If so, the module
 	  will be called i2c-hix5hd2.
 
 config I2C_I801
···
 
 config I2C_IMX
 	tristate "IMX I2C interface"
-	depends on ARCH_MXC || ARCH_LAYERSCAPE
+	depends on ARCH_MXC || ARCH_LAYERSCAPE || COLDFIRE
 	help
 	  Say Y here if you want to use the IIC bus controller on
-	  the Freescale i.MX/MXC or Layerscape processors.
+	  the Freescale i.MX/MXC, Layerscape or ColdFire processors.
 
 	  This driver can also be built as a module.  If so, the module
 	  will be called i2c-imx.

drivers/i2c/busses/i2c-designware-core.c

···
 #define DW_IC_STATUS_TFE		BIT(2)
 #define DW_IC_STATUS_MST_ACTIVITY	BIT(5)
 
+#define DW_IC_SDA_HOLD_RX_SHIFT		16
+#define DW_IC_SDA_HOLD_RX_MASK		GENMASK(23, DW_IC_SDA_HOLD_RX_SHIFT)
+
 #define DW_IC_ERR_TX_ABRT	0x1
 
 #define DW_IC_TAR_10BITADDR_MASTER BIT(12)
···
 	/* Configure SDA Hold Time if required */
 	reg = dw_readl(dev, DW_IC_COMP_VERSION);
 	if (reg >= DW_IC_SDA_HOLD_MIN_VERS) {
-		if (dev->sda_hold_time) {
-			dw_writel(dev, dev->sda_hold_time, DW_IC_SDA_HOLD);
-		} else {
+		if (!dev->sda_hold_time) {
 			/* Keep previous hold time setting if no one set it */
 			dev->sda_hold_time = dw_readl(dev, DW_IC_SDA_HOLD);
 		}
+		/*
+		 * Workaround for avoiding TX arbitration lost in case I2C
+		 * slave pulls SDA down "too quickly" after falling egde of
+		 * SCL by enabling non-zero SDA RX hold. Specification says it
+		 * extends incoming SDA low to high transition while SCL is
+		 * high but it apprears to help also above issue.
+		 */
+		if (!(dev->sda_hold_time & DW_IC_SDA_HOLD_RX_MASK))
+			dev->sda_hold_time |= 1 << DW_IC_SDA_HOLD_RX_SHIFT;
+		dw_writel(dev, dev->sda_hold_time, DW_IC_SDA_HOLD);
 	} else {
 		dev_warn(dev->dev,
 			"Hardware too old to adjust SDA hold time.\n");

drivers/i2c/busses/i2c-digicolor.c

···
 	{ .compatible = "cnxt,cx92755-i2c" },
 	{ },
 };
+MODULE_DEVICE_TABLE(of, dc_i2c_match);
 
 static struct platform_driver dc_i2c_driver = {
 	.probe   = dc_i2c_probe,

drivers/i2c/busses/i2c-i801.c

···
 #define SMBHSTCFG_HST_EN	1
 #define SMBHSTCFG_SMB_SMI_EN	2
 #define SMBHSTCFG_I2C_EN	4
+#define SMBHSTCFG_SPD_WD	0x10
 
 /* TCO configuration bits for TCOCTL */
 #define TCOCTL_EN		0x0100
···
 		block = 1;
 		break;
 	case I2C_SMBUS_I2C_BLOCK_DATA:
-		/* NB: page 240 of ICH5 datasheet shows that the R/#W
-		 * bit should be cleared here, even when reading */
-		outb_p((addr & 0x7f) << 1, SMBHSTADD(priv));
+		/*
+		 * NB: page 240 of ICH5 datasheet shows that the R/#W
+		 * bit should be cleared here, even when reading.
+		 * However if SPD Write Disable is set (Lynx Point and later),
+		 * the read will fail if we don't set the R/#W bit.
+		 */
+		outb_p(((addr & 0x7f) << 1) |
+		       ((priv->original_hstcfg & SMBHSTCFG_SPD_WD) ?
+			(read_write & 0x01) : 0),
+		       SMBHSTADD(priv));
 		if (read_write == I2C_SMBUS_READ) {
 			/* NB: page 240 of ICH5 datasheet also shows
 			 * that DATA1 is the cmd field when reading */
···
 		/* Disable SMBus interrupt feature if SMBus using SMI# */
 		priv->features &= ~FEATURE_IRQ;
 	}
+	if (temp & SMBHSTCFG_SPD_WD)
+		dev_info(&dev->dev, "SPD Write Disable is set\n");
 
 	/* Clear special mode bits */
 	if (priv->features & (FEATURE_SMBUS_PEC | FEATURE_BLOCK_BUFFER))

drivers/i2c/busses/i2c-imx.c

···
 	rinfo->sda_gpio = of_get_named_gpio(pdev->dev.of_node, "sda-gpios", 0);
 	rinfo->scl_gpio = of_get_named_gpio(pdev->dev.of_node, "scl-gpios", 0);
 
-	if (!gpio_is_valid(rinfo->sda_gpio) ||
-	    !gpio_is_valid(rinfo->scl_gpio) ||
-	    IS_ERR(i2c_imx->pinctrl_pins_default) ||
-	    IS_ERR(i2c_imx->pinctrl_pins_gpio)) {
+	if (rinfo->sda_gpio == -EPROBE_DEFER ||
+	    rinfo->scl_gpio == -EPROBE_DEFER) {
+		return -EPROBE_DEFER;
+	} else if (!gpio_is_valid(rinfo->sda_gpio) ||
+		   !gpio_is_valid(rinfo->scl_gpio) ||
+		   IS_ERR(i2c_imx->pinctrl_pins_default) ||
+		   IS_ERR(i2c_imx->pinctrl_pins_gpio)) {
 		dev_dbg(&pdev->dev, "recovery information incomplete\n");
 		return 0;
 	}

drivers/i2c/busses/i2c-jz4780.c

···
 	{ .compatible = "ingenic,jz4780-i2c", },
 	{ /* sentinel */ }
 };
+MODULE_DEVICE_TABLE(of, jz4780_i2c_of_matches);
 
 static int jz4780_i2c_probe(struct platform_device *pdev)
 {

drivers/i2c/busses/i2c-rk3x.c

···
 	t_calc->div_low--;
 	t_calc->div_high--;
 
+	/* Give the tuning value 0, that would not update con register */
+	t_calc->tuning = 0;
 	/* Maximum divider supported by hw is 0xffff */
 	if (t_calc->div_low > 0xffff) {
 		t_calc->div_low = 0xffff;

drivers/i2c/busses/i2c-xgene-slimpro.c

···
 	struct mbox_chan *mbox_chan;
 	struct mbox_client mbox_client;
 	struct completion rd_complete;
-	u8 dma_buffer[I2C_SMBUS_BLOCK_MAX];
+	u8 dma_buffer[I2C_SMBUS_BLOCK_MAX + 1]; /* dma_buffer[0] is used for length */
 	u32 *resp_msg;
 };
 

drivers/i2c/busses/i2c-xlp9xx.c

···
 	{ .compatible = "netlogic,xlp980-i2c", },
 	{ /* sentinel */ },
 };
+MODULE_DEVICE_TABLE(of, xlp9xx_i2c_of_match);
 
 #ifdef CONFIG_ACPI
 static const struct acpi_device_id xlp9xx_i2c_acpi_ids[] = {

drivers/i2c/busses/i2c-xlr.c

···
 	},
 	{ }
 };
+MODULE_DEVICE_TABLE(of, xlr_i2c_dt_ids);
 
 static int xlr_i2c_probe(struct platform_device *pdev)
 {

drivers/i2c/i2c-core.c

···
 static void of_i2c_register_devices(struct i2c_adapter *adap)
 {
 	struct device_node *bus, *node;
+	struct i2c_client *client;
 
 	/* Only register child devices if the adapter has a node pointer set */
 	if (!adap->dev.of_node)
···
 	for_each_available_child_of_node(bus, node) {
 		if (of_node_test_and_set_flag(node, OF_POPULATED))
 			continue;
-		of_i2c_register_device(adap, node);
+
+		client = of_i2c_register_device(adap, node);
+		if (IS_ERR(client)) {
+			dev_warn(&adap->dev,
+				 "Failed to create I2C device for %s\n",
+				 node->full_name);
+			of_node_clear_flag(node, OF_POPULATED);
+		}
 	}
 
 	of_node_put(bus);
···
 		if (IS_ERR(client)) {
 			dev_err(&adap->dev, "failed to create client for '%s'\n",
 				 rd->dn->full_name);
+			of_node_clear_flag(rd->dn, OF_POPULATED);
 			return notifier_from_errno(PTR_ERR(client));
 		}
 		break;

drivers/iio/adc/Kconfig

···
 config TI_ADC081C
 	tristate "Texas Instruments ADC081C/ADC101C/ADC121C family"
 	depends on I2C
+	select IIO_BUFFER
+	select IIO_TRIGGERED_BUFFER
 	help
 	  If you say yes here you get support for Texas Instruments ADC081C,
 	  ADC101C and ADC121C ADC chips.

drivers/iio/chemical/atlas-ph-sensor.c

···
 	struct device *dev = &data->client->dev;
 	int ret;
 	unsigned int val;
+	__be16	rval;
 
-	ret = regmap_bulk_read(data->regmap, ATLAS_REG_EC_PROBE, &val, 2);
+	ret = regmap_bulk_read(data->regmap, ATLAS_REG_EC_PROBE, &rval, 2);
 	if (ret)
 		return ret;
 
-	dev_info(dev, "probe set to K = %d.%.2d", be16_to_cpu(val) / 100,
-						 be16_to_cpu(val) % 100);
+	val = be16_to_cpu(rval);
+	dev_info(dev, "probe set to K = %d.%.2d", val / 100, val % 100);
 
 	ret = regmap_read(data->regmap, ATLAS_REG_EC_CALIB_STATUS, &val);
 	if (ret)

drivers/iio/temperature/maxim_thermocouple.c

···
 {
 	unsigned int storage_bytes = data->chip->read_size;
 	unsigned int shift = chan->scan_type.shift + (chan->address * 8);
-	unsigned int buf;
+	__be16 buf16;
+	__be32 buf32;
 	int ret;
-
-	ret = spi_read(data->spi, (void *) &buf, storage_bytes);
-	if (ret)
-		return ret;
 
 	switch (storage_bytes) {
 	case 2:
-		*val = be16_to_cpu(buf);
+		ret = spi_read(data->spi, (void *)&buf16, storage_bytes);
+		*val = be16_to_cpu(buf16);
 		break;
 	case 4:
-		*val = be32_to_cpu(buf);
+		ret = spi_read(data->spi, (void *)&buf32, storage_bytes);
+		*val = be32_to_cpu(buf32);
 		break;
 	}
+
+	if (ret)
+		return ret;
 
 	/* check to be sure this is a valid reading */
 	if (*val & data->chip->status_bit)

drivers/ipack/ipack.c

···
 		       idev->id_vendor, idev->id_device);
 }
 
-ipack_device_attr(id_format, "0x%hhu\n");
+ipack_device_attr(id_format, "0x%hhx\n");
 
 static DEVICE_ATTR_RO(id);
 static DEVICE_ATTR_RO(id_device);

drivers/md/dm-raid.c

···
 	{"raid10_offset", "raid10 offset (striped mirrors)",	    0, 2, 10, ALGORITHM_RAID10_OFFSET},
 	{"raid10_near",	  "raid10 near (striped mirrors)",	    0, 2, 10, ALGORITHM_RAID10_NEAR},
 	{"raid10",	  "raid10 (striped mirrors)",		    0, 2, 10, ALGORITHM_RAID10_DEFAULT},
-	{"raid4",	  "raid4 (dedicated last parity disk)",	    1, 2, 4,  ALGORITHM_PARITY_N}, /* raid4 layout = raid5_n */
+	{"raid4",	  "raid4 (dedicated first parity disk)",    1, 2, 5,  ALGORITHM_PARITY_0}, /* raid4 layout = raid5_0 */
 	{"raid5_n",	  "raid5 (dedicated last parity disk)",	    1, 2, 5,  ALGORITHM_PARITY_N},
 	{"raid5_ls",	  "raid5 (left symmetric)",		    1, 2, 5,  ALGORITHM_LEFT_SYMMETRIC},
 	{"raid5_rs",	  "raid5 (right symmetric)",		    1, 2, 5,  ALGORITHM_RIGHT_SYMMETRIC},
···
 		/*
 		 * No takeover/reshaping, because we don't have the extended v1.9.0 metadata
 		 */
-		if (le32_to_cpu(sb->level) != mddev->level) {
+		if (le32_to_cpu(sb->level) != mddev->new_level) {
 			DMERR("Reshaping/takeover raid sets not yet supported. (raid level/stripes/size change)");
 			return -EINVAL;
 		}
-		if (le32_to_cpu(sb->layout) != mddev->layout) {
+		if (le32_to_cpu(sb->layout) != mddev->new_layout) {
 			DMERR("Reshaping raid sets not yet supported. (raid layout change)");
 			DMERR("	 0x%X vs 0x%X", le32_to_cpu(sb->layout), mddev->layout);
 			DMERR("	 Old layout: %s w/ %d copies",
···
 			      raid10_md_layout_to_copies(mddev->layout));
 			return -EINVAL;
 		}
-		if (le32_to_cpu(sb->stripe_sectors) != mddev->chunk_sectors) {
+		if (le32_to_cpu(sb->stripe_sectors) != mddev->new_chunk_sectors) {
 			DMERR("Reshaping raid sets not yet supported. (stripe sectors change)");
 			return -EINVAL;
 		}
···
 			      sb->num_devices, mddev->raid_disks);
 			return -EINVAL;
 		}
+
+		DMINFO("Discovered old metadata format; upgrading to extended metadata format");
 
 		/* Table line is checked vs. authoritative superblock */
 		rs_set_new(rs);
···
 	if (!mddev->events && super_init_validation(rs, rdev))
 		return -EINVAL;
 
-	if (le32_to_cpu(sb->compat_features) != FEATURE_FLAG_SUPPORTS_V190) {
+	if (le32_to_cpu(sb->compat_features) &&
+	    le32_to_cpu(sb->compat_features) != FEATURE_FLAG_SUPPORTS_V190) {
 		rs->ti->error = "Unable to assemble array: Unknown flag(s) in compatible feature flags";
 		return -EINVAL;
 	}
···
 
 static struct target_type raid_target = {
 	.name = "raid",
-	.version = {1, 9, 0},
+	.version = {1, 9, 1},
 	.module = THIS_MODULE,
 	.ctr = raid_ctr,
 	.dtr = raid_dtr,

drivers/md/dm-raid1.c

···
 
 struct dm_raid1_bio_record {
 	struct mirror *m;
-	/* if details->bi_bdev == NULL, details were not saved */
 	struct dm_bio_details details;
 	region_t write_region;
 };
···
 	struct dm_raid1_bio_record *bio_record =
 	  dm_per_bio_data(bio, sizeof(struct dm_raid1_bio_record));
 
-	bio_record->details.bi_bdev = NULL;
-
 	if (rw == WRITE) {
 		/* Save region for mirror_end_io() handler */
 		bio_record->write_region = dm_rh_bio_to_region(ms->rh, bio);
···
 	}
 
 	if (error == -EOPNOTSUPP)
-		goto out;
+		return error;
 
 	if ((error == -EWOULDBLOCK) && (bio->bi_opf & REQ_RAHEAD))
-		goto out;
+		return error;
 
 	if (unlikely(error)) {
-		if (!bio_record->details.bi_bdev) {
-			/*
-			 * There wasn't enough memory to record necessary
-			 * information for a retry or there was no other
-			 * mirror in-sync.
-			 */
-			DMERR_LIMIT("Mirror read failed.");
-			return -EIO;
-		}
-
 		m = bio_record->m;
 
 		DMERR("Mirror read failed from %s. Trying alternative device.",
···
 			bd = &bio_record->details;
 
 			dm_bio_restore(bd, bio);
-			bio_record->details.bi_bdev = NULL;
+			bio->bi_error = 0;
 
 			queue_bio(ms, bio, rw);
 			return DM_ENDIO_INCOMPLETE;
 		}
 		DMERR("All replicated volumes dead, failing I/O");
 	}
-
-out:
-	bio_record->details.bi_bdev = NULL;
 
 	return error;
 }

drivers/md/dm-rq.c

···
 	kthread_init_worker(&md->kworker);
 	md->kworker_task = kthread_run(kthread_worker_fn, &md->kworker,
 				       "kdmwork-%s", dm_device_name(md));
-	if (IS_ERR(md->kworker_task))
-		return PTR_ERR(md->kworker_task);
+	if (IS_ERR(md->kworker_task)) {
+		int error = PTR_ERR(md->kworker_task);
+		md->kworker_task = NULL;
+		return error;
+	}
 
 	elv_register_queue(md->queue);
 

drivers/md/dm-table.c

···
 
 	tgt->type = dm_get_target_type(type);
 	if (!tgt->type) {
-		DMERR("%s: %s: unknown target type", dm_device_name(t->md),
-		      type);
+		DMERR("%s: %s: unknown target type", dm_device_name(t->md), type);
 		return -EINVAL;
 	}
 
 	if (dm_target_needs_singleton(tgt->type)) {
 		if (t->num_targets) {
-			DMERR("%s: target type %s must appear alone in table",
-			      dm_device_name(t->md), type);
-			return -EINVAL;
+			tgt->error = "singleton target type must appear alone in table";
+			goto bad;
 		}
 		t->singleton = true;
 	}
 
 	if (dm_target_always_writeable(tgt->type) && !(t->mode & FMODE_WRITE)) {
-		DMERR("%s: target type %s may not be included in read-only tables",
-		      dm_device_name(t->md), type);
-		return -EINVAL;
+		tgt->error = "target type may not be included in a read-only table";
+		goto bad;
 	}
 
 	if (t->immutable_target_type) {
 		if (t->immutable_target_type != tgt->type) {
-			DMERR("%s: immutable target type %s cannot be mixed with other target types",
-			      dm_device_name(t->md), t->immutable_target_type->name);
-			return -EINVAL;
+			tgt->error = "immutable target type cannot be mixed with other target types";
+			goto bad;
 		}
 	} else if (dm_target_is_immutable(tgt->type)) {
 		if (t->num_targets) {
-			DMERR("%s: immutable target type %s cannot be mixed with other target types",
-			      dm_device_name(t->md), tgt->type->name);
-			return -EINVAL;
+			tgt->error = "immutable target type cannot be mixed with other target types";
+			goto bad;
 		}
 		t->immutable_target_type = tgt->type;
 	}
···
 	 */
 	if (!adjoin(t, tgt)) {
 		tgt->error = "Gap in table";
-		r = -EINVAL;
 		goto bad;
 	}
 

drivers/md/dm.c

···
 	if (md->bs)
 		bioset_free(md->bs);
 
-	cleanup_srcu_struct(&md->io_barrier);
-
 	if (md->disk) {
 		spin_lock(&_minor_lock);
 		md->disk->private_data = NULL;
···
 
 	if (md->queue)
 		blk_cleanup_queue(md->queue);
+
+	cleanup_srcu_struct(&md->io_barrier);
 
 	if (md->bdev) {
 		bdput(md->bdev);

drivers/misc/cxl/api.c

···
 	cxl_ctx_get();
 
 	if ((rc = cxl_ops->attach_process(ctx, kernel, wed, 0))) {
+		put_pid(ctx->glpid);
 		put_pid(ctx->pid);
+		ctx->glpid = ctx->pid = NULL;
 		cxl_adapter_context_put(ctx->afu->adapter);
 		cxl_ctx_put();
 		goto out;

drivers/misc/cxl/file.c

···
 	ctx->mmio_err_ff = !!(work.flags & CXL_START_WORK_ERR_FF);
 
 	/*
+	 * Increment the mapped context count for adapter. This also checks
+	 * if adapter_context_lock is taken.
+	 */
+	rc = cxl_adapter_context_get(ctx->afu->adapter);
+	if (rc) {
+		afu_release_irqs(ctx, ctx);
+		goto out;
+	}
+
+	/*
 	 * We grab the PID here and not in the file open to allow for the case
 	 * where a process (master, some daemon, etc) has opened the chardev on
 	 * behalf of another process, so the AFU's mm gets bound to the process
···
 	ctx->pid = get_task_pid(current, PIDTYPE_PID);
 	ctx->glpid = get_task_pid(current->group_leader, PIDTYPE_PID);
 
-	/*
-	 * Increment the mapped context count for adapter. This also checks
-	 * if adapter_context_lock is taken.
-	 */
-	rc = cxl_adapter_context_get(ctx->afu->adapter);
-	if (rc) {
-		afu_release_irqs(ctx, ctx);
-		goto out;
-	}
 
 	trace_cxl_attach(ctx, work.work_element_descriptor, work.num_interrupts, amr);
 
···
 							amr))) {
 		afu_release_irqs(ctx, ctx);
 		cxl_adapter_context_put(ctx->afu->adapter);
+		put_pid(ctx->glpid);
+		put_pid(ctx->pid);
+		ctx->glpid = ctx->pid = NULL;
 		goto out;
 	}
 

drivers/misc/genwqe/card_utils.c

···
 		if (copy_from_user(sgl->lpage, user_addr + user_size -
 				   sgl->lpage_size, sgl->lpage_size)) {
 			rc = -EFAULT;
-			goto err_out1;
+			goto err_out2;
 		}
 	}
 	return 0;
 
+ err_out2:
+	__genwqe_free_consistent(cd, PAGE_SIZE, sgl->lpage,
+				 sgl->lpage_dma_addr);
+	sgl->lpage = NULL;
+	sgl->lpage_dma_addr = 0;
  err_out1:
 	__genwqe_free_consistent(cd, PAGE_SIZE, sgl->fpage,
 				 sgl->fpage_dma_addr);
+	sgl->fpage = NULL;
+	sgl->fpage_dma_addr = 0;
  err_out:
 	__genwqe_free_consistent(cd, sgl->sgl_size, sgl->sgl,
 				 sgl->sgl_dma_addr);
+	sgl->sgl = NULL;
+	sgl->sgl_dma_addr = 0;
+	sgl->sgl_size = 0;
 	return -ENOMEM;
 }
 

drivers/misc/mei/hw-txe.c

···
 	hisr = mei_txe_br_reg_read(hw, HISR_REG);
 
 	aliveness = mei_txe_aliveness_get(dev);
-	if (hhisr & IPC_HHIER_SEC && aliveness)
+	if (hhisr & IPC_HHIER_SEC && aliveness) {
 		ipc_isr = mei_txe_sec_reg_read_silent(hw,
 				SEC_IPC_HOST_INT_STATUS_REG);
-	else
+	} else {
 		ipc_isr = 0;
+		hhisr &= ~IPC_HHIER_SEC;
+	}
 
 	generated = generated ||
 		(hisr & HISR_INT_STS_MSK) ||

drivers/misc/sgi-gru/grumain.c

···
 	spin_lock(&gru->gs_asid_lock);
 	BUG_ON((asids->mt_ctxbitmap & ctxbitmap) != ctxbitmap);
 	asids->mt_ctxbitmap ^= ctxbitmap;
-	gru_dbg(grudev, "gid %d, gts %p, gms %p, ctxnum 0x%d, asidmap 0x%lx\n",
+	gru_dbg(grudev, "gid %d, gts %p, gms %p, ctxnum %d, asidmap 0x%lx\n",
 		gru->gs_gid, gts, gms, gts->ts_ctxnum, gms->ms_asidmap[0]);
 	spin_unlock(&gru->gs_asid_lock);
 	spin_unlock(&gms->ms_asid_lock);

drivers/misc/vmw_vmci/vmci_doorbell.c

···
 	if (vmci_handle_is_invalid(*handle)) {
 		u32 context_id = vmci_get_context_id();
 
+		if (context_id == VMCI_INVALID_ID) {
+			pr_warn("Failed to get context ID\n");
+			result = VMCI_ERROR_NO_RESOURCES;
+			goto free_mem;
+		}
+
 		/* Let resource code allocate a free ID for us */
 		new_handle = vmci_make_handle(context_id, VMCI_INVALID_ID);
 	} else {
···
 
 	entry = container_of(resource, struct dbell_entry, resource);
 
-	if (vmci_guest_code_active()) {
+	if (!hlist_unhashed(&entry->node)) {
 		int result;
 
 		dbell_index_table_remove(entry);

drivers/misc/vmw_vmci/vmci_driver.c

···
 
 MODULE_AUTHOR("VMware, Inc.");
 MODULE_DESCRIPTION("VMware Virtual Machine Communication Interface.");
-MODULE_VERSION("1.1.4.0-k");
+MODULE_VERSION("1.1.5.0-k");
 MODULE_LICENSE("GPL v2");

drivers/mtd/ubi/fastmap.c

···
 			     fmvhdr->vol_type,
 			     be32_to_cpu(fmvhdr->last_eb_bytes));
 
-		if (!av)
-			goto fail_bad;
-		if (PTR_ERR(av) == -EINVAL) {
-			ubi_err(ubi, "volume (ID %i) already exists",
-				fmvhdr->vol_id);
+		if (IS_ERR(av)) {
+			if (PTR_ERR(av) == -EEXIST)
+				ubi_err(ubi, "volume (ID %i) already exists",
+					fmvhdr->vol_id);
+
 			goto fail_bad;
 		}
 

drivers/nvdimm/Kconfig

···
 	  Select Y if unsure
 
 config NVDIMM_DAX
-	tristate "NVDIMM DAX: Raw access to persistent memory"
+	bool "NVDIMM DAX: Raw access to persistent memory"
 	default LIBNVDIMM
 	depends on NVDIMM_PFN
 	help

drivers/nvdimm/namespace_devs.c

···
 	return devs;
 
  err:
-	for (i = 0; devs[i]; i++)
-		if (is_nd_blk(&nd_region->dev))
-			namespace_blk_release(devs[i]);
-		else
-			namespace_pmem_release(devs[i]);
-	kfree(devs);
+	if (devs) {
+		for (i = 0; devs[i]; i++)
+			if (is_nd_blk(&nd_region->dev))
+				namespace_blk_release(devs[i]);
+			else
+				namespace_pmem_release(devs[i]);
+		kfree(devs);
+	}
 	return NULL;
 }
 

drivers/nvdimm/pmem.c

···
 	return to_nd_region(to_dev(pmem)->parent);
 }
 
-static void pmem_clear_poison(struct pmem_device *pmem, phys_addr_t offset,
+static int pmem_clear_poison(struct pmem_device *pmem, phys_addr_t offset,
 		unsigned int len)
 {
 	struct device *dev = to_dev(pmem);
···
 				__func__, (unsigned long long) sector,
 				cleared / 512, cleared / 512 > 1 ? "s" : "");
 		badblocks_clear(&pmem->bb, sector, cleared / 512);
+	} else {
+		return -EIO;
 	}
+
 	invalidate_pmem(pmem->virt_addr + offset, len);
+	return 0;
 }
 
 static void write_pmem(void *pmem_addr, struct page *page,
···
 		flush_dcache_page(page);
 		write_pmem(pmem_addr, page, off, len);
 		if (unlikely(bad_pmem)) {
-			pmem_clear_poison(pmem, pmem_off, len);
+			rc = pmem_clear_poison(pmem, pmem_off, len);
 			write_pmem(pmem_addr, page, off, len);
 		}
 	}

drivers/pci/msi.c

···
  * msi_capability_init - configure device's MSI capability structure
  * @dev: pointer to the pci_dev data structure of MSI device function
  * @nvec: number of interrupts to allocate
+ * @affinity: flag to indicate cpu irq affinity mask should be set
  *
  * Setup the MSI capability structure of the device with the requested
  * number of interrupts.  A return value of zero indicates the successful
···
  * @dev: pointer to the pci_dev data structure of MSI-X device function
  * @entries: pointer to an array of struct msix_entry entries
  * @nvec: number of @entries
+ * @affinity: flag to indicate cpu irq affinity mask should be set
  *
  * Setup the MSI-X capability structure of device function with a
  * single MSI-X irq. A return of zero indicates the successful setup of

drivers/reset/reset-uniphier.c

···
 	UNIPHIER_RESET_END,
 };
 
-const struct uniphier_reset_data uniphier_pro5_mio_reset_data[] = {
+const struct uniphier_reset_data uniphier_pro5_sd_reset_data[] = {
 	UNIPHIER_MIO_RESET_SD(0, 0),
 	UNIPHIER_MIO_RESET_SD(1, 1),
 	UNIPHIER_MIO_RESET_EMMC_HW_RESET(6, 1),
···
 		.compatible = "socionext,uniphier-ld20-reset",
 		.data = uniphier_ld20_sys_reset_data,
 	},
-	/* Media I/O reset */
+	/* Media I/O reset, SD reset */
 	{
 		.compatible = "socionext,uniphier-sld3-mio-reset",
 		.data = uniphier_sld3_mio_reset_data,
···
 		.data = uniphier_sld3_mio_reset_data,
 	},
 	{
-		.compatible = "socionext,uniphier-pro5-mio-reset",
-		.data = uniphier_pro5_mio_reset_data,
+		.compatible = "socionext,uniphier-pro5-sd-reset",
+		.data = uniphier_pro5_sd_reset_data,
 	},
 	{
-		.compatible = "socionext,uniphier-pxs2-mio-reset",
-		.data = uniphier_pro5_mio_reset_data,
+		.compatible = "socionext,uniphier-pxs2-sd-reset",
+		.data = uniphier_pro5_sd_reset_data,
 	},
 	{
 		.compatible = "socionext,uniphier-ld11-mio-reset",
 		.data = uniphier_sld3_mio_reset_data,
 	},
 	{
-		.compatible = "socionext,uniphier-ld20-mio-reset",
-		.data = uniphier_pro5_mio_reset_data,
+		.compatible = "socionext,uniphier-ld20-sd-reset",
+		.data = uniphier_pro5_sd_reset_data,
 	},
 	/* Peripheral reset */
 	{

drivers/s390/block/dasd_eckd.c

···
 				 mdc, lpm);
 			return mdc;
 		}
-		fcx_max_data = mdc * FCX_MAX_DATA_FACTOR;
+		fcx_max_data = (u32)mdc * FCX_MAX_DATA_FACTOR;
 		if (fcx_max_data < private->fcx_max_data) {
 			dev_warn(&device->cdev->dev,
 				 "The maximum data size for zHPF requests %u "
···
 			 " data size for zHPF requests failed\n");
 		return 0;
 	} else
-		return mdc * FCX_MAX_DATA_FACTOR;
+		return (u32)mdc * FCX_MAX_DATA_FACTOR;
 }
 
 /*

drivers/s390/cio/chp.c

···
 static int __init chp_init(void)
 {
 	struct chp_id chpid;
-	int ret;
+	int state, ret;
 
 	ret = crw_register_handler(CRW_RSC_CPATH, chp_process_crw);
 	if (ret)
···
 		return 0;
 	/* Register available channel-paths. */
 	chp_id_for_each(&chpid) {
-		if (chp_info_get_status(chpid) != CHP_STATUS_NOT_RECOGNIZED)
+		state = chp_info_get_status(chpid);
+		if (state == CHP_STATUS_CONFIGURED ||
+		    state == CHP_STATUS_STANDBY)
 			chp_new(chpid);
 	}
 

drivers/scsi/NCR5380.c

···
 #endif
 
 
-static int probe_irq __initdata;
+static int probe_irq;
 
 /**
  * probe_intr	-	helper for IRQ autoprobe
···
  * used by the IRQ probe code.
  */
 
-static irqreturn_t __init probe_intr(int irq, void *dev_id)
+static irqreturn_t probe_intr(int irq, void *dev_id)
 {
 	probe_irq = irq;
 	return IRQ_HANDLED;
···
  * and then looking to see what interrupt actually turned up.
  */
 
-static int __init __maybe_unused NCR5380_probe_irq(struct Scsi_Host *instance,
+static int __maybe_unused NCR5380_probe_irq(struct Scsi_Host *instance,
 						int possible)
 {
 	struct NCR5380_hostdata *hostdata = shost_priv(instance);

drivers/scsi/be2iscsi/be_main.c

···
 static struct sgl_handle *alloc_io_sgl_handle(struct beiscsi_hba *phba)
 {
 	struct sgl_handle *psgl_handle;
+	unsigned long flags;
 
-	spin_lock_bh(&phba->io_sgl_lock);
+	spin_lock_irqsave(&phba->io_sgl_lock, flags);
 	if (phba->io_sgl_hndl_avbl) {
 		beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_IO,
 			    "BM_%d : In alloc_io_sgl_handle,"
···
 			phba->io_sgl_alloc_index++;
 	} else
 		psgl_handle = NULL;
-	spin_unlock_bh(&phba->io_sgl_lock);
+	spin_unlock_irqrestore(&phba->io_sgl_lock, flags);
 	return psgl_handle;
 }
 
 static void
 free_io_sgl_handle(struct beiscsi_hba *phba, struct sgl_handle *psgl_handle)
 {
-	spin_lock_bh(&phba->io_sgl_lock);
+	unsigned long flags;
+
+	spin_lock_irqsave(&phba->io_sgl_lock, flags);
 	beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_IO,
 		    "BM_%d : In free_,io_sgl_free_index=%d\n",
 		    phba->io_sgl_free_index);
···
 			     "value there=%p\n", phba->io_sgl_free_index,
 			     phba->io_sgl_hndl_base
 			     [phba->io_sgl_free_index]);
-		 spin_unlock_bh(&phba->io_sgl_lock);
+		 spin_unlock_irqrestore(&phba->io_sgl_lock, flags);
 		return;
 	}
 	phba->io_sgl_hndl_base[phba->io_sgl_free_index] = psgl_handle;
···
 		phba->io_sgl_free_index = 0;
 	else
 		phba->io_sgl_free_index++;
-	spin_unlock_bh(&phba->io_sgl_lock);
+	spin_unlock_irqrestore(&phba->io_sgl_lock, flags);
 }
 
 static inline struct wrb_handle *
···
 		       unsigned int wrbs_per_cxn)
 {
 	struct wrb_handle *pwrb_handle;
+	unsigned long flags;
 
-	spin_lock_bh(&pwrb_context->wrb_lock);
+	spin_lock_irqsave(&pwrb_context->wrb_lock, flags);
 	pwrb_handle = pwrb_context->pwrb_handle_base[pwrb_context->alloc_index];
 	pwrb_context->wrb_handles_available--;
 	if (pwrb_context->alloc_index == (wrbs_per_cxn - 1))
 		pwrb_context->alloc_index = 0;
 	else
 		pwrb_context->alloc_index++;
-	spin_unlock_bh(&pwrb_context->wrb_lock);
+	spin_unlock_irqrestore(&pwrb_context->wrb_lock, flags);
 
 	if (pwrb_handle)
 		memset(pwrb_handle->pwrb, 0, sizeof(*pwrb_handle->pwrb));
···
 		       struct wrb_handle *pwrb_handle,
 		       unsigned int wrbs_per_cxn)
 {
-	spin_lock_bh(&pwrb_context->wrb_lock);
+	unsigned long flags;
+
+	spin_lock_irqsave(&pwrb_context->wrb_lock, flags);
 	pwrb_context->pwrb_handle_base[pwrb_context->free_index] = pwrb_handle;
 	pwrb_context->wrb_handles_available++;
 	if (pwrb_context->free_index == (wrbs_per_cxn - 1))
 		pwrb_context->free_index = 0;
 	else
 		pwrb_context->free_index++;
-	spin_unlock_bh(&pwrb_context->wrb_lock);
+	spin_unlock_irqrestore(&pwrb_context->wrb_lock, flags);
 }
 
 /**
···
 static struct sgl_handle *alloc_mgmt_sgl_handle(struct beiscsi_hba *phba)
 {
 	struct sgl_handle *psgl_handle;
+	unsigned long flags;
 
-	spin_lock_bh(&phba->mgmt_sgl_lock);
+	spin_lock_irqsave(&phba->mgmt_sgl_lock, flags);
 	if (phba->eh_sgl_hndl_avbl) {
 		psgl_handle = phba->eh_sgl_hndl_base[phba->eh_sgl_alloc_index];
 		phba->eh_sgl_hndl_base[phba->eh_sgl_alloc_index] = NULL;
···
 			phba->eh_sgl_alloc_index++;
 	} else
 		psgl_handle = NULL;
-	spin_unlock_bh(&phba->mgmt_sgl_lock);
+	spin_unlock_irqrestore(&phba->mgmt_sgl_lock, flags);
 	return psgl_handle;
 }
 
 void
 free_mgmt_sgl_handle(struct beiscsi_hba *phba, struct sgl_handle *psgl_handle)
 {
-	spin_lock_bh(&phba->mgmt_sgl_lock);
+	unsigned long flags;
+
+	spin_lock_irqsave(&phba->mgmt_sgl_lock, flags);
 	beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
 		    "BM_%d : In  free_mgmt_sgl_handle,"
 		    "eh_sgl_free_index=%d\n",
···
 			    "BM_%d : Double Free in eh SGL ,"
 			    "eh_sgl_free_index=%d\n",
 			    phba->eh_sgl_free_index);
-		spin_unlock_bh(&phba->mgmt_sgl_lock);
+		spin_unlock_irqrestore(&phba->mgmt_sgl_lock, flags);
 		return;
 	}
 	phba->eh_sgl_hndl_base[phba->eh_sgl_free_index] = psgl_handle;
···
 		phba->eh_sgl_free_index = 0;
 	else
 		phba->eh_sgl_free_index++;
-	spin_unlock_bh(&phba->mgmt_sgl_lock);
+	spin_unlock_irqrestore(&phba->mgmt_sgl_lock, flags);
 }
 
 static void

drivers/scsi/libiscsi.c

···
 
 free_task:
 	/* regular RX path uses back_lock */
-	spin_lock_bh(&session->back_lock);
+	spin_lock(&session->back_lock);
 	__iscsi_put_task(task);
-	spin_unlock_bh(&session->back_lock);
+	spin_unlock(&session->back_lock);
 	return NULL;
 }
 

drivers/staging/android/ion/ion.c

···
 		hdata.type = heap->type;
 		hdata.heap_id = heap->id;
 
-		ret = copy_to_user(&buffer[cnt],
-				   &hdata, sizeof(hdata));
+		if (copy_to_user(&buffer[cnt], &hdata, sizeof(hdata))) {
+			ret = -EFAULT;
+			goto out;
+		}
 
 		cnt++;
 		if (cnt >= max_cnt)

drivers/staging/android/ion/ion_of.c

···
 
 		heap_pdev = of_platform_device_create(node, heaps[i].name,
 						      &pdev->dev);
-		if (!pdev)
+		if (!heap_pdev)
 			return ERR_PTR(-ENOMEM);
 		heap_pdev->dev.platform_data = &heaps[i];
 

drivers/staging/greybus/arche-platform.c

···
 	pdev = of_find_device_by_node(np);
 	if (!pdev) {
 		pr_err("arche-platform device not found\n");
+		of_node_put(np);
 		return -ENODEV;
 	}
 

drivers/staging/greybus/es2.c

···
 	INIT_LIST_HEAD(&es2->arpcs);
 	spin_lock_init(&es2->arpc_lock);
 
-	if (es2_arpc_in_enable(es2))
+	retval = es2_arpc_in_enable(es2);
+	if (retval)
 		goto error;
 
 	retval = gb_hd_add(hd);

drivers/staging/greybus/gpio.c

···
 	ret = gb_gpio_irqchip_add(gpio, irqc, 0,
 				   handle_level_irq, IRQ_TYPE_NONE);
 	if (ret) {
-		dev_err(&connection->bundle->dev,
-			"failed to add irq chip: %d\n", ret);
+		dev_err(&gbphy_dev->dev, "failed to add irq chip: %d\n", ret);
 		goto exit_line_free;
 	}
 
 	ret = gpiochip_add(gpio);
 	if (ret) {
-		dev_err(&connection->bundle->dev,
-			"failed to add gpio chip: %d\n", ret);
+		dev_err(&gbphy_dev->dev, "failed to add gpio chip: %d\n", ret);
 		goto exit_gpio_irqchip_remove;
 	}
 

drivers/staging/greybus/module.c

···
 	return module;
 
 err_put_interfaces:
-	for (--i; i > 0; --i)
+	for (--i; i >= 0; --i)
 		gb_interface_put(module->interfaces[i]);
 
 	put_device(&module->dev);

drivers/staging/greybus/uart.c

···
 	minor = alloc_minor(gb_tty);
 	if (minor < 0) {
 		if (minor == -ENOSPC) {
-			dev_err(&connection->bundle->dev,
+			dev_err(&gbphy_dev->dev,
 				"no more free minor numbers\n");
 			retval = -ENODEV;
 		} else {

drivers/staging/iio/accel/sca3000_core.c

···
 	case SCA3000_MEAS_MODE_OP_2:
 		*base_freq = info->option_mode_2_freq;
 		break;
+	default:
+		ret = -EINVAL;
 	}
 error_ret:
 	return ret;

drivers/staging/lustre/lustre/llite/lproc_llite.c

···
 }
 LUSTRE_RW_ATTR(xattr_cache);
 
-static ssize_t unstable_stats_show(struct kobject *kobj,
-				   struct attribute *attr,
-				   char *buf)
+static int ll_unstable_stats_seq_show(struct seq_file *m, void *v)
 {
-	struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
-					      ll_kobj);
+	struct super_block     *sb    = m->private;
+	struct ll_sb_info      *sbi   = ll_s2sbi(sb);
 	struct cl_client_cache *cache = sbi->ll_cache;
 	long pages;
 	int mb;
···
 	pages = atomic_long_read(&cache->ccc_unstable_nr);
 	mb = (pages * PAGE_SIZE) >> 20;
 
-	return sprintf(buf, "unstable_check:     %8d\n"
-			    "unstable_pages: %12ld\n"
-			    "unstable_mb:        %8d\n",
-			    cache->ccc_unstable_check, pages, mb);
+	seq_printf(m,
+		   "unstable_check:     %8d\n"
+		   "unstable_pages: %12ld\n"
+		   "unstable_mb:        %8d\n",
+		   cache->ccc_unstable_check, pages, mb);
+
+	return 0;
 }
 
-static ssize_t unstable_stats_store(struct kobject *kobj,
-				    struct attribute *attr,
-				    const char *buffer,
-				    size_t count)
+static ssize_t ll_unstable_stats_seq_write(struct file *file,
+					   const char __user *buffer,
+					   size_t count, loff_t *off)
 {
-	struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
-					      ll_kobj);
+	struct super_block *sb = ((struct seq_file *)file->private_data)->private;
+	struct ll_sb_info *sbi = ll_s2sbi(sb);
 	char kernbuf[128];
 	int val, rc;
 
···
 
 	return count;
 }
-LUSTRE_RW_ATTR(unstable_stats);
+LPROC_SEQ_FOPS(ll_unstable_stats);
 
 static ssize_t root_squash_show(struct kobject *kobj, struct attribute *attr,
 				char *buf)
···
 	/* { "filegroups",   lprocfs_rd_filegroups,  0, 0 }, */
 	{ "max_cached_mb",    &ll_max_cached_mb_fops, NULL },
 	{ "statahead_stats",  &ll_statahead_stats_fops, NULL, 0 },
+	{ "unstable_stats",   &ll_unstable_stats_fops, NULL },
 	{ "sbi_flags",	      &ll_sbi_flags_fops, NULL, 0 },
 	{ .name =		"nosquash_nids",
 	  .fops =		&ll_nosquash_nids_fops		},
···
 	&lustre_attr_max_easize.attr,
 	&lustre_attr_default_easize.attr,
 	&lustre_attr_xattr_cache.attr,
-	&lustre_attr_unstable_stats.attr,
 	&lustre_attr_root_squash.attr,
 	NULL,
 };

drivers/staging/wilc1000/host_interface.c

···
 
 	clients_count++;
 
-	destroy_workqueue(hif_workqueue);
 _fail_:
 	return result;
 }

drivers/thermal/intel_pch_thermal.c

···
 #include <linux/types.h>
 #include <linux/init.h>
 #include <linux/pci.h>
+#include <linux/acpi.h>
 #include <linux/thermal.h>
 #include <linux/pm.h>
 
 /* Intel PCH thermal Device IDs */
+#define PCH_THERMAL_DID_HSW_1	0x9C24 /* Haswell PCH */
+#define PCH_THERMAL_DID_HSW_2	0x8C24 /* Haswell PCH */
 #define PCH_THERMAL_DID_WPT	0x9CA4 /* Wildcat Point */
 #define PCH_THERMAL_DID_SKL	0x9D31 /* Skylake PCH */
 
···
 	unsigned long crt_temp;
 	int hot_trip_id;
 	unsigned long hot_temp;
+	int psv_trip_id;
+	unsigned long psv_temp;
 	bool bios_enabled;
 };
+
+#ifdef CONFIG_ACPI
+
+/*
+ * On some platforms, there is a companion ACPI device, which adds
+ * passive trip temperature using _PSV method. There is no specific
+ * passive temperature setting in MMIO interface of this PCI device.
+ */
+static void pch_wpt_add_acpi_psv_trip(struct pch_thermal_device *ptd,
+				      int *nr_trips)
+{
+	struct acpi_device *adev;
+
+	ptd->psv_trip_id = -1;
+
+	adev = ACPI_COMPANION(&ptd->pdev->dev);
+	if (adev) {
+		unsigned long long r;
+		acpi_status status;
+
+		status = acpi_evaluate_integer(adev->handle, "_PSV", NULL,
+					       &r);
+		if (ACPI_SUCCESS(status)) {
+			unsigned long trip_temp;
+
+			trip_temp = DECI_KELVIN_TO_MILLICELSIUS(r);
+			if (trip_temp) {
+				ptd->psv_temp = trip_temp;
+				ptd->psv_trip_id = *nr_trips;
+				++(*nr_trips);
+			}
+		}
+	}
+}
+#else
+static void pch_wpt_add_acpi_psv_trip(struct pch_thermal_device *ptd,
+				      int *nr_trips)
+{
+	ptd->psv_trip_id = -1;
+
+}
+#endif
 
 static int pch_wpt_init(struct pch_thermal_device *ptd, int *nr_trips)
 {
···
 		ptd->hot_trip_id = *nr_trips;
 		++(*nr_trips);
 	}
+
+	pch_wpt_add_acpi_psv_trip(ptd, nr_trips);
 
 	return 0;
 }
···
 		*type = THERMAL_TRIP_CRITICAL;
 	else if (ptd->hot_trip_id == trip)
 		*type = THERMAL_TRIP_HOT;
+	else if (ptd->psv_trip_id == trip)
+		*type = THERMAL_TRIP_PASSIVE;
 	else
 		return -EINVAL;
 
···
 		*temp = ptd->crt_temp;
 	else if (ptd->hot_trip_id == trip)
 		*temp = ptd->hot_temp;
+	else if (ptd->psv_trip_id == trip)
+		*temp = ptd->psv_temp;
 	else
 		return -EINVAL;
 
···
 	case PCH_THERMAL_DID_SKL:
 		ptd->ops = &pch_dev_ops_wpt;
 		dev_name = "pch_skylake";
+		break;
+	case PCH_THERMAL_DID_HSW_1:
+	case PCH_THERMAL_DID_HSW_2:
+		ptd->ops = &pch_dev_ops_wpt;
+		dev_name = "pch_haswell";
 		break;
 	default:
 		dev_err(&pdev->dev, "unknown pch thermal device\n");
···
 static struct pci_device_id intel_pch_thermal_id[] = {
 	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCH_THERMAL_DID_WPT) },
 	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCH_THERMAL_DID_SKL) },
+	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCH_THERMAL_DID_HSW_1) },
+	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCH_THERMAL_DID_HSW_2) },
 	{ 0, },
 };
 MODULE_DEVICE_TABLE(pci, intel_pch_thermal_id);

drivers/thermal/intel_powerclamp.c

···
 	.set_cur_state = powerclamp_set_cur_state,
 };
 
-static const struct x86_cpu_id intel_powerclamp_ids[] __initconst = {
-	{ X86_VENDOR_INTEL, X86_FAMILY_ANY, X86_MODEL_ANY, X86_FEATURE_MWAIT },
-	{ X86_VENDOR_INTEL, X86_FAMILY_ANY, X86_MODEL_ANY, X86_FEATURE_ARAT },
-	{ X86_VENDOR_INTEL, X86_FAMILY_ANY, X86_MODEL_ANY, X86_FEATURE_NONSTOP_TSC },
-	{ X86_VENDOR_INTEL, X86_FAMILY_ANY, X86_MODEL_ANY, X86_FEATURE_CONSTANT_TSC},
-	{}
-};
-MODULE_DEVICE_TABLE(x86cpu, intel_powerclamp_ids);
-
 static int __init powerclamp_probe(void)
 {
-	if (!x86_match_cpu(intel_powerclamp_ids)) {
-		pr_err("Intel powerclamp does not run on family %d model %d\n",
-				boot_cpu_data.x86, boot_cpu_data.x86_model);
+	if (!boot_cpu_has(X86_FEATURE_MWAIT)) {
+		pr_err("CPU does not support MWAIT");
 		return -ENODEV;
 	}
 

drivers/tty/serial/8250/8250_lpss.c

···
 	struct pci_dev *pdev = to_pci_dev(port->dev);
 	int ret;
 
-	ret = pci_alloc_irq_vectors(pdev, 1, 1, 0);
+	ret = pci_alloc_irq_vectors(pdev, 1, 1, PCI_IRQ_ALL_TYPES);
 	if (ret < 0)
 		return ret;
 

drivers/tty/serial/8250/8250_port.c

···
 		.name		= "16550A",
 		.fifo_size	= 16,
 		.tx_loadsz	= 16,
-		.fcr		= UART_FCR_ENABLE_FIFO | UART_FCR_R_TRIG_10,
+		.fcr		= UART_FCR_ENABLE_FIFO | UART_FCR_R_TRIG_10 |
+				  UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT,
 		.rxtrig_bytes	= {1, 4, 8, 14},
 		.flags		= UART_CAP_FIFO,
 	},

drivers/tty/serial/8250/8250_uniphier.c

···
 	case UART_LCR:
 		valshift = UNIPHIER_UART_LCR_SHIFT;
 		/* Divisor latch access bit does not exist. */
-		value &= ~(UART_LCR_DLAB << valshift);
+		value &= ~UART_LCR_DLAB;
 		/* fall through */
 	case UART_MCR:
 		offset = UNIPHIER_UART_LCR_MCR;
···
 
 	regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	if (!regs) {
-		dev_err(dev, "failed to get memory resource");
+		dev_err(dev, "failed to get memory resource\n");
 		return -EINVAL;
 	}
 

drivers/tty/serial/Kconfig

···
 config SERIAL_STM32
 	tristate "STMicroelectronics STM32 serial port support"
 	select SERIAL_CORE
+	depends on HAS_DMA
 	depends on ARM || COMPILE_TEST
 	help
 	  This driver is for the on-chip Serial Controller on

drivers/tty/serial/atmel_serial.c

···
 		mode |= ATMEL_US_USMODE_RS485;
 	} else if (termios->c_cflag & CRTSCTS) {
 		/* RS232 with hardware handshake (RTS/CTS) */
-		if (atmel_use_dma_rx(port) && !atmel_use_fifo(port)) {
-			dev_info(port->dev, "not enabling hardware flow control because DMA is used");
-			termios->c_cflag &= ~CRTSCTS;
-		} else {
+		if (atmel_use_fifo(port) &&
+		    !mctrl_gpio_to_gpiod(atmel_port->gpios, UART_GPIO_CTS)) {
+			/*
+			 * with ATMEL_US_USMODE_HWHS set, the controller will
+			 * be able to drive the RTS pin high/low when the RX
+			 * FIFO is above RXFTHRES/below RXFTHRES2.
+			 * It will also disable the transmitter when the CTS
+			 * pin is high.
+			 * This mode is not activated if CTS pin is a GPIO
+			 * because in this case, the transmitter is always
+			 * disabled (there must be an internal pull-up
+			 * responsible for this behaviour).
+			 * If the RTS pin is a GPIO, the controller won't be
+			 * able to drive it according to the FIFO thresholds,
+			 * but it will be handled by the driver.
+			 */
 			mode |= ATMEL_US_USMODE_HWHS;
+		} else {
+			/*
+			 * For platforms without FIFO, the flow control is
+			 * handled by the driver.
+			 */
+			mode |= ATMEL_US_USMODE_NORMAL;
 		}
 	} else {
 		/* RS232 without hadware handshake */

drivers/tty/serial/fsl_lpuart.c

···
 
 	sport->dma_tx_bytes = uart_circ_chars_pending(xmit);
 
-	if (xmit->tail < xmit->head) {
+	if (xmit->tail < xmit->head || xmit->head == 0) {
 		sport->dma_tx_nents = 1;
 		sg_init_one(sgl, xmit->buf + xmit->tail, sport->dma_tx_bytes);
 	} else {
···
 	sport->dma_tx_in_progress = true;
 	sport->dma_tx_cookie = dmaengine_submit(sport->dma_tx_desc);
 	dma_async_issue_pending(sport->dma_tx_chan);
-
 }
 
 static void lpuart_dma_tx_complete(void *arg)

drivers/tty/serial/pch_uart.c

···
 		},
 		(void *)MINNOW_UARTCLK,
 	},
+	{ }
 };
 
 /* Return UART clock, checking for board specific clocks. */

drivers/tty/serial/sc16is7xx.c

···
 {
 	struct sc16is7xx_port *s = gpiochip_get_data(chip);
 	struct uart_port *port = &s->p[0].port;
+	u8 state = sc16is7xx_port_read(port, SC16IS7XX_IOSTATE_REG);
 
-	sc16is7xx_port_update(port, SC16IS7XX_IOSTATE_REG, BIT(offset),
-			      val ? BIT(offset) : 0);
+	if (val)
+		state |= BIT(offset);
+	else
+		state &= ~BIT(offset);
+	sc16is7xx_port_write(port, SC16IS7XX_IOSTATE_REG, state);
 	sc16is7xx_port_update(port, SC16IS7XX_IODIR_REG, BIT(offset),
 			      BIT(offset));
 

drivers/tty/serial/serial_core.c

···
 	 * closed.  No cookie for you.
 	 */
 	BUG_ON(!state);
-	tty_wakeup(state->port.tty);
+	tty_port_tty_wakeup(&state->port);
 }
 
 static void uart_stop(struct tty_struct *tty)
···
 	if (port->ops->flush_buffer)
 		port->ops->flush_buffer(port);
 	uart_port_unlock(port, flags);
-	tty_wakeup(tty);
+	tty_port_tty_wakeup(&state->port);
 }
 
 /*
···
 	uport->cons = drv->cons;
 	uport->minor = drv->tty_driver->minor_start + uport->line;
 
-	port->console = uart_console(uport);
-
 	/*
 	 * If this port is a console, then the spinlock is already
 	 * initialised.
···
 		of_console_check(uport->dev->of_node, uport->cons->name, uport->line);
 
 	uart_configure_port(drv, state, uport);
+
+	port->console = uart_console(uport);
 
 	num_groups = 2;
 	if (uport->attr_group)

drivers/tty/serial/stm32-usart.h

···
 	struct stm32_usart_config cfg;
 };
 
-#define UNDEF_REG ~0
+#define UNDEF_REG 0xff
 
 /* Register offsets */
 struct stm32_usart_info stm32f4_info = {

drivers/tty/serial/xilinx_uartps.c

···
 OF_EARLYCON_DECLARE(cdns, "xlnx,xuartps", cdns_early_console_setup);
 OF_EARLYCON_DECLARE(cdns, "cdns,uart-r1p8", cdns_early_console_setup);
 OF_EARLYCON_DECLARE(cdns, "cdns,uart-r1p12", cdns_early_console_setup);
+OF_EARLYCON_DECLARE(cdns, "xlnx,zynqmp-uart", cdns_early_console_setup);
 
 /**
  * cdns_uart_console_write - perform write operation
···
 	{ .compatible = "xlnx,xuartps", },
 	{ .compatible = "cdns,uart-r1p8", },
 	{ .compatible = "cdns,uart-r1p12", .data = &zynqmp_uart_def },
+	{ .compatible = "xlnx,zynqmp-uart", .data = &zynqmp_uart_def },
 	{}
 };
 MODULE_DEVICE_TABLE(of, cdns_uart_of_match);

drivers/tty/vt/vt.c

···
 	if (new_cols == vc->vc_cols && new_rows == vc->vc_rows)
 		return 0;
 
+	if (new_screen_size > (4 << 20))
+		return -EINVAL;
 	newscreen = kmalloc(new_screen_size, GFP_USER);
 	if (!newscreen)
 		return -ENOMEM;
+
+	if (vc == sel_cons)
+		clear_selection();
 
 	old_rows = vc->vc_rows;
 	old_row_size = vc->vc_size_row;
···
 			break;
 		case 3: /* erase scroll-back buffer (and whole display) */
 			scr_memsetw(vc->vc_screenbuf, vc->vc_video_erase_char,
-				    vc->vc_screenbuf_size >> 1);
+				    vc->vc_screenbuf_size);
 			set_origin(vc);
 			if (con_is_visible(vc))
 				update_screen(vc);

drivers/usb/chipidea/host.c

···
 
 	if (hcd) {
 		usb_remove_hcd(hcd);
+		ci->role = CI_ROLE_END;
+		synchronize_irq(ci->irq);
 		usb_put_hcd(hcd);
 		if (ci->platdata->reg_vbus && !ci_otg_is_fsm_mode(ci) &&
 			(ci->platdata->flags & CI_HDRC_TURN_VBUS_EARLY_ON))

drivers/usb/dwc2/core.c

···
  */
 void dwc2_force_dr_mode(struct dwc2_hsotg *hsotg)
 {
+	bool ret;
+
 	switch (hsotg->dr_mode) {
 	case USB_DR_MODE_HOST:
-		dwc2_force_mode(hsotg, true);
+		ret = dwc2_force_mode(hsotg, true);
+		/*
+		 * NOTE: This is required for some rockchip soc based
+		 * platforms on their host-only dwc2.
+		 */
+		if (!ret)
+			msleep(50);
+
 		break;
 	case USB_DR_MODE_PERIPHERAL:
 		dwc2_force_mode(hsotg, false);

drivers/usb/dwc2/core.h

···
 	DWC2_L3,	/* Off state */
 };
 
+/*
+ * Gadget periodic tx fifo sizes as used by legacy driver
+ * EP0 is not included
+ */
+#define DWC2_G_P_LEGACY_TX_FIFO_SIZE {256, 256, 256, 256, 768, 768, 768, \
+					   768, 0, 0, 0, 0, 0, 0, 0}
+
 /* Gadget ep0 states */
 enum dwc2_ep0_state {
 	DWC2_EP0_SETUP,

drivers/usb/dwc2/gadget.c

···
  */
 static void dwc2_hsotg_init_fifo(struct dwc2_hsotg *hsotg)
 {
-	unsigned int fifo;
+	unsigned int ep;
 	unsigned int addr;
 	int timeout;
-	u32 dptxfsizn;
 	u32 val;
 
 	/* Reset fifo map if not correctly cleared during previous session */
···
 	 * them to endpoints dynamically according to maxpacket size value of
 	 * given endpoint.
 	 */
-	for (fifo = 1; fifo < MAX_EPS_CHANNELS; fifo++) {
-		dptxfsizn = dwc2_readl(hsotg->regs + DPTXFSIZN(fifo));
+	for (ep = 1; ep < MAX_EPS_CHANNELS; ep++) {
+		if (!hsotg->g_tx_fifo_sz[ep])
+			continue;
+		val = addr;
+		val |= hsotg->g_tx_fifo_sz[ep] << FIFOSIZE_DEPTH_SHIFT;
+		WARN_ONCE(addr + hsotg->g_tx_fifo_sz[ep] > hsotg->fifo_mem,
+			  "insufficient fifo memory");
+		addr += hsotg->g_tx_fifo_sz[ep];
 
-		val = (dptxfsizn & FIFOSIZE_DEPTH_MASK) | addr;
-		addr += dptxfsizn >> FIFOSIZE_DEPTH_SHIFT;
-
-		if (addr > hsotg->fifo_mem)
-			break;
-
-		dwc2_writel(val, hsotg->regs + DPTXFSIZN(fifo));
+		dwc2_writel(val, hsotg->regs + DPTXFSIZN(ep));
 	}
 
 	/*
···
 static void dwc2_hsotg_of_probe(struct dwc2_hsotg *hsotg)
 {
 	struct device_node *np = hsotg->dev->of_node;
+	u32 len = 0;
+	u32 i = 0;
 
 	/* Enable dma if requested in device tree */
 	hsotg->g_using_dma = of_property_read_bool(np, "g-use-dma");
 
+	/*
+	* Register TX periodic fifo size per endpoint.
+	* EP0 is excluded since it has no fifo configuration.
+	*/
+	if (!of_find_property(np, "g-tx-fifo-size", &len))
+		goto rx_fifo;
+
+	len /= sizeof(u32);
+
+	/* Read tx fifo sizes other than ep0 */
+	if (of_property_read_u32_array(np, "g-tx-fifo-size",
+						&hsotg->g_tx_fifo_sz[1], len))
+		goto rx_fifo;
+
+	/* Add ep0 */
+	len++;
+
+	/* Make remaining TX fifos unavailable */
+	if (len < MAX_EPS_CHANNELS) {
+		for (i = len; i < MAX_EPS_CHANNELS; i++)
+			hsotg->g_tx_fifo_sz[i] = 0;
+	}
+
+rx_fifo:
 	/* Register RX fifo size */
 	of_property_read_u32(np, "g-rx-fifo-size", &hsotg->g_rx_fifo_sz);
 
···
 	struct device *dev = hsotg->dev;
 	int epnum;
 	int ret;
+	int i;
+	u32 p_tx_fifo[] = DWC2_G_P_LEGACY_TX_FIFO_SIZE;
 
 	/* Initialize to legacy fifo configuration values */
 	hsotg->g_rx_fifo_sz = 2048;
 	hsotg->g_np_g_tx_fifo_sz = 1024;
+	memcpy(&hsotg->g_tx_fifo_sz[1], p_tx_fifo, sizeof(p_tx_fifo));
 	/* Device tree specific probe */
 	dwc2_hsotg_of_probe(hsotg);
 
···
 	dev_dbg(dev, "NonPeriodic TXFIFO size: %d\n",
 						hsotg->g_np_g_tx_fifo_sz);
 	dev_dbg(dev, "RXFIFO size: %d\n", hsotg->g_rx_fifo_sz);
+	for (i = 0; i < MAX_EPS_CHANNELS; i++)
+		dev_dbg(dev, "Periodic TXFIFO%2d size: %d\n", i,
+						hsotg->g_tx_fifo_sz[i]);
 
 	hsotg->gadget.max_speed = USB_SPEED_HIGH;
 	hsotg->gadget.ops = &dwc2_hsotg_gadget_ops;

drivers/usb/dwc3/gadget.c

···
 		req->trb = trb;
 		req->trb_dma = dwc3_trb_dma_offset(dep, trb);
 		req->first_trb_index = dep->trb_enqueue;
+		dep->queued_requests++;
 	}
 
 	dwc3_ep_inc_enq(dep);
···
 		trb->ctrl |= DWC3_TRB_CTRL_SID_SOFN(req->request.stream_id);
 
 	trb->ctrl |= DWC3_TRB_CTRL_HWO;
-
-	dep->queued_requests++;
 
 	trace_dwc3_prepare_trb(dep, trb);
 }
···
 
 	list_add_tail(&req->list, &dep->pending_list);
 
-	if (usb_endpoint_xfer_isoc(dep->endpoint.desc) &&
-			dep->flags & DWC3_EP_PENDING_REQUEST) {
-		if (list_empty(&dep->started_list)) {
+	/*
+	 * NOTICE: Isochronous endpoints should NEVER be prestarted. We must
+	 * wait for a XferNotReady event so we will know what's the current
+	 * (micro-)frame number.
+	 *
+	 * Without this trick, we are very, very likely gonna get Bus Expiry
+	 * errors which will force us issue EndTransfer command.
+	 */
+	if (usb_endpoint_xfer_isoc(dep->endpoint.desc)) {
+		if ((dep->flags & DWC3_EP_PENDING_REQUEST) &&
+				list_empty(&dep->started_list)) {
 			dwc3_stop_active_transfer(dwc, dep->number, true);
 			dep->flags = DWC3_EP_ENABLED;
 		}
···
 	unsigned int		s_pkt = 0;
 	unsigned int		trb_status;
 
-	dep->queued_requests--;
 	dwc3_ep_inc_deq(dep);
+
+	if (req->trb == trb)
+		dep->queued_requests--;
+
 	trace_dwc3_complete_trb(dep, trb);
 
 	/*
···
 	kfree(dwc->setup_buf);
 
 err2:
-	dma_free_coherent(dwc->dev, sizeof(*dwc->ep0_trb),
+	dma_free_coherent(dwc->dev, sizeof(*dwc->ep0_trb) * 2,
 			dwc->ep0_trb, dwc->ep0_trb_addr);
 
 err1:
···
 	kfree(dwc->setup_buf);
 	kfree(dwc->zlp_buf);
 
-	dma_free_coherent(dwc->dev, sizeof(*dwc->ep0_trb),
+	dma_free_coherent(dwc->dev, sizeof(*dwc->ep0_trb) * 2,
 			dwc->ep0_trb, dwc->ep0_trb_addr);
 
 	dma_free_coherent(dwc->dev, sizeof(*dwc->ctrl_req),

drivers/usb/gadget/function/f_fs.c

···
 	/*
 	 * Buffer for holding data from partial reads which may happen since
 	 * we’re rounding user read requests to a multiple of a max packet size.
+	 *
+	 * The pointer is initialised with NULL value and may be set by
+	 * __ffs_epfile_read_data function to point to a temporary buffer.
+	 *
+	 * In normal operation, calls to __ffs_epfile_read_buffered will consume
+	 * data from said buffer and eventually free it.  Importantly, while the
+	 * function is using the buffer, it sets the pointer to NULL.  This is
+	 * all right since __ffs_epfile_read_data and __ffs_epfile_read_buffered
+	 * can never run concurrently (they are synchronised by epfile->mutex)
+	 * so the latter will not assign a new value to the pointer.
+	 *
+	 * Meanwhile ffs_func_eps_disable frees the buffer (if the pointer is
+	 * valid) and sets the pointer to READ_BUFFER_DROP value.  This special
+	 * value is crux of the synchronisation between ffs_func_eps_disable and
+	 * __ffs_epfile_read_data.
+	 *
+	 * Once __ffs_epfile_read_data is about to finish it will try to set the
+	 * pointer back to its old value (as described above), but seeing as the
+	 * pointer is not-NULL (namely READ_BUFFER_DROP) it will instead free
+	 * the buffer.
+	 *
+	 * == State transitions ==
+	 *
+	 * • ptr == NULL:  (initial state)
+	 *   ◦ __ffs_epfile_read_buffer_free: go to ptr == DROP
+	 *   ◦ __ffs_epfile_read_buffered:    nop
+	 *   ◦ __ffs_epfile_read_data allocates temp buffer: go to ptr == buf
+	 *   ◦ reading finishes:              n/a, not in ‘and reading’ state
+	 * • ptr == DROP:
+	 *   ◦ __ffs_epfile_read_buffer_free: nop
+	 *   ◦ __ffs_epfile_read_buffered:    go to ptr == NULL
+	 *   ◦ __ffs_epfile_read_data allocates temp buffer: free buf, nop
+	 *   ◦ reading finishes:              n/a, not in ‘and reading’ state
+	 * • ptr == buf:
+	 *   ◦ __ffs_epfile_read_buffer_free: free buf, go to ptr == DROP
+	 *   ◦ __ffs_epfile_read_buffered:    go to ptr == NULL and reading
+	 *   ◦ __ffs_epfile_read_data:        n/a, __ffs_epfile_read_buffered
+	 *                                    is always called first
+	 *   ◦ reading finishes:              n/a, not in ‘and reading’ state
+	 * • ptr == NULL and reading:
+	 *   ◦ __ffs_epfile_read_buffer_free: go to ptr == DROP and reading
+	 *   ◦ __ffs_epfile_read_buffered:    n/a, mutex is held
+	 *   ◦ __ffs_epfile_read_data:        n/a, mutex is held
+	 *   ◦ reading finishes and …
+	 *     … all data read:               free buf, go to ptr == NULL
+	 *     … otherwise:                   go to ptr == buf and reading
+	 * • ptr == DROP and reading:
+	 *   ◦ __ffs_epfile_read_buffer_free: nop
+	 *   ◦ __ffs_epfile_read_buffered:    n/a, mutex is held
+	 *   ◦ __ffs_epfile_read_data:        n/a, mutex is held
+	 *   ◦ reading finishes:              free buf, go to ptr == DROP
 	 */
-	struct ffs_buffer		*read_buffer;	/* P: epfile->mutex */
+	struct ffs_buffer		*read_buffer;
+#define READ_BUFFER_DROP ((struct ffs_buffer *)ERR_PTR(-ESHUTDOWN))
 
 	char				name[5];
 
···
 	schedule_work(&io_data->work);
 }
 
+static void __ffs_epfile_read_buffer_free(struct ffs_epfile *epfile)
+{
+	/*
+	 * See comment in struct ffs_epfile for full read_buffer pointer
+	 * synchronisation story.
+	 */
+	struct ffs_buffer *buf = xchg(&epfile->read_buffer, READ_BUFFER_DROP);
+	if (buf && buf != READ_BUFFER_DROP)
+		kfree(buf);
+}
+
 /* Assumes epfile->mutex is held. */
 static ssize_t __ffs_epfile_read_buffered(struct ffs_epfile *epfile,
 					  struct iov_iter *iter)
 {
-	struct ffs_buffer *buf = epfile->read_buffer;
+	/*
+	 * Null out epfile->read_buffer so ffs_func_eps_disable does not free
+	 * the buffer while we are using it.  See comment in struct ffs_epfile
+	 * for full read_buffer pointer synchronisation story.
+	 */
+	struct ffs_buffer *buf = xchg(&epfile->read_buffer, NULL);
 	ssize_t ret;
-	if (!buf)
+	if (!buf || buf == READ_BUFFER_DROP)
 		return 0;
 
 	ret = copy_to_iter(buf->data, buf->length, iter);
 	if (buf->length == ret) {
 		kfree(buf);
-		epfile->read_buffer = NULL;
-	} else if (unlikely(iov_iter_count(iter))) {
+		return ret;
+	}
+
+	if (unlikely(iov_iter_count(iter))) {
 		ret = -EFAULT;
 	} else {
 		buf->length -= ret;
 		buf->data += ret;
 	}
+
+	if (cmpxchg(&epfile->read_buffer, NULL, buf))
+		kfree(buf);
+
 	return ret;
 }
 
···
 	buf->length = data_len;
 	buf->data = buf->storage;
 	memcpy(buf->storage, data + ret, data_len);
-	epfile->read_buffer = buf;
+
+	/*
+	 * At this point read_buffer is NULL or READ_BUFFER_DROP (if
+	 * ffs_func_eps_disable has been called in the meanwhile).  See comment
+	 * in struct ffs_epfile for full read_buffer pointer synchronisation
+	 * story.
+	 */
+	if (unlikely(cmpxchg(&epfile->read_buffer, NULL, buf)))
+		kfree(buf);
 
 	return ret;
 }
···
 
 	ENTER();
 
-	kfree(epfile->read_buffer);
-	epfile->read_buffer = NULL;
+	__ffs_epfile_read_buffer_free(epfile);
 	ffs_data_closed(epfile->ffs);
 
 	return 0;
···
 	unsigned count            = func->ffs->eps_count;
 	unsigned long flags;
 
+	spin_lock_irqsave(&func->ffs->eps_lock, flags);
 	do {
-		if (epfile)
-			mutex_lock(&epfile->mutex);
-		spin_lock_irqsave(&func->ffs->eps_lock, flags);
 		/* pending requests get nuked */
 		if (likely(ep->ep))
 			usb_ep_disable(ep->ep);
 		++ep;
-		spin_unlock_irqrestore(&func->ffs->eps_lock, flags);
 
 		if (epfile) {
 			epfile->ep = NULL;
-			kfree(epfile->read_buffer);
-			epfile->read_buffer = NULL;
-			mutex_unlock(&epfile->mutex);
+			__ffs_epfile_read_buffer_free(epfile);
 			++epfile;
 		}
 	} while (--count);
+	spin_unlock_irqrestore(&func->ffs->eps_lock, flags);
 }
 
 static int ffs_func_eps_enable(struct ffs_function *func)

drivers/usb/gadget/function/u_ether.c

···
 
 	/* throttle high/super speed IRQ rate back slightly */
 	if (gadget_is_dualspeed(dev->gadget))
-		req->no_interrupt = (dev->gadget->speed == USB_SPEED_HIGH ||
-				     dev->gadget->speed == USB_SPEED_SUPER)
+		req->no_interrupt = (((dev->gadget->speed == USB_SPEED_HIGH ||
+				       dev->gadget->speed == USB_SPEED_SUPER)) &&
+					!list_empty(&dev->tx_reqs))
 			? ((atomic_read(&dev->tx_qlen) % dev->qmult) != 0)
 			: 0;
 

drivers/usb/gadget/udc/atmel_usba_udc.c

···
 			dev_err(&pdev->dev, "of_probe: name error(%d)\n", ret);
 			goto err;
 		}
-		ep->ep.name = name;
+		ep->ep.name = kasprintf(GFP_KERNEL, "ep%d", ep->index);
 
 		ep->ep_regs = udc->regs + USBA_EPT_BASE(i);
 		ep->dma_regs = udc->regs + USBA_DMA_BASE(i);

drivers/usb/host/ehci-platform.c

···
 
 #define DRIVER_DESC "EHCI generic platform driver"
 #define EHCI_MAX_CLKS 4
-#define EHCI_MAX_RSTS 3
+#define EHCI_MAX_RSTS 4
 #define hcd_to_ehci_priv(h) ((struct ehci_platform_priv *)hcd_to_ehci(h)->priv)
 
 struct ehci_platform_priv {

drivers/usb/host/ohci-at91.c

···
 	ohci->num_ports = board->ports;
 	at91_start_hc(pdev);
 
+	/*
+	 * The RemoteWakeupConnected bit has to be set explicitly
+	 * before calling ohci_run. The reset value of this bit is 0.
+	 */
+	ohci->hc_control = OHCI_CTRL_RWC;
+
 	retval = usb_add_hcd(hcd, irq, IRQF_SHARED);
 	if (retval == 0) {
 		device_wakeup_enable(hcd->self.controller);
···
 	 * REVISIT: some boards will be able to turn VBUS off...
 	 */
 	if (!ohci_at91->wakeup) {
-		ohci->hc_control = ohci_readl(ohci, &ohci->regs->control);
-		ohci->hc_control &= OHCI_CTRL_RWC;
-		ohci_writel(ohci, ohci->hc_control, &ohci->regs->control);
 		ohci->rh_state = OHCI_RH_HALTED;
 
 		/* flush the writes */

drivers/usb/host/ohci-hcd.c

···
 static const char	hcd_name [] = "ohci_hcd";
 
 #define	STATECHANGE_DELAY	msecs_to_jiffies(300)
-#define	IO_WATCHDOG_DELAY	msecs_to_jiffies(250)
+#define	IO_WATCHDOG_DELAY	msecs_to_jiffies(275)
 
 #include "ohci.h"
 #include "pci-quirks.h"

drivers/usb/host/xhci-hub.c

···
 				xhci_set_link_state(xhci, port_array, wIndex,
 							XDEV_RESUME);
 				spin_unlock_irqrestore(&xhci->lock, flags);
-				msleep(20);
+				msleep(USB_RESUME_TIMEOUT);
 				spin_lock_irqsave(&xhci->lock, flags);
 				xhci_set_link_state(xhci, port_array, wIndex,
 							XDEV_U0);
···
 	return 0;
 }
 
+/*
+ * Workaround for missing Cold Attach Status (CAS) if device re-plugged in S3.
+ * warm reset a USB3 device stuck in polling or compliance mode after resume.
+ * See Intel 100/c230 series PCH specification update Doc #332692-006 Errata #8
+ */
+static bool xhci_port_missing_cas_quirk(int port_index,
+					     __le32 __iomem **port_array)
+{
+	u32 portsc;
+
+	portsc = readl(port_array[port_index]);
+
+	/* if any of these are set we are not stuck */
+	if (portsc & (PORT_CONNECT | PORT_CAS))
+		return false;
+
+	if (((portsc & PORT_PLS_MASK) != XDEV_POLLING) &&
+	    ((portsc & PORT_PLS_MASK) != XDEV_COMP_MODE))
+		return false;
+
+	/* clear wakeup/change bits, and do a warm port reset */
+	portsc &= ~(PORT_RWC_BITS | PORT_CEC | PORT_WAKE_BITS);
+	portsc |= PORT_WR;
+	writel(portsc, port_array[port_index]);
+	/* flush write */
+	readl(port_array[port_index]);
+	return true;
+}
+
 int xhci_bus_resume(struct usb_hcd *hcd)
 {
 	struct xhci_hcd	*xhci = hcd_to_xhci(hcd);
···
 		u32 temp;
 
 		temp = readl(port_array[port_index]);
+
+		/* warm reset CAS limited ports stuck in polling/compliance */
+		if ((xhci->quirks & XHCI_MISSING_CAS) &&
+		    (hcd->speed >= HCD_USB3) &&
+		    xhci_port_missing_cas_quirk(port_index, port_array)) {
+			xhci_dbg(xhci, "reset stuck port %d\n", port_index);
+			continue;
+		}
 		if (DEV_SUPERSPEED_ANY(temp))
 			temp &= ~(PORT_RWC_BITS | PORT_CEC | PORT_WAKE_BITS);
 		else
···
 
 	if (need_usb2_u3_exit) {
 		spin_unlock_irqrestore(&xhci->lock, flags);
-		msleep(20);
+		msleep(USB_RESUME_TIMEOUT);
 		spin_lock_irqsave(&xhci->lock, flags);
 	}
 

drivers/usb/host/xhci-pci.c

···
 
 #define PCI_DEVICE_ID_INTEL_LYNXPOINT_XHCI	0x8c31
 #define PCI_DEVICE_ID_INTEL_LYNXPOINT_LP_XHCI	0x9c31
+#define PCI_DEVICE_ID_INTEL_WILDCATPOINT_LP_XHCI	0x9cb1
 #define PCI_DEVICE_ID_INTEL_CHERRYVIEW_XHCI		0x22b5
 #define PCI_DEVICE_ID_INTEL_SUNRISEPOINT_H_XHCI		0xa12f
 #define PCI_DEVICE_ID_INTEL_SUNRISEPOINT_LP_XHCI	0x9d2f
 #define PCI_DEVICE_ID_INTEL_BROXTON_M_XHCI		0x0aa8
 #define PCI_DEVICE_ID_INTEL_BROXTON_B_XHCI		0x1aa8
+#define PCI_DEVICE_ID_INTEL_APL_XHCI			0x5aa8
 
 static const char hcd_name[] = "xhci_hcd";
 
···
 		xhci->quirks |= XHCI_SPURIOUS_REBOOT;
 	}
 	if (pdev->vendor == PCI_VENDOR_ID_INTEL &&
-		pdev->device == PCI_DEVICE_ID_INTEL_LYNXPOINT_LP_XHCI) {
+		(pdev->device == PCI_DEVICE_ID_INTEL_LYNXPOINT_LP_XHCI ||
+		 pdev->device == PCI_DEVICE_ID_INTEL_WILDCATPOINT_LP_XHCI)) {
 		xhci->quirks |= XHCI_SPURIOUS_REBOOT;
 		xhci->quirks |= XHCI_SPURIOUS_WAKEUP;
 	}
···
 		 pdev->device == PCI_DEVICE_ID_INTEL_CHERRYVIEW_XHCI) {
 		xhci->quirks |= XHCI_SSIC_PORT_UNUSED;
 	}
+	if (pdev->vendor == PCI_VENDOR_ID_INTEL &&
+	    (pdev->device == PCI_DEVICE_ID_INTEL_CHERRYVIEW_XHCI ||
+	     pdev->device == PCI_DEVICE_ID_INTEL_APL_XHCI))
+		xhci->quirks |= XHCI_MISSING_CAS;
+
 	if (pdev->vendor == PCI_VENDOR_ID_ETRON &&
 			pdev->device == PCI_DEVICE_ID_EJ168) {
 		xhci->quirks |= XHCI_RESET_ON_RESUME;

drivers/usb/host/xhci.h

···
 #define XDEV_U2		(0x2 << 5)
 #define XDEV_U3		(0x3 << 5)
 #define XDEV_INACTIVE	(0x6 << 5)
+#define XDEV_POLLING	(0x7 << 5)
+#define XDEV_COMP_MODE  (0xa << 5)
 #define XDEV_RESUME	(0xf << 5)
 /* true: port has power (see HCC_PPC) */
 #define PORT_POWER	(1 << 9)
···
 #define XHCI_MTK_HOST		(1 << 21)
 #define XHCI_SSIC_PORT_UNUSED	(1 << 22)
 #define XHCI_NO_64BIT_SUPPORT	(1 << 23)
+#define XHCI_MISSING_CAS	(1 << 24)
 	unsigned int		num_active_eps;
 	unsigned int		limit_active_eps;
 	/* There are two roothubs to keep track of bus suspend info for */

drivers/usb/musb/musb_gadget.c

···
 
 	map_dma_buffer(request, musb, musb_ep);
 
+	pm_runtime_get_sync(musb->controller);
 	spin_lock_irqsave(&musb->lock, lockflags);
 
 	/* don't queue if the ep is down */
···
 
 unlock:
 	spin_unlock_irqrestore(&musb->lock, lockflags);
+	pm_runtime_mark_last_busy(musb->controller);
+	pm_runtime_put_autosuspend(musb->controller);
+
 	return status;
 }
 

drivers/usb/musb/omap2430.c

···
 	}
 	musb->isr = omap2430_musb_interrupt;
 	phy_init(musb->phy);
+	phy_power_on(musb->phy);
 
 	l = musb_readl(musb->mregs, OTG_INTERFSEL);
 
···
 	struct musb_hdrc_platform_data *pdata = dev_get_platdata(dev);
 	struct omap_musb_board_data *data = pdata->board_data;
 
-	if (!WARN_ON(!musb->phy))
-		phy_power_on(musb->phy);
 
 	switch (glue->status) {
 
···
 	struct device *dev = musb->controller;
 	struct omap2430_glue *glue = dev_get_drvdata(dev->parent);
 
-	if (!WARN_ON(!musb->phy))
-		phy_power_off(musb->phy);
-
 	if (glue->status != MUSB_UNKNOWN)
 		omap_control_usb_set_mode(glue->control_otghs,
 			USB_MODE_DISCONNECT);
···
 	struct omap2430_glue *glue = dev_get_drvdata(dev->parent);
 
 	omap2430_low_level_exit(musb);
+	phy_power_off(musb->phy);
 	phy_exit(musb->phy);
 	musb->phy = NULL;
 	cancel_work_sync(&glue->omap_musb_mailbox_work);

drivers/usb/renesas_usbhs/rcar3.c

···
  *
  */
 
+#include <linux/delay.h>
 #include <linux/io.h>
 #include "common.h"
 #include "rcar3.h"
···
 
 	usbhs_write32(priv, UGCTRL2, UGCTRL2_RESERVED_3 | UGCTRL2_USB0SEL_OTG);
 
-	if (enable)
+	if (enable) {
 		usbhs_bset(priv, LPSTS, LPSTS_SUSPM, LPSTS_SUSPM);
-	else
+		/* The controller on R-Car Gen3 needs to wait up to 45 usec */
+		udelay(45);
+	} else {
 		usbhs_bset(priv, LPSTS, LPSTS_SUSPM, 0);
+	}
 
 	return 0;
 }

drivers/usb/serial/cp210x.c

···
 	u8 control;
 	int result;
 
-	cp210x_read_u8_reg(port, CP210X_GET_MDMSTS, &control);
+	result = cp210x_read_u8_reg(port, CP210X_GET_MDMSTS, &control);
+	if (result)
+		return result;
 
 	result = ((control & CONTROL_DTR) ? TIOCM_DTR : 0)
 		|((control & CONTROL_RTS) ? TIOCM_RTS : 0)

drivers/usb/serial/ftdi_sio.c

···
 	/* ekey Devices */
 	{ USB_DEVICE(FTDI_VID, FTDI_EKEY_CONV_USB_PID) },
 	/* Infineon Devices */
-	{ USB_DEVICE_INTERFACE_NUMBER(INFINEON_VID, INFINEON_TRIBOARD_PID, 1) },
+	{ USB_DEVICE_INTERFACE_NUMBER(INFINEON_VID, INFINEON_TRIBOARD_TC1798_PID, 1) },
+	{ USB_DEVICE_INTERFACE_NUMBER(INFINEON_VID, INFINEON_TRIBOARD_TC2X7_PID, 1) },
 	/* GE Healthcare devices */
 	{ USB_DEVICE(GE_HEALTHCARE_VID, GE_HEALTHCARE_NEMO_TRACKER_PID) },
 	/* Active Research (Actisense) devices */

drivers/usb/serial/ftdi_sio_ids.h

···
 /*
  * Infineon Technologies
  */
-#define INFINEON_VID		0x058b
-#define INFINEON_TRIBOARD_PID	0x0028 /* DAS JTAG TriBoard TC1798 V1.0 */
+#define INFINEON_VID		        0x058b
+#define INFINEON_TRIBOARD_TC1798_PID	0x0028 /* DAS JTAG TriBoard TC1798 V1.0 */
+#define INFINEON_TRIBOARD_TC2X7_PID	0x0043 /* DAS JTAG TriBoard TC2X7 V1.0 */
 
 /*
  * Acton Research Corp.

drivers/usb/serial/usb-serial.c

···
 
 	serial->disconnected = 0;
 
-	usb_serial_console_init(serial->port[0]->minor);
+	if (num_ports > 0)
+		usb_serial_console_init(serial->port[0]->minor);
 exit:
 	module_put(type->driver.owner);
 	return 0;

drivers/usb/wusbcore/crypto.c

···
 		bo[itr] = bi1[itr] ^ bi2[itr];
 }
 
+/* Scratch space for MAC calculations. */
+struct wusb_mac_scratch {
+	struct aes_ccm_b0 b0;
+	struct aes_ccm_b1 b1;
+	struct aes_ccm_a ax;
+};
+
 /*
  * CC-MAC function WUSB1.0[6.5]
  *
···
  *       what sg[4] is for. Maybe there is a smarter way to do this.
  */
 static int wusb_ccm_mac(struct crypto_skcipher *tfm_cbc,
-			struct crypto_cipher *tfm_aes, void *mic,
+			struct crypto_cipher *tfm_aes,
+			struct wusb_mac_scratch *scratch,
+			void *mic,
 			const struct aes_ccm_nonce *n,
 			const struct aes_ccm_label *a, const void *b,
 			size_t blen)
 {
 	int result = 0;
 	SKCIPHER_REQUEST_ON_STACK(req, tfm_cbc);
-	struct aes_ccm_b0 b0;
-	struct aes_ccm_b1 b1;
-	struct aes_ccm_a ax;
 	struct scatterlist sg[4], sg_dst;
 	void *dst_buf;
 	size_t dst_size;
···
 	 * These checks should be compile time optimized out
 	 * ensure @a fills b1's mac_header and following fields
 	 */
-	WARN_ON(sizeof(*a) != sizeof(b1) - sizeof(b1.la));
-	WARN_ON(sizeof(b0) != sizeof(struct aes_ccm_block));
-	WARN_ON(sizeof(b1) != sizeof(struct aes_ccm_block));
-	WARN_ON(sizeof(ax) != sizeof(struct aes_ccm_block));
+	WARN_ON(sizeof(*a) != sizeof(scratch->b1) - sizeof(scratch->b1.la));
+	WARN_ON(sizeof(scratch->b0) != sizeof(struct aes_ccm_block));
+	WARN_ON(sizeof(scratch->b1) != sizeof(struct aes_ccm_block));
+	WARN_ON(sizeof(scratch->ax) != sizeof(struct aes_ccm_block));
 
 	result = -ENOMEM;
 	zero_padding = blen % sizeof(struct aes_ccm_block);
 	if (zero_padding)
 		zero_padding = sizeof(struct aes_ccm_block) - zero_padding;
-	dst_size = blen + sizeof(b0) + sizeof(b1) + zero_padding;
+	dst_size = blen + sizeof(scratch->b0) + sizeof(scratch->b1) +
+		zero_padding;
 	dst_buf = kzalloc(dst_size, GFP_KERNEL);
 	if (!dst_buf)
 		goto error_dst_buf;
···
 	memset(iv, 0, sizeof(iv));
 
 	/* Setup B0 */
-	b0.flags = 0x59;	/* Format B0 */
-	b0.ccm_nonce = *n;
-	b0.lm = cpu_to_be16(0);	/* WUSB1.0[6.5] sez l(m) is 0 */
+	scratch->b0.flags = 0x59;	/* Format B0 */
+	scratch->b0.ccm_nonce = *n;
+	scratch->b0.lm = cpu_to_be16(0);	/* WUSB1.0[6.5] sez l(m) is 0 */
 
 	/* Setup B1
 	 *
···
 	 * 14'--after clarification, it means to use A's contents
 	 * for MAC Header, EO, sec reserved and padding.
 	 */
-	b1.la = cpu_to_be16(blen + 14);
-	memcpy(&b1.mac_header, a, sizeof(*a));
+	scratch->b1.la = cpu_to_be16(blen + 14);
+	memcpy(&scratch->b1.mac_header, a, sizeof(*a));
 
 	sg_init_table(sg, ARRAY_SIZE(sg));
-	sg_set_buf(&sg[0], &b0, sizeof(b0));
-	sg_set_buf(&sg[1], &b1, sizeof(b1));
+	sg_set_buf(&sg[0], &scratch->b0, sizeof(scratch->b0));
+	sg_set_buf(&sg[1], &scratch->b1, sizeof(scratch->b1));
 	sg_set_buf(&sg[2], b, blen);
 	/* 0 if well behaved :) */
 	sg_set_buf(&sg[3], bzero, zero_padding);
···
 	 * POS Crypto API: size is assumed to be AES's block size.
 	 * Thanks for documenting it -- tip taken from airo.c
 	 */
-	ax.flags = 0x01;		/* as per WUSB 1.0 spec */
-	ax.ccm_nonce = *n;
-	ax.counter = 0;
-	crypto_cipher_encrypt_one(tfm_aes, (void *)&ax, (void *)&ax);
-	bytewise_xor(mic, &ax, iv, 8);
+	scratch->ax.flags = 0x01;		/* as per WUSB 1.0 spec */
+	scratch->ax.ccm_nonce = *n;
+	scratch->ax.counter = 0;
+	crypto_cipher_encrypt_one(tfm_aes, (void *)&scratch->ax,
+				  (void *)&scratch->ax);
+	bytewise_xor(mic, &scratch->ax, iv, 8);
 	result = 8;
 error_cbc_crypt:
 	kfree(dst_buf);
···
 	struct aes_ccm_nonce n = *_n;
 	struct crypto_skcipher *tfm_cbc;
 	struct crypto_cipher *tfm_aes;
+	struct wusb_mac_scratch *scratch;
 	u64 sfn = 0;
 	__le64 sfn_le;
 
···
 		printk(KERN_ERR "E: can't set AES key: %d\n", (int)result);
 		goto error_setkey_aes;
 	}
+	scratch = kmalloc(sizeof(*scratch), GFP_KERNEL);
+	if (!scratch) {
+		result = -ENOMEM;
+		goto error_alloc_scratch;
+	}
 
 	for (bitr = 0; bitr < (len + 63) / 64; bitr++) {
 		sfn_le = cpu_to_le64(sfn++);
 		memcpy(&n.sfn, &sfn_le, sizeof(n.sfn));	/* n.sfn++... */
-		result = wusb_ccm_mac(tfm_cbc, tfm_aes, out + bytes,
+		result = wusb_ccm_mac(tfm_cbc, tfm_aes, scratch, out + bytes,
 				      &n, a, b, blen);
 		if (result < 0)
 			goto error_ccm_mac;
 		bytes += result;
 	}
 	result = bytes;
+
+	kfree(scratch);
+error_alloc_scratch:
 error_ccm_mac:
 error_setkey_aes:
 	crypto_free_cipher(tfm_aes);

drivers/vme/vme.c

···
 	case VME_MASTER:
 		retval = vme_master_get(resource, &enabled, &base, &size,
 			&aspace, &cycle, &dwidth);
+		if (retval)
+			return 0;
 
 		return size;
 		break;
 	case VME_SLAVE:
 		retval = vme_slave_get(resource, &enabled, &base, &size,
 			&buf_base, &aspace, &cycle);
+		if (retval)
+			return 0;
 
 		return size;
 		break;

drivers/xen/manage.c

···
 #endif	/* CONFIG_HIBERNATE_CALLBACKS */
 
 struct shutdown_handler {
-	const char *command;
+#define SHUTDOWN_CMD_SIZE 11
+	const char command[SHUTDOWN_CMD_SIZE];
+	bool flag;
 	void (*cb)(void);
 };
 
···
 	ctrl_alt_del();
 }
 
+static struct shutdown_handler shutdown_handlers[] = {
+	{ "poweroff",	true,	do_poweroff },
+	{ "halt",	false,	do_poweroff },
+	{ "reboot",	true,	do_reboot   },
+#ifdef CONFIG_HIBERNATE_CALLBACKS
+	{ "suspend",	true,	do_suspend  },
+#endif
+};
+
 static void shutdown_handler(struct xenbus_watch *watch,
 			     const char **vec, unsigned int len)
 {
 	char *str;
 	struct xenbus_transaction xbt;
 	int err;
-	static struct shutdown_handler handlers[] = {
-		{ "poweroff",	do_poweroff },
-		{ "halt",	do_poweroff },
-		{ "reboot",	do_reboot   },
-#ifdef CONFIG_HIBERNATE_CALLBACKS
-		{ "suspend",	do_suspend  },
-#endif
-		{NULL, NULL},
-	};
-	static struct shutdown_handler *handler;
+	int idx;
 
 	if (shutting_down != SHUTDOWN_INVALID)
 		return;
···
 		return;
 	}
 
-	for (handler = &handlers[0]; handler->command; handler++) {
-		if (strcmp(str, handler->command) == 0)
+	for (idx = 0; idx < ARRAY_SIZE(shutdown_handlers); idx++) {
+		if (strcmp(str, shutdown_handlers[idx].command) == 0)
 			break;
 	}
 
 	/* Only acknowledge commands which we are prepared to handle. */
-	if (handler->cb)
+	if (idx < ARRAY_SIZE(shutdown_handlers))
 		xenbus_write(xbt, "control", "shutdown", "");
 
 	err = xenbus_transaction_end(xbt, 0);
···
 		goto again;
 	}
 
-	if (handler->cb) {
-		handler->cb();
+	if (idx < ARRAY_SIZE(shutdown_handlers)) {
+		shutdown_handlers[idx].cb();
 	} else {
 		pr_info("Ignoring shutdown request: %s\n", str);
 		shutting_down = SHUTDOWN_INVALID;
···
 static int setup_shutdown_watcher(void)
 {
 	int err;
+	int idx;
+#define FEATURE_PATH_SIZE (SHUTDOWN_CMD_SIZE + sizeof("feature-"))
+	char node[FEATURE_PATH_SIZE];
 
 	err = register_xenbus_watch(&shutdown_watch);
 	if (err) {
···
 		return err;
 	}
 #endif
+
+	for (idx = 0; idx < ARRAY_SIZE(shutdown_handlers); idx++) {
+		if (!shutdown_handlers[idx].flag)
+			continue;
+		snprintf(node, FEATURE_PATH_SIZE, "feature-%s",
+			 shutdown_handlers[idx].command);
+		xenbus_printf(XBT_NIL, "control", node, "%u", 1);
+	}
 
 	return 0;
 }

drivers/xen/xenbus/xenbus_dev_frontend.c

···
 
 static int xenbus_write_watch(unsigned msg_type, struct xenbus_file_priv *u)
 {
-	struct watch_adapter *watch, *tmp_watch;
+	struct watch_adapter *watch;
 	char *path, *token;
 	int err, rc;
 	LIST_HEAD(staging_q);
···
 		}
 		list_add(&watch->list, &u->watches);
 	} else {
-		list_for_each_entry_safe(watch, tmp_watch, &u->watches, list) {
+		list_for_each_entry(watch, &u->watches, list) {
 			if (!strcmp(watch->token, token) &&
 			    !strcmp(watch->watch.node, path)) {
 				unregister_xenbus_watch(&watch->watch);

drivers/xen/xenbus/xenbus_probe_frontend.c

···
 static void xenbus_reset_backend_state_changed(struct xenbus_watch *w,
 					const char **v, unsigned int l)
 {
-	xenbus_scanf(XBT_NIL, v[XS_WATCH_PATH], "", "%i", &backend_state);
+	if (xenbus_scanf(XBT_NIL, v[XS_WATCH_PATH], "", "%i",
+			 &backend_state) != 1)
+		backend_state = XenbusStateUnknown;
 	printk(KERN_DEBUG "XENBUS: backend %s %s\n",
 			v[XS_WATCH_PATH], xenbus_strstate(backend_state));
 	wake_up(&backend_state_wq);

fs/btrfs/send.c

···
 	int ret = 0;
 
 	if (sctx->cur_ino != sctx->cmp_key->objectid) {
+
+		if (result == BTRFS_COMPARE_TREE_CHANGED) {
+			struct extent_buffer *leaf_l;
+			struct extent_buffer *leaf_r;
+			struct btrfs_file_extent_item *ei_l;
+			struct btrfs_file_extent_item *ei_r;
+
+			leaf_l = sctx->left_path->nodes[0];
+			leaf_r = sctx->right_path->nodes[0];
+			ei_l = btrfs_item_ptr(leaf_l,
+					      sctx->left_path->slots[0],
+					      struct btrfs_file_extent_item);
+			ei_r = btrfs_item_ptr(leaf_r,
+					      sctx->right_path->slots[0],
+					      struct btrfs_file_extent_item);
+
+			/*
+			 * We may have found an extent item that has changed
+			 * only its disk_bytenr field and the corresponding
+			 * inode item was not updated. This case happens due to
+			 * very specific timings during relocation when a leaf
+			 * that contains file extent items is COWed while
+			 * relocation is ongoing and its in the stage where it
+			 * updates data pointers. So when this happens we can
+			 * safely ignore it since we know it's the same extent,
+			 * but just at different logical and physical locations
+			 * (when an extent is fully replaced with a new one, we
+			 * know the generation number must have changed too,
+			 * since snapshot creation implies committing the current
+			 * transaction, and the inode item must have been updated
+			 * as well).
+			 * This replacement of the disk_bytenr happens at
+			 * relocation.c:replace_file_extents() through
+			 * relocation.c:btrfs_reloc_cow_block().
+			 */
+			if (btrfs_file_extent_generation(leaf_l, ei_l) ==
+			    btrfs_file_extent_generation(leaf_r, ei_r) &&
+			    btrfs_file_extent_ram_bytes(leaf_l, ei_l) ==
+			    btrfs_file_extent_ram_bytes(leaf_r, ei_r) &&
+			    btrfs_file_extent_compression(leaf_l, ei_l) ==
+			    btrfs_file_extent_compression(leaf_r, ei_r) &&
+			    btrfs_file_extent_encryption(leaf_l, ei_l) ==
+			    btrfs_file_extent_encryption(leaf_r, ei_r) &&
+			    btrfs_file_extent_other_encoding(leaf_l, ei_l) ==
+			    btrfs_file_extent_other_encoding(leaf_r, ei_r) &&
+			    btrfs_file_extent_type(leaf_l, ei_l) ==
+			    btrfs_file_extent_type(leaf_r, ei_r) &&
+			    btrfs_file_extent_disk_bytenr(leaf_l, ei_l) !=
+			    btrfs_file_extent_disk_bytenr(leaf_r, ei_r) &&
+			    btrfs_file_extent_disk_num_bytes(leaf_l, ei_l) ==
+			    btrfs_file_extent_disk_num_bytes(leaf_r, ei_r) &&
+			    btrfs_file_extent_offset(leaf_l, ei_l) ==
+			    btrfs_file_extent_offset(leaf_r, ei_r) &&
+			    btrfs_file_extent_num_bytes(leaf_l, ei_l) ==
+			    btrfs_file_extent_num_bytes(leaf_r, ei_r))
+				return 0;
+		}
+
 		inconsistent_snapshot_error(sctx, result, "extent");
 		return -EIO;
 	}

fs/btrfs/tree-log.c

···
 					     int index, int error)
 {
 	struct btrfs_log_ctx *ctx;
+	struct btrfs_log_ctx *safe;
 
-	if (!error) {
-		INIT_LIST_HEAD(&root->log_ctxs[index]);
-		return;
-	}
-
-	list_for_each_entry(ctx, &root->log_ctxs[index], list)
+	list_for_each_entry_safe(ctx, safe, &root->log_ctxs[index], list) {
+		list_del_init(&ctx->list);
 		ctx->log_ret = error;
+	}
 
 	INIT_LIST_HEAD(&root->log_ctxs[index]);
 }
···
 	mutex_unlock(&root->log_mutex);
 
 out_wake_log_root:
-	/*
-	 * We needn't get log_mutex here because we are sure all
-	 * the other tasks are blocked.
-	 */
+	mutex_lock(&log_root_tree->log_mutex);
 	btrfs_remove_all_log_ctxs(log_root_tree, index2, ret);
 
-	mutex_lock(&log_root_tree->log_mutex);
 	log_root_tree->log_transid_committed++;
 	atomic_set(&log_root_tree->log_commit[index2], 0);
 	mutex_unlock(&log_root_tree->log_mutex);
···
 	if (waitqueue_active(&log_root_tree->log_commit_wait[index2]))
 		wake_up(&log_root_tree->log_commit_wait[index2]);
 out:
-	/* See above. */
-	btrfs_remove_all_log_ctxs(root, index1, ret);
-
 	mutex_lock(&root->log_mutex);
+	btrfs_remove_all_log_ctxs(root, index1, ret);
 	root->log_transid_committed++;
 	atomic_set(&root->log_commit[index1], 0);
 	mutex_unlock(&root->log_mutex);

fs/exofs/dir.c

···
 bad_entry:
 	EXOFS_ERR(
 		"ERROR [exofs_check_page]: bad entry in directory(0x%lx): %s - "
-		"offset=%lu, inode=0x%llu, rec_len=%d, name_len=%d\n",
+		"offset=%lu, inode=0x%llx, rec_len=%d, name_len=%d\n",
 		dir->i_ino, error, (page->index<<PAGE_SHIFT)+offs,
 		_LLU(le64_to_cpu(p->inode_no)),
 		rec_len, p->name_len);

fs/iomap.c

···
 	struct page *page = data;
 	int ret;
 
-	ret = __block_write_begin_int(page, pos & ~PAGE_MASK, length,
-			NULL, iomap);
+	ret = __block_write_begin_int(page, pos, length, NULL, iomap);
 	if (ret)
 		return ret;
 
···
 	}
 
 	while (len > 0) {
-		ret = iomap_apply(inode, start, len, 0, ops, &ctx,
+		ret = iomap_apply(inode, start, len, IOMAP_REPORT, ops, &ctx,
 				iomap_fiemap_actor);
 		/* inode with no (attribute) mapping will give ENOENT */
 		if (ret == -ENOENT)

fs/kernfs/file.c

···
 	.open		= kernfs_fop_open,
 	.release	= kernfs_fop_release,
 	.poll		= kernfs_fop_poll,
+	.fsync		= noop_fsync,
 };
 
 /**

fs/orangefs/dcache.c

···
 		}
 	}
 
-	dentry->d_time = jiffies + orangefs_dcache_timeout_msecs*HZ/1000;
+	orangefs_set_timeout(dentry);
 	ret = 1;
 out_release_op:
 	op_release(new_op);
···
 static int orangefs_d_revalidate(struct dentry *dentry, unsigned int flags)
 {
 	int ret;
+	unsigned long time = (unsigned long) dentry->d_fsdata;
 
-	if (time_before(jiffies, dentry->d_time))
+	if (time_before(jiffies, time))
 		return 1;
 
 	if (flags & LOOKUP_RCU)

fs/orangefs/file.c

···
 	 * readahead cache (if any); this forces an expensive refresh of
 	 * data for the next caller of mmap (or 'get_block' accesses)
 	 */
-	if (file->f_path.dentry->d_inode &&
-	    file->f_path.dentry->d_inode->i_mapping &&
-	    mapping_nrpages(&file->f_path.dentry->d_inode->i_data)) {
+	if (file_inode(file) &&
+	    file_inode(file)->i_mapping &&
+	    mapping_nrpages(&file_inode(file)->i_data)) {
 		if (orangefs_features & ORANGEFS_FEATURE_READAHEAD) {
 			gossip_debug(GOSSIP_INODE_DEBUG,
 			    "calling flush_racache on %pU\n",
···
 			gossip_debug(GOSSIP_INODE_DEBUG,
 			    "flush_racache finished\n");
 		}
-		truncate_inode_pages(file->f_path.dentry->d_inode->i_mapping,
+		truncate_inode_pages(file_inode(file)->i_mapping,
 				     0);
 	}
 	return 0;
···
 {
 	int ret = -EINVAL;
 	struct orangefs_inode_s *orangefs_inode =
-		ORANGEFS_I(file->f_path.dentry->d_inode);
+		ORANGEFS_I(file_inode(file));
 	struct orangefs_kernel_op_s *new_op = NULL;
 
 	/* required call */
···
 
 	ret = service_operation(new_op,
 			"orangefs_fsync",
-			get_interruptible_flag(file->f_path.dentry->d_inode));
+			get_interruptible_flag(file_inode(file)));
 
 	gossip_debug(GOSSIP_FILE_DEBUG,
 		     "orangefs_fsync got return value of %d\n",
···
 
 	op_release(new_op);
 
-	orangefs_flush_inode(file->f_path.dentry->d_inode);
+	orangefs_flush_inode(file_inode(file));
 	return ret;
 }
 

fs/orangefs/namei.c

···
 
 	d_instantiate(dentry, inode);
 	unlock_new_inode(inode);
-	dentry->d_time = jiffies + orangefs_dcache_timeout_msecs*HZ/1000;
+	orangefs_set_timeout(dentry);
 	ORANGEFS_I(inode)->getattr_time = jiffies - 1;
 
 	gossip_debug(GOSSIP_NAME_DEBUG,
···
 		goto out;
 	}
 
-	dentry->d_time = jiffies + orangefs_dcache_timeout_msecs*HZ/1000;
+	orangefs_set_timeout(dentry);
 
 	inode = orangefs_iget(dir->i_sb, &new_op->downcall.resp.lookup.refn);
 	if (IS_ERR(inode)) {
···
 
 	d_instantiate(dentry, inode);
 	unlock_new_inode(inode);
-	dentry->d_time = jiffies + orangefs_dcache_timeout_msecs*HZ/1000;
+	orangefs_set_timeout(dentry);
 	ORANGEFS_I(inode)->getattr_time = jiffies - 1;
 
 	gossip_debug(GOSSIP_NAME_DEBUG,
···
 
 	d_instantiate(dentry, inode);
 	unlock_new_inode(inode);
-	dentry->d_time = jiffies + orangefs_dcache_timeout_msecs*HZ/1000;
+	orangefs_set_timeout(dentry);
 	ORANGEFS_I(inode)->getattr_time = jiffies - 1;
 
 	gossip_debug(GOSSIP_NAME_DEBUG,

fs/orangefs/orangefs-kernel.h

···
 #endif
 }
 
+static inline void orangefs_set_timeout(struct dentry *dentry)
+{
+	unsigned long time = jiffies + orangefs_dcache_timeout_msecs*HZ/1000;
+
+	dentry->d_fsdata = (void *) time;
+}
+
 #endif /* __ORANGEFSKERNEL_H */

fs/proc/base.c

···
 	 * Inherently racy -- command line shares address space
 	 * with code and data.
 	 */
-	rv = access_remote_vm(mm, arg_end - 1, &c, 1, FOLL_FORCE);
+	rv = access_remote_vm(mm, arg_end - 1, &c, 1, 0);
 	if (rv <= 0)
 		goto out_free_page;
 
···
 			int nr_read;
 
 			_count = min3(count, len, PAGE_SIZE);
-			nr_read = access_remote_vm(mm, p, page, _count,
-					FOLL_FORCE);
+			nr_read = access_remote_vm(mm, p, page, _count, 0);
 			if (nr_read < 0)
 				rv = nr_read;
 			if (nr_read <= 0)
···
 			bool final;
 
 			_count = min3(count, len, PAGE_SIZE);
-			nr_read = access_remote_vm(mm, p, page, _count,
-					FOLL_FORCE);
+			nr_read = access_remote_vm(mm, p, page, _count, 0);
 			if (nr_read < 0)
 				rv = nr_read;
 			if (nr_read <= 0)
···
 			bool final;
 
 			_count = min3(count, len, PAGE_SIZE);
-			nr_read = access_remote_vm(mm, p, page, _count,
-					FOLL_FORCE);
+			nr_read = access_remote_vm(mm, p, page, _count, 0);
 			if (nr_read < 0)
 				rv = nr_read;
 			if (nr_read <= 0)
···
 	unsigned long addr = *ppos;
 	ssize_t copied;
 	char *page;
-	unsigned int flags = FOLL_FORCE;
+	unsigned int flags;
 
 	if (!mm)
 		return 0;
···
 	if (!atomic_inc_not_zero(&mm->mm_users))
 		goto free;
 
+	/* Maybe we should limit FOLL_FORCE to actual ptrace users? */
+	flags = FOLL_FORCE;
 	if (write)
 		flags |= FOLL_WRITE;
 
···
 		max_len = min_t(size_t, PAGE_SIZE, count);
 		this_len = min(max_len, this_len);
 
-		retval = access_remote_vm(mm, (env_start + src),
-			page, this_len, FOLL_FORCE);
+		retval = access_remote_vm(mm, (env_start + src), page, this_len, 0);
 
 		if (retval <= 0) {
 			ret = retval;
···
 {
 	struct mm_struct *mm = file->private_data;
 	unsigned int nwords = 0;
+
+	if (!mm)
+		return 0;
 	do {
 		nwords += 2;
 	} while (mm->saved_auxv[nwords - 2] != 0); /* AT_NULL */

fs/ubifs/dir.c

···
 
 	if (err != -ENOENT)
 		ubifs_err(c, "cannot find next direntry, error %d", err);
+	else
+		/*
+		 * -ENOENT is a non-fatal error in this context, the TNC uses
+		 * it to indicate that the cursor moved past the current directory
+		 * and readdir() has to stop.
+		 */
+		err = 0;
+
 
 	/* 2 is a special value indicating that there are no more direntries */
 	ctx->pos = 2;

fs/xfs/libxfs/xfs_bmap.c

···
 	 * allocating, so skip that check by pretending to be freeing.
 	 */
 	error = xfs_alloc_fix_freelist(&args, XFS_ALLOC_FLAG_FREEING);
-	if (error)
-		goto error0;
-error0:
 	xfs_perag_put(args.pag);
 	if (error)
 		trace_xfs_bmap_remap_alloc_error(ap->ip, error, _RET_IP_);
···
 	    xfs_alloc_is_userdata(ap->datatype))
 		return xfs_bmap_rtalloc(ap);
 	return xfs_bmap_btalloc(ap);
+}
+
+/* Trim extent to fit a logical block range. */
+void
+xfs_trim_extent(
+	struct xfs_bmbt_irec	*irec,
+	xfs_fileoff_t		bno,
+	xfs_filblks_t		len)
+{
+	xfs_fileoff_t		distance;
+	xfs_fileoff_t		end = bno + len;
+
+	if (irec->br_startoff + irec->br_blockcount <= bno ||
+	    irec->br_startoff >= end) {
+		irec->br_blockcount = 0;
+		return;
+	}
+
+	if (irec->br_startoff < bno) {
+		distance = bno - irec->br_startoff;
+		if (isnullstartblock(irec->br_startblock))
+			irec->br_startblock = DELAYSTARTBLOCK;
+		if (irec->br_startblock != DELAYSTARTBLOCK &&
+		    irec->br_startblock != HOLESTARTBLOCK)
+			irec->br_startblock += distance;
+		irec->br_startoff += distance;
+		irec->br_blockcount -= distance;
+	}
+
+	if (end < irec->br_startoff + irec->br_blockcount) {
+		distance = irec->br_startoff + irec->br_blockcount - end;
+		irec->br_blockcount -= distance;
+	}
 }
 
 /*
···
 	return stolen;
 }
 
+int
+xfs_bmap_del_extent_delay(
+	struct xfs_inode	*ip,
+	int			whichfork,
+	xfs_extnum_t		*idx,
+	struct xfs_bmbt_irec	*got,
+	struct xfs_bmbt_irec	*del)
+{
+	struct xfs_mount	*mp = ip->i_mount;
+	struct xfs_ifork	*ifp = XFS_IFORK_PTR(ip, whichfork);
+	struct xfs_bmbt_irec	new;
+	int64_t			da_old, da_new, da_diff = 0;
+	xfs_fileoff_t		del_endoff, got_endoff;
+	xfs_filblks_t		got_indlen, new_indlen, stolen;
+	int			error = 0, state = 0;
+	bool			isrt;
+
+	XFS_STATS_INC(mp, xs_del_exlist);
+
+	isrt = (whichfork == XFS_DATA_FORK) && XFS_IS_REALTIME_INODE(ip);
+	del_endoff = del->br_startoff + del->br_blockcount;
+	got_endoff = got->br_startoff + got->br_blockcount;
+	da_old = startblockval(got->br_startblock);
+	da_new = 0;
+
+	ASSERT(*idx >= 0);
+	ASSERT(*idx < ifp->if_bytes / sizeof(struct xfs_bmbt_rec));
+	ASSERT(del->br_blockcount > 0);
+	ASSERT(got->br_startoff <= del->br_startoff);
+	ASSERT(got_endoff >= del_endoff);
+
+	if (isrt) {
+		int64_t rtexts = XFS_FSB_TO_B(mp, del->br_blockcount);
+
+		do_div(rtexts, mp->m_sb.sb_rextsize);
+		xfs_mod_frextents(mp, rtexts);
+	}
+
+	/*
+	 * Update the inode delalloc counter now and wait to update the
+	 * sb counters as we might have to borrow some blocks for the
+	 * indirect block accounting.
+	 */
+	xfs_trans_reserve_quota_nblks(NULL, ip, -((long)del->br_blockcount), 0,
+			isrt ? XFS_QMOPT_RES_RTBLKS : XFS_QMOPT_RES_REGBLKS);
+	ip->i_delayed_blks -= del->br_blockcount;
+
+	if (whichfork == XFS_COW_FORK)
+		state |= BMAP_COWFORK;
+
+	if (got->br_startoff == del->br_startoff)
+		state |= BMAP_LEFT_CONTIG;
+	if (got_endoff == del_endoff)
+		state |= BMAP_RIGHT_CONTIG;
+
+	switch (state & (BMAP_LEFT_CONTIG | BMAP_RIGHT_CONTIG)) {
+	case BMAP_LEFT_CONTIG | BMAP_RIGHT_CONTIG:
+		/*
+		 * Matches the whole extent.  Delete the entry.
+		 */
+		xfs_iext_remove(ip, *idx, 1, state);
+		--*idx;
+		break;
+	case BMAP_LEFT_CONTIG:
+		/*
+		 * Deleting the first part of the extent.
+		 */
+		trace_xfs_bmap_pre_update(ip, *idx, state, _THIS_IP_);
+		got->br_startoff = del_endoff;
+		got->br_blockcount -= del->br_blockcount;
+		da_new = XFS_FILBLKS_MIN(xfs_bmap_worst_indlen(ip,
+				got->br_blockcount), da_old);
+		got->br_startblock = nullstartblock((int)da_new);
+		xfs_bmbt_set_all(xfs_iext_get_ext(ifp, *idx), got);
+		trace_xfs_bmap_post_update(ip, *idx, state, _THIS_IP_);
+		break;
+	case BMAP_RIGHT_CONTIG:
+		/*
+		 * Deleting the last part of the extent.
+		 */
+		trace_xfs_bmap_pre_update(ip, *idx, state, _THIS_IP_);
+		got->br_blockcount = got->br_blockcount - del->br_blockcount;
+		da_new = XFS_FILBLKS_MIN(xfs_bmap_worst_indlen(ip,
+				got->br_blockcount), da_old);
+		got->br_startblock = nullstartblock((int)da_new);
+		xfs_bmbt_set_all(xfs_iext_get_ext(ifp, *idx), got);
+		trace_xfs_bmap_post_update(ip, *idx, state, _THIS_IP_);
+		break;
+	case 0:
+		/*
+		 * Deleting the middle of the extent.
+		 *
+		 * Distribute the original indlen reservation across the two new
+		 * extents.  Steal blocks from the deleted extent if necessary.
+		 * Stealing blocks simply fudges the fdblocks accounting below.
+		 * Warn if either of the new indlen reservations is zero as this
+		 * can lead to delalloc problems.
+		 */
+		trace_xfs_bmap_pre_update(ip, *idx, state, _THIS_IP_);
+
+		got->br_blockcount = del->br_startoff - got->br_startoff;
+		got_indlen = xfs_bmap_worst_indlen(ip, got->br_blockcount);
+
+		new.br_blockcount = got_endoff - del_endoff;
+		new_indlen = xfs_bmap_worst_indlen(ip, new.br_blockcount);
+
+		WARN_ON_ONCE(!got_indlen || !new_indlen);
+		stolen = xfs_bmap_split_indlen(da_old, &got_indlen, &new_indlen,
+						       del->br_blockcount);
+
+		got->br_startblock = nullstartblock((int)got_indlen);
+		xfs_bmbt_set_all(xfs_iext_get_ext(ifp, *idx), got);
+		trace_xfs_bmap_post_update(ip, *idx, 0, _THIS_IP_);
+
+		new.br_startoff = del_endoff;
+		new.br_state = got->br_state;
+		new.br_startblock = nullstartblock((int)new_indlen);
+
+		++*idx;
+		xfs_iext_insert(ip, *idx, 1, &new, state);
+
+		da_new = got_indlen + new_indlen - stolen;
+		del->br_blockcount -= stolen;
+		break;
+	}
+
+	ASSERT(da_old >= da_new);
+	da_diff = da_old - da_new;
+	if (!isrt)
+		da_diff += del->br_blockcount;
+	if (da_diff)
+		xfs_mod_fdblocks(mp, da_diff, false);
+	return error;
+}
+
+void
+xfs_bmap_del_extent_cow(
+	struct xfs_inode	*ip,
+	xfs_extnum_t		*idx,
+	struct xfs_bmbt_irec	*got,
+	struct xfs_bmbt_irec	*del)
+{
+	struct xfs_mount	*mp = ip->i_mount;
+	struct xfs_ifork	*ifp = XFS_IFORK_PTR(ip, XFS_COW_FORK);
+	struct xfs_bmbt_irec	new;
+	xfs_fileoff_t		del_endoff, got_endoff;
+	int			state = BMAP_COWFORK;
+
+	XFS_STATS_INC(mp, xs_del_exlist);
+
+	del_endoff = del->br_startoff + del->br_blockcount;
+	got_endoff = got->br_startoff + got->br_blockcount;
+
+	ASSERT(*idx >= 0);
+	ASSERT(*idx < ifp->if_bytes / sizeof(struct xfs_bmbt_rec));
+	ASSERT(del->br_blockcount > 0);
+	ASSERT(got->br_startoff <= del->br_startoff);
+	ASSERT(got_endoff >= del_endoff);
+	ASSERT(!isnullstartblock(got->br_startblock));
+
+	if (got->br_startoff == del->br_startoff)
+		state |= BMAP_LEFT_CONTIG;
+	if (got_endoff == del_endoff)
+		state |= BMAP_RIGHT_CONTIG;
+
+	switch (state & (BMAP_LEFT_CONTIG | BMAP_RIGHT_CONTIG)) {
+	case BMAP_LEFT_CONTIG | BMAP_RIGHT_CONTIG:
+		/*
+		 * Matches the whole extent.  Delete the entry.
+		 */
+		xfs_iext_remove(ip, *idx, 1, state);
+		--*idx;
+		break;
+	case BMAP_LEFT_CONTIG:
+		/*
+		 * Deleting the first part of the extent.
+		 */
+		trace_xfs_bmap_pre_update(ip, *idx, state, _THIS_IP_);
+		got->br_startoff = del_endoff;
+		got->br_blockcount -= del->br_blockcount;
+		got->br_startblock = del->br_startblock + del->br_blockcount;
+		xfs_bmbt_set_all(xfs_iext_get_ext(ifp, *idx), got);
+		trace_xfs_bmap_post_update(ip, *idx, state, _THIS_IP_);
+		break;
+	case BMAP_RIGHT_CONTIG:
+		/*
+		 * Deleting the last part of the extent.
+		 */
+		trace_xfs_bmap_pre_update(ip, *idx, state, _THIS_IP_);
+		got->br_blockcount -= del->br_blockcount;
+		xfs_bmbt_set_all(xfs_iext_get_ext(ifp, *idx), got);
+		trace_xfs_bmap_post_update(ip, *idx, state, _THIS_IP_);
+		break;
+	case 0:
+		/*
+		 * Deleting the middle of the extent.
+		 */
+		trace_xfs_bmap_pre_update(ip, *idx, state, _THIS_IP_);
+		got->br_blockcount = del->br_startoff - got->br_startoff;
+		xfs_bmbt_set_all(xfs_iext_get_ext(ifp, *idx), got);
+		trace_xfs_bmap_post_update(ip, *idx, state, _THIS_IP_);
+
+		new.br_startoff = del_endoff;
+		new.br_blockcount = got_endoff - del_endoff;
+		new.br_state = got->br_state;
+		new.br_startblock = del->br_startblock + del->br_blockcount;
+
+		++*idx;
+		xfs_iext_insert(ip, *idx, 1, &new, state);
+		break;
+	}
+}
+
 /*
  * Called by xfs_bmapi to update file extent records and the btree
  * after removing space (or undoing a delayed allocation).
···
 		xfs_mod_fdblocks(mp, (int64_t)(da_old - da_new), false);
 done:
 	*logflagsp = flags;
-	return error;
-}
-
-/* Remove an extent from the CoW fork.  Similar to xfs_bmap_del_extent. */
-int
-xfs_bunmapi_cow(
-	struct xfs_inode		*ip,
-	struct xfs_bmbt_irec		*del)
-{
-	xfs_filblks_t			da_new;
-	xfs_filblks_t			da_old;
-	xfs_fsblock_t			del_endblock = 0;
-	xfs_fileoff_t			del_endoff;
-	int				delay;
-	struct xfs_bmbt_rec_host	*ep;
-	int				error;
-	struct xfs_bmbt_irec		got;
-	xfs_fileoff_t			got_endoff;
-	struct xfs_ifork		*ifp;
-	struct xfs_mount		*mp;
-	xfs_filblks_t			nblks;
-	struct xfs_bmbt_irec		new;
-	/* REFERENCED */
-	uint				qfield;
-	xfs_filblks_t			temp;
-	xfs_filblks_t			temp2;
-	int				state = BMAP_COWFORK;
-	int				eof;
-	xfs_extnum_t			eidx;
-
-	mp = ip->i_mount;
-	XFS_STATS_INC(mp, xs_del_exlist);
-
-	ep = xfs_bmap_search_extents(ip, del->br_startoff, XFS_COW_FORK, &eof,
-			&eidx, &got, &new);
-
-	ifp = XFS_IFORK_PTR(ip, XFS_COW_FORK); ifp = ifp;
-	ASSERT((eidx >= 0) && (eidx < ifp->if_bytes /
-		(uint)sizeof(xfs_bmbt_rec_t)));
-	ASSERT(del->br_blockcount > 0);
-	ASSERT(got.br_startoff <= del->br_startoff);
-	del_endoff = del->br_startoff + del->br_blockcount;
-	got_endoff = got.br_startoff + got.br_blockcount;
-	ASSERT(got_endoff >= del_endoff);
-	delay = isnullstartblock(got.br_startblock);
-	ASSERT(isnullstartblock(del->br_startblock) == delay);
-	qfield = 0;
-	error = 0;
-	/*
-	 * If deleting a real allocation, must free up the disk space.
-	 */
-	if (!delay) {
-		nblks = del->br_blockcount;
-		qfield = XFS_TRANS_DQ_BCOUNT;
-		/*
-		 * Set up del_endblock and cur for later.
-		 */
-		del_endblock = del->br_startblock + del->br_blockcount;
-		da_old = da_new = 0;
-	} else {
-		da_old = startblockval(got.br_startblock);
-		da_new = 0;
-		nblks = 0;
-	}
-	qfield = qfield;
-	nblks = nblks;
-
-	/*
-	 * Set flag value to use in switch statement.
-	 * Left-contig is 2, right-contig is 1.
-	 */
-	switch (((got.br_startoff == del->br_startoff) << 1) |
-		(got_endoff == del_endoff)) {
-	case 3:
-		/*
-		 * Matches the whole extent.  Delete the entry.
-		 */
-		xfs_iext_remove(ip, eidx, 1, BMAP_COWFORK);
-		--eidx;
-		break;
-
-	case 2:
-		/*
-		 * Deleting the first part of the extent.
-		 */
-		trace_xfs_bmap_pre_update(ip, eidx, state, _THIS_IP_);
-		xfs_bmbt_set_startoff(ep, del_endoff);
-		temp = got.br_blockcount - del->br_blockcount;
-		xfs_bmbt_set_blockcount(ep, temp);
-		if (delay) {
-			temp = XFS_FILBLKS_MIN(xfs_bmap_worst_indlen(ip, temp),
-				da_old);
-			xfs_bmbt_set_startblock(ep, nullstartblock((int)temp));
-			trace_xfs_bmap_post_update(ip, eidx, state, _THIS_IP_);
-			da_new = temp;
-			break;
-		}
-		xfs_bmbt_set_startblock(ep, del_endblock);
-		trace_xfs_bmap_post_update(ip, eidx, state, _THIS_IP_);
-		break;
-
-	case 1:
-		/*
-		 * Deleting the last part of the extent.
-		 */
-		temp = got.br_blockcount - del->br_blockcount;
-		trace_xfs_bmap_pre_update(ip, eidx, state, _THIS_IP_);
-		xfs_bmbt_set_blockcount(ep, temp);
-		if (delay) {
-			temp = XFS_FILBLKS_MIN(xfs_bmap_worst_indlen(ip, temp),
-				da_old);
-			xfs_bmbt_set_startblock(ep, nullstartblock((int)temp));
-			trace_xfs_bmap_post_update(ip, eidx, state, _THIS_IP_);
-			da_new = temp;
-			break;
-		}
-		trace_xfs_bmap_post_update(ip, eidx, state, _THIS_IP_);
-		break;
-
-	case 0:
-		/*
-		 * Deleting the middle of the extent.
-		 */
-		temp = del->br_startoff - got.br_startoff;
-		trace_xfs_bmap_pre_update(ip, eidx, state, _THIS_IP_);
-		xfs_bmbt_set_blockcount(ep, temp);
-		new.br_startoff = del_endoff;
-		temp2 = got_endoff - del_endoff;
-		new.br_blockcount = temp2;
-		new.br_state = got.br_state;
-		if (!delay) {
-			new.br_startblock = del_endblock;
-		} else {
-			temp = xfs_bmap_worst_indlen(ip, temp);
-			xfs_bmbt_set_startblock(ep, nullstartblock((int)temp));
-			temp2 = xfs_bmap_worst_indlen(ip, temp2);
-			new.br_startblock = nullstartblock((int)temp2);
-			da_new = temp + temp2;
-			while (da_new > da_old) {
-				if (temp) {
-					temp--;
-					da_new--;
-					xfs_bmbt_set_startblock(ep,
-						nullstartblock((int)temp));
-				}
-				if (da_new == da_old)
-					break;
-				if (temp2) {
-					temp2--;
-					da_new--;
-					new.br_startblock =
-						nullstartblock((int)temp2);
-				}
-			}
-		}
-		trace_xfs_bmap_post_update(ip, eidx, state, _THIS_IP_);
-		xfs_iext_insert(ip, eidx + 1, 1, &new, state);
-		++eidx;
-		break;
-	}
-
-	/*
-	 * Account for change in delayed indirect blocks.
-	 * Nothing to do for disk quota accounting here.
-	 */
-	ASSERT(da_old >= da_new);
-	if (da_old > da_new)
-		xfs_mod_fdblocks(mp, (int64_t)(da_old - da_new), false);
-
 	return error;
 }
 

fs/xfs/libxfs/xfs_bmap.h

···
 #define	XFS_BMAP_TRACE_EXLIST(ip,c,w)
 #endif
 
+void	xfs_trim_extent(struct xfs_bmbt_irec *irec, xfs_fileoff_t bno,
+		xfs_filblks_t len);
 int	xfs_bmap_add_attrfork(struct xfs_inode *ip, int size, int rsvd);
 void	xfs_bmap_local_to_extents_empty(struct xfs_inode *ip, int whichfork);
 void	xfs_bmap_add_free(struct xfs_mount *mp, struct xfs_defer_ops *dfops,
···
 		xfs_fileoff_t bno, xfs_filblks_t len, int flags,
 		xfs_extnum_t nexts, xfs_fsblock_t *firstblock,
 		struct xfs_defer_ops *dfops, int *done);
-int	xfs_bunmapi_cow(struct xfs_inode *ip, struct xfs_bmbt_irec *del);
+int	xfs_bmap_del_extent_delay(struct xfs_inode *ip, int whichfork,
+		xfs_extnum_t *idx, struct xfs_bmbt_irec *got,
+		struct xfs_bmbt_irec *del);
+void	xfs_bmap_del_extent_cow(struct xfs_inode *ip, xfs_extnum_t *idx,
+		struct xfs_bmbt_irec *got, struct xfs_bmbt_irec *del);
 int	xfs_check_nostate_extents(struct xfs_ifork *ifp, xfs_extnum_t idx,
 		xfs_extnum_t num);
 uint	xfs_default_attroffset(struct xfs_inode *ip);

fs/xfs/libxfs/xfs_btree.c

···
 	return rval;
 }
 
-int
+static int
 xfs_btree_count_blocks_helper(
 	struct xfs_btree_cur	*cur,
 	int			level,

fs/xfs/libxfs/xfs_dquot_buf.c

···
 	if (mp->m_quotainfo)
 		ndquots = mp->m_quotainfo->qi_dqperchunk;
 	else
-		ndquots = xfs_calc_dquots_per_chunk(
-					XFS_BB_TO_FSB(mp, bp->b_length));
+		ndquots = xfs_calc_dquots_per_chunk(bp->b_length);
 
 	for (i = 0; i < ndquots; i++, d++) {
 		if (!xfs_verify_cksum((char *)d, sizeof(struct xfs_dqblk),

fs/xfs/libxfs/xfs_format.h

···
  * padding field for v3 inodes.
  */
 #define	XFS_DINODE_MAGIC		0x494e	/* 'IN' */
-#define XFS_DINODE_GOOD_VERSION(v)	((v) >= 1 && (v) <= 3)
 typedef struct xfs_dinode {
 	__be16		di_magic;	/* inode magic # = XFS_DINODE_MAGIC */
 	__be16		di_mode;	/* mode and type of file */

fs/xfs/libxfs/xfs_inode_buf.c

···
 }
 #endif
 
+bool
+xfs_dinode_good_version(
+	struct xfs_mount *mp,
+	__u8		version)
+{
+	if (xfs_sb_version_hascrc(&mp->m_sb))
+		return version == 3;
+
+	return version == 1 || version == 2;
+}
+
 /*
  * If we are doing readahead on an inode buffer, we might be in log recovery
  * reading an inode allocation buffer that hasn't yet been replayed, and hence
···
 
 		dip = xfs_buf_offset(bp, (i << mp->m_sb.sb_inodelog));
 		di_ok = dip->di_magic == cpu_to_be16(XFS_DINODE_MAGIC) &&
-			    XFS_DINODE_GOOD_VERSION(dip->di_version);
+			xfs_dinode_good_version(mp, dip->di_version);
 		if (unlikely(XFS_TEST_ERROR(!di_ok, mp,
 						XFS_ERRTAG_ITOBP_INOTOBP,
 						XFS_RANDOM_ITOBP_INOTOBP))) {

fs/xfs/libxfs/xfs_inode_buf.h

···
 void	xfs_log_dinode_to_disk(struct xfs_log_dinode *from,
 			       struct xfs_dinode *to);
 
+bool	xfs_dinode_good_version(struct xfs_mount *mp, __u8 version);
+
 #if defined(DEBUG)
 void	xfs_inobp_check(struct xfs_mount *, struct xfs_buf *);
 #else

fs/xfs/xfs_file.c

···
 	struct xfs_inode	*ip = XFS_I(inode);
 	loff_t			isize = i_size_read(inode);
 	size_t			count = iov_iter_count(to);
+	loff_t			end = iocb->ki_pos + count - 1;
 	struct iov_iter		data;
 	struct xfs_buftarg	*target;
 	ssize_t			ret = 0;
···
 
 	file_accessed(iocb->ki_filp);
 
-	/*
-	 * Locking is a bit tricky here. If we take an exclusive lock for direct
-	 * IO, we effectively serialise all new concurrent read IO to this file
-	 * and block it behind IO that is currently in progress because IO in
-	 * progress holds the IO lock shared. We only need to hold the lock
-	 * exclusive to blow away the page cache, so only take lock exclusively
-	 * if the page cache needs invalidation. This allows the normal direct
-	 * IO case of no page cache pages to proceeed concurrently without
-	 * serialisation.
-	 */
 	xfs_rw_ilock(ip, XFS_IOLOCK_SHARED);
 	if (mapping->nrpages) {
-		xfs_rw_iunlock(ip, XFS_IOLOCK_SHARED);
-		xfs_rw_ilock(ip, XFS_IOLOCK_EXCL);
+		ret = filemap_write_and_wait_range(mapping, iocb->ki_pos, end);
+		if (ret)
+			goto out_unlock;
 
 		/*
-		 * The generic dio code only flushes the range of the particular
-		 * I/O. Because we take an exclusive lock here, this whole
-		 * sequence is considerably more expensive for us. This has a
-		 * noticeable performance impact for any file with cached pages,
-		 * even when outside of the range of the particular I/O.
-		 *
-		 * Hence, amortize the cost of the lock against a full file
-		 * flush and reduce the chances of repeated iolock cycles going
-		 * forward.
+		 * Invalidate whole pages. This can return an error if we fail
+		 * to invalidate a page, but this should never happen on XFS.
+		 * Warn if it does fail.
 		 */
-		if (mapping->nrpages) {
-			ret = filemap_write_and_wait(mapping);
-			if (ret) {
-				xfs_rw_iunlock(ip, XFS_IOLOCK_EXCL);
-				return ret;
-			}
-
-			/*
-			 * Invalidate whole pages. This can return an error if
-			 * we fail to invalidate a page, but this should never
-			 * happen on XFS. Warn if it does fail.
-			 */
-			ret = invalidate_inode_pages2(mapping);
-			WARN_ON_ONCE(ret);
-			ret = 0;
-		}
-		xfs_rw_ilock_demote(ip, XFS_IOLOCK_EXCL);
+		ret = invalidate_inode_pages2_range(mapping,
+				iocb->ki_pos >> PAGE_SHIFT, end >> PAGE_SHIFT);
+		WARN_ON_ONCE(ret);
+		ret = 0;
 	}
 
 	data = *to;
···
 		iocb->ki_pos += ret;
 		iov_iter_advance(to, ret);
 	}
-	xfs_rw_iunlock(ip, XFS_IOLOCK_SHARED);
 
+out_unlock:
+	xfs_rw_iunlock(ip, XFS_IOLOCK_SHARED);
 	return ret;
 }
 
···
 	if ((iocb->ki_pos | count) & target->bt_logical_sectormask)
 		return -EINVAL;
 
-	/* "unaligned" here means not aligned to a filesystem block */
+	/*
+	 * Don't take the exclusive iolock here unless the I/O is unaligned to
+	 * the file system block size.  We don't need to consider the EOF
+	 * extension case here because xfs_file_aio_write_checks() will relock
+	 * the inode as necessary for EOF zeroing cases and fill out the new
+	 * inode size as appropriate.
+	 */
 	if ((iocb->ki_pos & mp->m_blockmask) ||
-	    ((iocb->ki_pos + count) & mp->m_blockmask))
+	    ((iocb->ki_pos + count) & mp->m_blockmask)) {
 		unaligned_io = 1;
-
-	/*
-	 * We don't need to take an exclusive lock unless there page cache needs
-	 * to be invalidated or unaligned IO is being executed. We don't need to
-	 * consider the EOF extension case here because
-	 * xfs_file_aio_write_checks() will relock the inode as necessary for
-	 * EOF zeroing cases and fill out the new inode size as appropriate.
-	 */
-	if (unaligned_io || mapping->nrpages)
 		iolock = XFS_IOLOCK_EXCL;
-	else
+	} else {
 		iolock = XFS_IOLOCK_SHARED;
-	xfs_rw_ilock(ip, iolock);
-
-	/*
-	 * Recheck if there are cached pages that need invalidate after we got
-	 * the iolock to protect against other threads adding new pages while
-	 * we were waiting for the iolock.
-	 */
-	if (mapping->nrpages && iolock == XFS_IOLOCK_SHARED) {
-		xfs_rw_iunlock(ip, iolock);
-		iolock = XFS_IOLOCK_EXCL;
-		xfs_rw_ilock(ip, iolock);
 	}
+
+	xfs_rw_ilock(ip, iolock);
 
 	ret = xfs_file_aio_write_checks(iocb, from, &iolock);
 	if (ret)
···
 	count = iov_iter_count(from);
 	end = iocb->ki_pos + count - 1;
 
-	/*
-	 * See xfs_file_dio_aio_read() for why we do a full-file flush here.
-	 */
 	if (mapping->nrpages) {
-		ret = filemap_write_and_wait(VFS_I(ip)->i_mapping);
+		ret = filemap_write_and_wait_range(mapping, iocb->ki_pos, end);
 		if (ret)
 			goto out;
+
 		/*
 		 * Invalidate whole pages. This can return an error if we fail
 		 * to invalidate a page, but this should never happen on XFS.
 		 * Warn if it does fail.
 		 */
-		ret = invalidate_inode_pages2(VFS_I(ip)->i_mapping);
+		ret = invalidate_inode_pages2_range(mapping,
+				iocb->ki_pos >> PAGE_SHIFT, end >> PAGE_SHIFT);
 		WARN_ON_ONCE(ret);
 		ret = 0;
 	}
 
 	/*
 	 * If we are doing unaligned IO, wait for all other IO to drain,
-	 * otherwise demote the lock if we had to flush cached pages
+	 * otherwise demote the lock if we had to take the exclusive lock
+	 * for other reasons in xfs_file_aio_write_checks.
 	 */
 	if (unaligned_io)
 		inode_dio_wait(inode);
···
 	return error;
 }
 
-/*
- * Flush all file writes out to disk.
- */
-static int
-xfs_file_wait_for_io(
-	struct inode	*inode,
-	loff_t		offset,
-	size_t		len)
-{
-	loff_t		rounding;
-	loff_t		ioffset;
-	loff_t		iendoffset;
-	loff_t		bs;
-	int		ret;
-
-	bs = inode->i_sb->s_blocksize;
-	inode_dio_wait(inode);
-
-	rounding = max_t(xfs_off_t, bs, PAGE_SIZE);
-	ioffset = round_down(offset, rounding);
-	iendoffset = round_up(offset + len, rounding) - 1;
-	ret = filemap_write_and_wait_range(inode->i_mapping, ioffset,
-					   iendoffset);
-	return ret;
-}
-
-/* Hook up to the VFS reflink function */
-STATIC int
-xfs_file_share_range(
-	struct file	*file_in,
-	loff_t		pos_in,
-	struct file	*file_out,
-	loff_t		pos_out,
-	u64		len,
-	bool		is_dedupe)
-{
-	struct inode	*inode_in;
-	struct inode	*inode_out;
-	ssize_t		ret;
-	loff_t		bs;
-	loff_t		isize;
-	int		same_inode;
-	loff_t		blen;
-	unsigned int	flags = 0;
-
-	inode_in = file_inode(file_in);
-	inode_out = file_inode(file_out);
-	bs = inode_out->i_sb->s_blocksize;
-
-	/* Don't touch certain kinds of inodes */
-	if (IS_IMMUTABLE(inode_out))
-		return -EPERM;
-	if (IS_SWAPFILE(inode_in) ||
-	    IS_SWAPFILE(inode_out))
-		return -ETXTBSY;
-
-	/* Reflink only works within this filesystem. */
-	if (inode_in->i_sb != inode_out->i_sb)
-		return -EXDEV;
-	same_inode = (inode_in->i_ino == inode_out->i_ino);
-
-	/* Don't reflink dirs, pipes, sockets... */
-	if (S_ISDIR(inode_in->i_mode) || S_ISDIR(inode_out->i_mode))
-		return -EISDIR;
-	if (S_ISFIFO(inode_in->i_mode) || S_ISFIFO(inode_out->i_mode))
-		return -EINVAL;
-	if (!S_ISREG(inode_in->i_mode) || !S_ISREG(inode_out->i_mode))
-		return -EINVAL;
-
-	/* Don't share DAX file data for now. */
-	if (IS_DAX(inode_in) || IS_DAX(inode_out))
-		return -EINVAL;
-
-	/* Are we going all the way to the end? */
-	isize = i_size_read(inode_in);
-	if (isize == 0)
-		return 0;
-	if (len == 0)
-		len = isize - pos_in;
-
-	/* Ensure offsets don't wrap and the input is inside i_size */
-	if (pos_in + len < pos_in || pos_out + len < pos_out ||
-	    pos_in + len > isize)
-		return -EINVAL;
-
-	/* Don't allow dedupe past EOF in the dest file */
-	if (is_dedupe) {
-		loff_t	disize;
-
-		disize = i_size_read(inode_out);
-		if (pos_out >= disize || pos_out + len > disize)
-			return -EINVAL;
-	}
-
-	/* If we're linking to EOF, continue to the block boundary. */
-	if (pos_in + len == isize)
-		blen = ALIGN(isize, bs) - pos_in;
-	else
-		blen = len;
-
-	/* Only reflink if we're aligned to block boundaries */
-	if (!IS_ALIGNED(pos_in, bs) || !IS_ALIGNED(pos_in + blen, bs) ||
-	    !IS_ALIGNED(pos_out, bs) || !IS_ALIGNED(pos_out + blen, bs))
-		return -EINVAL;
-
-	/* Don't allow overlapped reflink within the same file */
-	if (same_inode && pos_out + blen > pos_in && pos_out < pos_in + blen)
-		return -EINVAL;
-
-	/* Wait for the completion of any pending IOs on srcfile */
-	ret = xfs_file_wait_for_io(inode_in, pos_in, len);
-	if (ret)
-		goto out;
-	ret = xfs_file_wait_for_io(inode_out, pos_out, len);
-	if (ret)
-		goto out;
-
-	if (is_dedupe)
-		flags |= XFS_REFLINK_DEDUPE;
-	ret = xfs_reflink_remap_range(XFS_I(inode_in), pos_in, XFS_I(inode_out),
-			pos_out, len, flags);
-	if (ret < 0)
-		goto out;
-
-out:
-	return ret;
-}
-
 STATIC ssize_t
 xfs_file_copy_range(
 	struct file	*file_in,
···
 {
 	int		error;
 
-	error = xfs_file_share_range(file_in, pos_in, file_out, pos_out,
+	error = xfs_reflink_remap_range(file_in, pos_in, file_out, pos_out,
 				     len, false);
 	if (error)
 		return error;
···
 	loff_t		pos_out,
 	u64		len)
 {
-	return xfs_file_share_range(file_in, pos_in, file_out, pos_out,
+	return xfs_reflink_remap_range(file_in, pos_in, file_out, pos_out,
 				     len, false);
 }
 
···
 	if (len > XFS_MAX_DEDUPE_LEN)
 		len = XFS_MAX_DEDUPE_LEN;
 
-	error = xfs_file_share_range(src_file, loff, dst_file, dst_loff,
+	error = xfs_reflink_remap_range(src_file, loff, dst_file, dst_loff,
 				     len, true);
 	if (error)
 		return error;

fs/xfs/xfs_icache.c

···
 xfs_inode_set_cowblocks_tag(
 	xfs_inode_t	*ip)
 {
-	trace_xfs_inode_set_eofblocks_tag(ip);
+	trace_xfs_inode_set_cowblocks_tag(ip);
 	return __xfs_inode_set_eofblocks_tag(ip, xfs_queue_cowblocks,
-			trace_xfs_perag_set_eofblocks,
+			trace_xfs_perag_set_cowblocks,
 			XFS_ICI_COWBLOCKS_TAG);
 }
 
···
 xfs_inode_clear_cowblocks_tag(
 	xfs_inode_t	*ip)
 {
-	trace_xfs_inode_clear_eofblocks_tag(ip);
+	trace_xfs_inode_clear_cowblocks_tag(ip);
 	return __xfs_inode_clear_eofblocks_tag(ip,
-			trace_xfs_perag_clear_eofblocks, XFS_ICI_COWBLOCKS_TAG);
+			trace_xfs_perag_clear_cowblocks, XFS_ICI_COWBLOCKS_TAG);
 }

fs/xfs/xfs_iomap.c

···
 	xfs_bmap_search_extents(ip, offset_fsb, XFS_DATA_FORK, &eof, &idx,
 			&got, &prev);
 	if (!eof && got.br_startoff <= offset_fsb) {
+		if (xfs_is_reflink_inode(ip)) {
+			bool		shared;
+
+			end_fsb = min(XFS_B_TO_FSB(mp, offset + count),
+					maxbytes_fsb);
+			xfs_trim_extent(&got, offset_fsb, end_fsb - offset_fsb);
+			error = xfs_reflink_reserve_cow(ip, &got, &shared);
+			if (error)
+				goto out_unlock;
+		}
+
 		trace_xfs_iomap_found(ip, offset, count, 0, &got);
 		goto done;
 	}
···
 	struct xfs_mount	*mp = ip->i_mount;
 	struct xfs_bmbt_irec	imap;
 	xfs_fileoff_t		offset_fsb, end_fsb;
-	bool			shared, trimmed;
 	int			nimaps = 1, error = 0;
+	bool			shared = false, trimmed = false;
 	unsigned		lockmode;
 
 	if (XFS_FORCED_SHUTDOWN(mp))
 		return -EIO;
-
-	if ((flags & (IOMAP_WRITE | IOMAP_ZERO)) && xfs_is_reflink_inode(ip)) {
-		error = xfs_reflink_reserve_cow_range(ip, offset, length);
-		if (error < 0)
-			return error;
-	}
 
 	if ((flags & IOMAP_WRITE) && !IS_DAX(inode) &&
 		   !xfs_get_extsz_hint(ip)) {
···
 				iomap);
 	}
 
-	lockmode = xfs_ilock_data_map_shared(ip);
+	/*
+	 * COW writes will allocate delalloc space, so we need to make sure
+	 * to take the lock exclusively here.
+	 */
+	if ((flags & (IOMAP_WRITE | IOMAP_ZERO)) && xfs_is_reflink_inode(ip)) {
+		lockmode = XFS_ILOCK_EXCL;
+		xfs_ilock(ip, XFS_ILOCK_EXCL);
+	} else {
+		lockmode = xfs_ilock_data_map_shared(ip);
+	}
 
 	ASSERT(offset <= mp->m_super->s_maxbytes);
 	if ((xfs_fsize_t)offset + length > mp->m_super->s_maxbytes)
···
 
 	error = xfs_bmapi_read(ip, offset_fsb, end_fsb - offset_fsb, &imap,
 			       &nimaps, 0);
-	if (error) {
-		xfs_iunlock(ip, lockmode);
-		return error;
+	if (error)
+		goto out_unlock;
+
+	if (flags & IOMAP_REPORT) {
+		/* Trim the mapping to the nearest shared extent boundary. */
+		error = xfs_reflink_trim_around_shared(ip, &imap, &shared,
+				&trimmed);
+		if (error)
+			goto out_unlock;
 	}
 
-	/* Trim the mapping to the nearest shared extent boundary. */
-	error = xfs_reflink_trim_around_shared(ip, &imap, &shared, &trimmed);
-	if (error) {
-		xfs_iunlock(ip, lockmode);
-		return error;
+	if ((flags & (IOMAP_WRITE | IOMAP_ZERO)) && xfs_is_reflink_inode(ip)) {
+		error = xfs_reflink_reserve_cow(ip, &imap, &shared);
+		if (error)
+			goto out_unlock;
+
+		end_fsb = imap.br_startoff + imap.br_blockcount;
+		length = XFS_FSB_TO_B(mp, end_fsb) - offset;
 	}
 
 	if ((flags & IOMAP_WRITE) && imap_needs_alloc(inode, &imap, nimaps)) {
···
 	if (shared)
 		iomap->flags |= IOMAP_F_SHARED;
 	return 0;
+out_unlock:
+	xfs_iunlock(ip, lockmode);
+	return error;
 }
 
 static int

fs/xfs/xfs_mount.c

···
  out_quota:
 	xfs_qm_unmount_quotas(mp);
  out_rtunmount:
+	mp->m_super->s_flags &= ~MS_ACTIVE;
 	xfs_rtunmount_inodes(mp);
  out_rele_rip:
 	IRELE(rip);

fs/xfs/xfs_reflink.c

···
 	if (!xfs_is_reflink_inode(ip) ||
 	    ISUNWRITTEN(irec) ||
 	    irec->br_startblock == HOLESTARTBLOCK ||
-	    irec->br_startblock == DELAYSTARTBLOCK) {
+	    irec->br_startblock == DELAYSTARTBLOCK ||
+	    isnullstartblock(irec->br_startblock)) {
 		*shared = false;
 		return 0;
 	}
···
 	}
 }
 
-/* Create a CoW reservation for a range of blocks within a file. */
-static int
-__xfs_reflink_reserve_cow(
+/*
+ * Trim the passed in imap to the next shared/unshared extent boundary, and
+ * if imap->br_startoff points to a shared extent reserve space for it in the
+ * COW fork.  In this case *shared is set to true, else to false.
+ *
+ * Note that imap will always contain the block numbers for the existing blocks
+ * in the data fork, as the upper layers need them for read-modify-write
+ * operations.
+ */
+int
+xfs_reflink_reserve_cow(
 	struct xfs_inode	*ip,
-	xfs_fileoff_t		*offset_fsb,
-	xfs_fileoff_t		end_fsb,
-	bool			*skipped)
+	struct xfs_bmbt_irec	*imap,
+	bool			*shared)
 {
-	struct xfs_bmbt_irec	got, prev, imap;
-	xfs_fileoff_t		orig_end_fsb;
-	int			nimaps, eof = 0, error = 0;
-	bool			shared = false, trimmed = false;
+	struct xfs_bmbt_irec	got, prev;
+	xfs_fileoff_t		end_fsb, orig_end_fsb;
+	int			eof = 0, error = 0;
+	bool			trimmed;
 	xfs_extnum_t		idx;
 	xfs_extlen_t		align;
 
-	/* Already reserved?  Skip the refcount btree access. */
-	xfs_bmap_search_extents(ip, *offset_fsb, XFS_COW_FORK, &eof, &idx,
+	/*
+	 * Search the COW fork extent list first.  This serves two purposes:
+	 * first this implement the speculative preallocation using cowextisze,
+	 * so that we also unshared block adjacent to shared blocks instead
+	 * of just the shared blocks themselves.  Second the lookup in the
+	 * extent list is generally faster than going out to the shared extent
+	 * tree.
+	 */
+	xfs_bmap_search_extents(ip, imap->br_startoff, XFS_COW_FORK, &eof, &idx,
 			&got, &prev);
-	if (!eof && got.br_startoff <= *offset_fsb) {
-		end_fsb = orig_end_fsb = got.br_startoff + got.br_blockcount;
-		trace_xfs_reflink_cow_found(ip, &got);
-		goto done;
-	}
+	if (!eof && got.br_startoff <= imap->br_startoff) {
+		trace_xfs_reflink_cow_found(ip, imap);
+		xfs_trim_extent(imap, got.br_startoff, got.br_blockcount);
 
-	/* Read extent from the source file. */
-	nimaps = 1;
-	error = xfs_bmapi_read(ip, *offset_fsb, end_fsb - *offset_fsb,
-			&imap, &nimaps, 0);
-	if (error)
-		goto out_unlock;
-	ASSERT(nimaps == 1);
+		*shared = true;
+		return 0;
+	}
 
 	/* Trim the mapping to the nearest shared extent boundary. */
-	error = xfs_reflink_trim_around_shared(ip, &imap, &shared, &trimmed);
+	error = xfs_reflink_trim_around_shared(ip, imap, shared, &trimmed);
 	if (error)
-		goto out_unlock;
-
-	end_fsb = orig_end_fsb = imap.br_startoff + imap.br_blockcount;
+		return error;
 
 	/* Not shared?  Just report the (potentially capped) extent. */
-	if (!shared) {
-		*skipped = true;
-		goto done;
-	}
+	if (!*shared)
+		return 0;
 
 	/*
 	 * Fork all the shared blocks from our write offset until the end of
···
 	 */
 	error = xfs_qm_dqattach_locked(ip, 0);
 	if (error)
-		goto out_unlock;
+		return error;
+
+	end_fsb = orig_end_fsb = imap->br_startoff + imap->br_blockcount;
 
 	align = xfs_eof_alignment(ip, xfs_get_cowextsz_hint(ip));
 	if (align)
 		end_fsb = roundup_64(end_fsb, align);
 
 retry:
-	error = xfs_bmapi_reserve_delalloc(ip, XFS_COW_FORK, *offset_fsb,
-			end_fsb - *offset_fsb, &got,
-			&prev, &idx, eof);
+	error = xfs_bmapi_reserve_delalloc(ip, XFS_COW_FORK, imap->br_startoff,
+			end_fsb - imap->br_startoff, &got, &prev, &idx, eof);
 	switch (error) {
 	case 0:
 		break;
 	case -ENOSPC:
 	case -EDQUOT:
 		/* retry without any preallocation */
-		trace_xfs_reflink_cow_enospc(ip, &imap);
+		trace_xfs_reflink_cow_enospc(ip, imap);
 		if (end_fsb != orig_end_fsb) {
 			end_fsb = orig_end_fsb;
 			goto retry;
 		}
 		/*FALLTHRU*/
 	default:
-		goto out_unlock;
+		return error;
 	}
 
 	if (end_fsb != orig_end_fsb)
 		xfs_inode_set_cowblocks_tag(ip);
 
 	trace_xfs_reflink_cow_alloc(ip, &got);
-done:
-	*offset_fsb = end_fsb;
-out_unlock:
-	return error;
-}
-
-/* Create a CoW reservation for part of a file. */
-int
-xfs_reflink_reserve_cow_range(
-	struct xfs_inode	*ip,
-	xfs_off_t		offset,
-	xfs_off_t		count)
-{
-	struct xfs_mount	*mp = ip->i_mount;
-	xfs_fileoff_t		offset_fsb, end_fsb;
-	bool			skipped = false;
-	int			error;
-
-	trace_xfs_reflink_reserve_cow_range(ip, offset, count);
-
-	offset_fsb = XFS_B_TO_FSBT(mp, offset);
-	end_fsb = XFS_B_TO_FSB(mp, offset + count);
-
-	xfs_ilock(ip, XFS_ILOCK_EXCL);
-	while (offset_fsb < end_fsb) {
-		error = __xfs_reflink_reserve_cow(ip, &offset_fsb, end_fsb,
-				&skipped);
-		if (error) {
-			trace_xfs_reflink_reserve_cow_range_error(ip, error,
-				_RET_IP_);
-			break;
-		}
-	}
-	xfs_iunlock(ip, XFS_ILOCK_EXCL);
-
-	return error;
+	return 0;
 }
 
 /* Allocate all CoW reservations covering a range of blocks in a file. */
···
 	struct xfs_defer_ops	dfops;
 	struct xfs_trans	*tp;
 	xfs_fsblock_t		first_block;
-	xfs_fileoff_t		next_fsb;
 	int			nimaps = 1, error;
-	bool			skipped = false;
+	bool			shared;
 
 	xfs_defer_init(&dfops, &first_block);
 
···
 
 	xfs_ilock(ip, XFS_ILOCK_EXCL);
 
-	next_fsb = *offset_fsb;
-	error = __xfs_reflink_reserve_cow(ip, &next_fsb, end_fsb, &skipped);
+	/* Read extent from the source file. */
+	nimaps = 1;
+	error = xfs_bmapi_read(ip, *offset_fsb, end_fsb - *offset_fsb,
+			&imap, &nimaps, 0);
+	if (error)
+		goto out_unlock;
+	ASSERT(nimaps == 1);
+
+	error = xfs_reflink_reserve_cow(ip, &imap, &shared);
 	if (error)
 		goto out_trans_cancel;
 
-	if (skipped) {
-		*offset_fsb = next_fsb;
+	if (!shared) {
+		*offset_fsb = imap.br_startoff + imap.br_blockcount;
 		goto out_trans_cancel;
 	}
 
 	xfs_trans_ijoin(tp, ip, 0);
-	error = xfs_bmapi_write(tp, ip, *offset_fsb, next_fsb - *offset_fsb,
+	error = xfs_bmapi_write(tp, ip, imap.br_startoff, imap.br_blockcount,
 			XFS_BMAPI_COWFORK, &first_block,
 			XFS_EXTENTADD_SPACE_RES(mp, XFS_DATA_FORK),
 			&imap, &nimaps, &dfops);
 	if (error)
 		goto out_trans_cancel;
-
-	/* We might not have been able to map the whole delalloc extent */
-	*offset_fsb = min(*offset_fsb + imap.br_blockcount, next_fsb);
 
 	error = xfs_defer_finish(&tp, &dfops, NULL);
 	if (error)
···
 
 	error = xfs_trans_commit(tp);
 
+	*offset_fsb = imap.br_startoff + imap.br_blockcount;
 out_unlock:
 	xfs_iunlock(ip, XFS_ILOCK_EXCL);
 	return error;
···
 	xfs_fileoff_t			offset_fsb,
 	xfs_fileoff_t			end_fsb)
 {
-	struct xfs_bmbt_irec		irec;
-	xfs_filblks_t			count_fsb;
+	struct xfs_ifork		*ifp = XFS_IFORK_PTR(ip, XFS_COW_FORK);
+	struct xfs_bmbt_irec		got, prev, del;
+	xfs_extnum_t			idx;
 	xfs_fsblock_t			firstfsb;
 	struct xfs_defer_ops		dfops;
-	int				error = 0;
-	int				nimaps;
+	int				error = 0, eof = 0;
 
 	if (!xfs_is_reflink_inode(ip))
 		return 0;
 
-	/* Go find the old extent in the CoW fork. */
-	while (offset_fsb < end_fsb) {
-		nimaps = 1;
-		count_fsb = (xfs_filblks_t)(end_fsb - offset_fsb);
-		error = xfs_bmapi_read(ip, offset_fsb, count_fsb, &irec,
-				&nimaps, XFS_BMAPI_COWFORK);
-		if (error)
-			break;
-		ASSERT(nimaps == 1);
+	xfs_bmap_search_extents(ip, offset_fsb, XFS_COW_FORK, &eof, &idx,
+			&got, &prev);
+	if (eof)
+		return 0;
 
-		trace_xfs_reflink_cancel_cow(ip, &irec);
+	while (got.br_startoff < end_fsb) {
+		del = got;
+		xfs_trim_extent(&del, offset_fsb, end_fsb - offset_fsb);
+		trace_xfs_reflink_cancel_cow(ip, &del);
 
-		if (irec.br_startblock == DELAYSTARTBLOCK) {
-			/* Free a delayed allocation. */
-			xfs_mod_fdblocks(ip->i_mount, irec.br_blockcount,
-					false);
-			ip->i_delayed_blks -= irec.br_blockcount;
-
-			/* Remove the mapping from the CoW fork. */
-			error = xfs_bunmapi_cow(ip, &irec);
+		if (isnullstartblock(del.br_startblock)) {
+			error = xfs_bmap_del_extent_delay(ip, XFS_COW_FORK,
+					&idx, &got, &del);
 			if (error)
 				break;
-		} else if (irec.br_startblock == HOLESTARTBLOCK) {
-			/* empty */
 		} else {
 			xfs_trans_ijoin(*tpp, ip, 0);
 			xfs_defer_init(&dfops, &firstfsb);
 
 			/* Free the CoW orphan record. */
 			error = xfs_refcount_free_cow_extent(ip->i_mount,
-					&dfops, irec.br_startblock,
-					irec.br_blockcount);
+					&dfops, del.br_startblock,
+					del.br_blockcount);
 			if (error)
 				break;
 
 			xfs_bmap_add_free(ip->i_mount, &dfops,
-					irec.br_startblock, irec.br_blockcount,
+					del.br_startblock, del.br_blockcount,
 					NULL);
 
 			/* Update quota accounting */
 			xfs_trans_mod_dquot_byino(*tpp, ip, XFS_TRANS_DQ_BCOUNT,
-					-(long)irec.br_blockcount);
+					-(long)del.br_blockcount);
 
 			/* Roll the transaction */
 			error = xfs_defer_finish(tpp, &dfops, ip);
···
 			}
 
 			/* Remove the mapping from the CoW fork. */
-			error = xfs_bunmapi_cow(ip, &irec);
-			if (error)
-				break;
+			xfs_bmap_del_extent_cow(ip, &idx, &got, &del);
 		}
 
-		/* Roll on... */
-		offset_fsb = irec.br_startoff + irec.br_blockcount;
+		if (++idx >= ifp->if_bytes / sizeof(struct xfs_bmbt_rec))
+			break;
+		xfs_bmbt_get_all(xfs_iext_get_ext(ifp, idx), &got);
 	}
+
+	/* clear tag if cow fork is emptied */
+	if (!ifp->if_bytes)
+		xfs_inode_clear_cowblocks_tag(ip);
 
 	return error;
 }
···
 	xfs_off_t			offset,
 	xfs_off_t			count)
 {
-	struct xfs_bmbt_irec		irec;
-	struct xfs_bmbt_irec		uirec;
+	struct xfs_ifork		*ifp = XFS_IFORK_PTR(ip, XFS_COW_FORK);
+	struct xfs_bmbt_irec		got, prev, del;
 	struct xfs_trans		*tp;
 	xfs_fileoff_t			offset_fsb;
 	xfs_fileoff_t			end_fsb;
-	xfs_filblks_t			count_fsb;
 	xfs_fsblock_t			firstfsb;
 	struct xfs_defer_ops		dfops;
-	int				error;
+	int				error, eof = 0;
 	unsigned int			resblks;
-	xfs_filblks_t			ilen;
 	xfs_filblks_t			rlen;
-	int				nimaps;
+	xfs_extnum_t			idx;
 
 	trace_xfs_reflink_end_cow(ip, offset, count);
 
+	/* No COW extents?  That's easy! */
+	if (ifp->if_bytes == 0)
+		return 0;
+
 	offset_fsb = XFS_B_TO_FSBT(ip->i_mount, offset);
 	end_fsb = XFS_B_TO_FSB(ip->i_mount, offset + count);
-	count_fsb = (xfs_filblks_t)(end_fsb - offset_fsb);
 
 	/* Start a rolling transaction to switch the mappings */
 	resblks = XFS_EXTENTADD_SPACE_RES(ip->i_mount, XFS_DATA_FORK);
···
 	xfs_ilock(ip, XFS_ILOCK_EXCL);
 	xfs_trans_ijoin(tp, ip, 0);
 
-	/* Go find the old extent in the CoW fork. */
-	while (offset_fsb < end_fsb) {
-		/* Read extent from the source file */
-		nimaps = 1;
-		count_fsb = (xfs_filblks_t)(end_fsb - offset_fsb);
-		error = xfs_bmapi_read(ip, offset_fsb, count_fsb, &irec,
-				&nimaps, XFS_BMAPI_COWFORK);
-		if (error)
-			goto out_cancel;
-		ASSERT(nimaps == 1);
+	xfs_bmap_search_extents(ip, end_fsb - 1, XFS_COW_FORK, &eof, &idx,
+			&got, &prev);
 
-		ASSERT(irec.br_startblock != DELAYSTARTBLOCK);
-		trace_xfs_reflink_cow_remap(ip, &irec);
+	/* If there is a hole at end_fsb - 1 go to the previous extent */
+	if (eof || got.br_startoff > end_fsb) {
+		ASSERT(idx > 0);
+		xfs_bmbt_get_all(xfs_iext_get_ext(ifp, --idx), &got);
+	}
 
-		/*
-		 * We can have a hole in the CoW fork if part of a directio
-		 * write is CoW but part of it isn't.
-		 */
-		rlen = ilen = irec.br_blockcount;
-		if (irec.br_startblock == HOLESTARTBLOCK)
+	/* Walk backwards until we're out of the I/O range... */
+	while (got.br_startoff + got.br_blockcount > offset_fsb) {
+		del = got;
+		xfs_trim_extent(&del, offset_fsb, end_fsb - offset_fsb);
+
+		/* Extent delete may have bumped idx forward */
+		if (!del.br_blockcount) {
+			idx--;
 			goto next_extent;
-
-		/* Unmap the old blocks in the data fork. */
-		while (rlen) {
-			xfs_defer_init(&dfops, &firstfsb);
-			error = __xfs_bunmapi(tp, ip, irec.br_startoff,
-					&rlen, 0, 1, &firstfsb, &dfops);
-			if (error)
-				goto out_defer;
-
-			/*
-			 * Trim the extent to whatever got unmapped.
-			 * Remember, bunmapi works backwards.
-			 */
-			uirec.br_startblock = irec.br_startblock + rlen;
-			uirec.br_startoff = irec.br_startoff + rlen;
-			uirec.br_blockcount = irec.br_blockcount - rlen;
-			irec.br_blockcount = rlen;
-			trace_xfs_reflink_cow_remap_piece(ip, &uirec);
-
-			/* Free the CoW orphan record. */
-			error = xfs_refcount_free_cow_extent(tp->t_mountp,
-					&dfops, uirec.br_startblock,
-					uirec.br_blockcount);
-			if (error)
-				goto out_defer;
-
-			/* Map the new blocks into the data fork. */
-			error = xfs_bmap_map_extent(tp->t_mountp, &dfops,
-					ip, &uirec);
-			if (error)
-				goto out_defer;
-
-			/* Remove the mapping from the CoW fork. */
-			error = xfs_bunmapi_cow(ip, &uirec);
-			if (error)
-				goto out_defer;
-
-			error = xfs_defer_finish(&tp, &dfops, ip);
-			if (error)
-				goto out_defer;
 		}
 
+		ASSERT(!isnullstartblock(got.br_startblock));
+
+		/* Unmap the old blocks in the data fork. */
+		xfs_defer_init(&dfops, &firstfsb);
+		rlen = del.br_blockcount;
+		error = __xfs_bunmapi(tp, ip, del.br_startoff, &rlen, 0, 1,
+				&firstfsb, &dfops);
+		if (error)
+			goto out_defer;
+
+		/* Trim the extent to whatever got unmapped. */
+		if (rlen) {
+			xfs_trim_extent(&del, del.br_startoff + rlen,
+				del.br_blockcount - rlen);
+		}
+		trace_xfs_reflink_cow_remap(ip, &del);
+
+		/* Free the CoW orphan record. */
+		error = xfs_refcount_free_cow_extent(tp->t_mountp, &dfops,
+				del.br_startblock, del.br_blockcount);
+		if (error)
+			goto out_defer;
+
+		/* Map the new blocks into the data fork. */
+		error = xfs_bmap_map_extent(tp->t_mountp, &dfops, ip, &del);
+		if (error)
+			goto out_defer;
+
+		/* Remove the mapping from the CoW fork. */
+		xfs_bmap_del_extent_cow(ip, &idx, &got, &del);
+
+		error = xfs_defer_finish(&tp, &dfops, ip);
+		if (error)
+			goto out_defer;
+
 next_extent:
-		/* Roll on... */
-		offset_fsb = irec.br_startoff + ilen;
+		if (idx < 0)
+			break;
+		xfs_bmbt_get_all(xfs_iext_get_ext(ifp, idx), &got);
 	}
 
 	error = xfs_trans_commit(tp);
···
 
 out_defer:
 	xfs_defer_cancel(&dfops);
-out_cancel:
 	xfs_trans_cancel(tp);
 	xfs_iunlock(ip, XFS_ILOCK_EXCL);
 out:
···
  */
 int
 xfs_reflink_remap_range(
-	struct xfs_inode	*src,
-	xfs_off_t		srcoff,
-	struct xfs_inode	*dest,
-	xfs_off_t		destoff,
-	xfs_off_t		len,
-	unsigned int		flags)
+	struct file		*file_in,
+	loff_t			pos_in,
+	struct file		*file_out,
+	loff_t			pos_out,
+	u64			len,
+	bool			is_dedupe)
 {
+	struct inode		*inode_in = file_inode(file_in);
+	struct xfs_inode	*src = XFS_I(inode_in);
+	struct inode		*inode_out = file_inode(file_out);
+	struct xfs_inode	*dest = XFS_I(inode_out);
 	struct xfs_mount	*mp = src->i_mount;
+	loff_t			bs = inode_out->i_sb->s_blocksize;
+	bool			same_inode = (inode_in == inode_out);
 	xfs_fileoff_t		sfsbno, dfsbno;
 	xfs_filblks_t		fsblen;
-	int			error;
 	xfs_extlen_t		cowextsize;
-	bool			is_same;
+	loff_t			isize;
+	ssize_t			ret;
+	loff_t			blen;
 
 	if (!xfs_sb_version_hasreflink(&mp->m_sb))
 		return -EOPNOTSUPP;
···
 	if (XFS_FORCED_SHUTDOWN(mp))
 		return -EIO;
 
-	/* Don't reflink realtime inodes */
-	if (XFS_IS_REALTIME_INODE(src) || XFS_IS_REALTIME_INODE(dest))
-		return -EINVAL;
-
-	if (flags & ~XFS_REFLINK_ALL)
-		return -EINVAL;
-
-	trace_xfs_reflink_remap_range(src, srcoff, len, dest, destoff);
-
 	/* Lock both files against IO */
-	if (src->i_ino == dest->i_ino) {
+	if (same_inode) {
 		xfs_ilock(src, XFS_IOLOCK_EXCL);
 		xfs_ilock(src, XFS_MMAPLOCK_EXCL);
 	} else {
···
 		xfs_lock_two_inodes(src, dest, XFS_MMAPLOCK_EXCL);
 	}
 
+	/* Don't touch certain kinds of inodes */
+	ret = -EPERM;
+	if (IS_IMMUTABLE(inode_out))
+		goto out_unlock;
+
+	ret = -ETXTBSY;
+	if (IS_SWAPFILE(inode_in) || IS_SWAPFILE(inode_out))
+		goto out_unlock;
+
+
+	/* Don't reflink dirs, pipes, sockets... */
+	ret = -EISDIR;
+	if (S_ISDIR(inode_in->i_mode) || S_ISDIR(inode_out->i_mode))
+		goto out_unlock;
+	ret = -EINVAL;
+	if (S_ISFIFO(inode_in->i_mode) || S_ISFIFO(inode_out->i_mode))
+		goto out_unlock;
+	if (!S_ISREG(inode_in->i_mode) || !S_ISREG(inode_out->i_mode))
+		goto out_unlock;
+
+	/* Don't reflink realtime inodes */
+	if (XFS_IS_REALTIME_INODE(src) || XFS_IS_REALTIME_INODE(dest))
+		goto out_unlock;
+
+	/* Don't share DAX file data for now. */
+	if (IS_DAX(inode_in) || IS_DAX(inode_out))
+		goto out_unlock;
+
+	/* Are we going all the way to the end? */
+	isize = i_size_read(inode_in);
+	if (isize == 0) {
+		ret = 0;
+		goto out_unlock;
+	}
+
+	if (len == 0)
+		len = isize - pos_in;
+
+	/* Ensure offsets don't wrap and the input is inside i_size */
+	if (pos_in + len < pos_in || pos_out + len < pos_out ||
+	    pos_in + len > isize)
+		goto out_unlock;
+
+	/* Don't allow dedupe past EOF in the dest file */
+	if (is_dedupe) {
+		loff_t	disize;
+
+		disize = i_size_read(inode_out);
+		if (pos_out >= disize || pos_out + len > disize)
+			goto out_unlock;
+	}
+
+	/* If we're linking to EOF, continue to the block boundary. */
+	if (pos_in + len == isize)
+		blen = ALIGN(isize, bs) - pos_in;
+	else
+		blen = len;
+
+	/* Only reflink if we're aligned to block boundaries */
+	if (!IS_ALIGNED(pos_in, bs) || !IS_ALIGNED(pos_in + blen, bs) ||
+	    !IS_ALIGNED(pos_out, bs) || !IS_ALIGNED(pos_out + blen, bs))
+		goto out_unlock;
+
+	/* Don't allow overlapped reflink within the same file */
+	if (same_inode) {
+		if (pos_out + blen > pos_in && pos_out < pos_in + blen)
+			goto out_unlock;
+	}
+
+	/* Wait for the completion of any pending IOs on both files */
+	inode_dio_wait(inode_in);
+	if (!same_inode)
+		inode_dio_wait(inode_out);
+
+	ret = filemap_write_and_wait_range(inode_in->i_mapping,
+			pos_in, pos_in + len - 1);
+	if (ret)
+		goto out_unlock;
+
+	ret = filemap_write_and_wait_range(inode_out->i_mapping,
+			pos_out, pos_out + len - 1);
+	if (ret)
+		goto out_unlock;
+
+	trace_xfs_reflink_remap_range(src, pos_in, len, dest, pos_out);
+
 	/*
 	 * Check that the extents are the same.
 	 */
-	if (flags & XFS_REFLINK_DEDUPE) {
-		is_same = false;
-		error = xfs_compare_extents(VFS_I(src), srcoff, VFS_I(dest),
-				destoff, len, &is_same);
-		if (error)
-			goto out_error;
+	if (is_dedupe) {
+		bool		is_same = false;
+
+		ret = xfs_compare_extents(inode_in, pos_in, inode_out, pos_out,
+				len, &is_same);
+		if (ret)
+			goto out_unlock;
 		if (!is_same) {
-			error = -EBADE;
-			goto out_error;
+			ret = -EBADE;
+			goto out_unlock;
 		}
 	}
 
-	error = xfs_reflink_set_inode_flag(src, dest);
-	if (error)
-		goto out_error;
+	ret = xfs_reflink_set_inode_flag(src, dest);
+	if (ret)
+		goto out_unlock;
 
 	/*
 	 * Invalidate the page cache so that we can clear any CoW mappings
 	 * in the destination file.
 	 */
-	truncate_inode_pages_range(&VFS_I(dest)->i_data, destoff,
-				   PAGE_ALIGN(destoff + len) - 1);
+	truncate_inode_pages_range(&inode_out->i_data, pos_out,
+				   PAGE_ALIGN(pos_out + len) - 1);
 
-	dfsbno = XFS_B_TO_FSBT(mp, destoff);
-	sfsbno = XFS_B_TO_FSBT(mp, srcoff);
+	dfsbno = XFS_B_TO_FSBT(mp, pos_out);
+	sfsbno = XFS_B_TO_FSBT(mp, pos_in);
 	fsblen = XFS_B_TO_FSB(mp, len);
-	error = xfs_reflink_remap_blocks(src, sfsbno, dest, dfsbno, fsblen,
-			destoff + len);
-	if (error)
-		goto out_error;
+	ret = xfs_reflink_remap_blocks(src, sfsbno, dest, dfsbno, fsblen,
+			pos_out + len);
+	if (ret)
+		goto out_unlock;
 
 	/*
 	 * Carry the cowextsize hint from src to dest if we're sharing the
···
 	 * has a cowextsize hint, and the destination file does not.
 	 */
 	cowextsize = 0;
-	if (srcoff == 0 && len == i_size_read(VFS_I(src)) &&
+	if (pos_in == 0 && len == i_size_read(inode_in) &&
 	    (src->i_d.di_flags2 & XFS_DIFLAG2_COWEXTSIZE) &&
-	    destoff == 0 && len >= i_size_read(VFS_I(dest)) &&
+	    pos_out == 0 && len >= i_size_read(inode_out) &&
 	    !(dest->i_d.di_flags2 & XFS_DIFLAG2_COWEXTSIZE))
 		cowextsize = src->i_d.di_cowextsize;
 
-	error = xfs_reflink_update_dest(dest, destoff + len, cowextsize);
-	if (error)
-		goto out_error;
+	ret = xfs_reflink_update_dest(dest, pos_out + len, cowextsize);
 
-out_error:
+out_unlock:
 	xfs_iunlock(src, XFS_MMAPLOCK_EXCL);
 	xfs_iunlock(src, XFS_IOLOCK_EXCL);
 	if (src->i_ino != dest->i_ino) {
 		xfs_iunlock(dest, XFS_MMAPLOCK_EXCL);
 		xfs_iunlock(dest, XFS_IOLOCK_EXCL);
 	}
-	if (error)
-		trace_xfs_reflink_remap_range_error(dest, error, _RET_IP_);
-	return error;
+	if (ret)
+		trace_xfs_reflink_remap_range_error(dest, ret, _RET_IP_);
+	return ret;
 }
 
 /*

fs/xfs/xfs_reflink.h

···
 extern int xfs_reflink_trim_around_shared(struct xfs_inode *ip,
 		struct xfs_bmbt_irec *irec, bool *shared, bool *trimmed);
 
-extern int xfs_reflink_reserve_cow_range(struct xfs_inode *ip,
-		xfs_off_t offset, xfs_off_t count);
+extern int xfs_reflink_reserve_cow(struct xfs_inode *ip,
+		struct xfs_bmbt_irec *imap, bool *shared);
 extern int xfs_reflink_allocate_cow_range(struct xfs_inode *ip,
 		xfs_off_t offset, xfs_off_t count);
 extern bool xfs_reflink_find_cow_mapping(struct xfs_inode *ip, xfs_off_t offset,
···
 extern int xfs_reflink_end_cow(struct xfs_inode *ip, xfs_off_t offset,
 		xfs_off_t count);
 extern int xfs_reflink_recover_cow(struct xfs_mount *mp);
-#define XFS_REFLINK_DEDUPE	1	/* only reflink if contents match */
-#define XFS_REFLINK_ALL		(XFS_REFLINK_DEDUPE)
-extern int xfs_reflink_remap_range(struct xfs_inode *src, xfs_off_t srcoff,
-		struct xfs_inode *dest, xfs_off_t destoff, xfs_off_t len,
-		unsigned int flags);
+extern int xfs_reflink_remap_range(struct file *file_in, loff_t pos_in,
+		struct file *file_out, loff_t pos_out, u64 len, bool is_dedupe);
 extern int xfs_reflink_clear_inode_flag(struct xfs_inode *ip,
 		struct xfs_trans **tpp);
 extern int xfs_reflink_unshare(struct xfs_inode *ip, xfs_off_t offset,

fs/xfs/xfs_sysfs.c

···
 };
 
 
-struct kobj_type xfs_error_cfg_ktype = {
+static struct kobj_type xfs_error_cfg_ktype = {
 	.release = xfs_sysfs_release,
 	.sysfs_ops = &xfs_sysfs_ops,
 	.default_attrs = xfs_error_attrs,
 };
 
-struct kobj_type xfs_error_ktype = {
+static struct kobj_type xfs_error_ktype = {
 	.release = xfs_sysfs_release,
 	.sysfs_ops = &xfs_sysfs_ops,
 };

fs/xfs/xfs_trace.h

···
 DEFINE_INODE_IREC_EVENT(xfs_reflink_cow_found);
 DEFINE_INODE_IREC_EVENT(xfs_reflink_cow_enospc);
 
-DEFINE_RW_EVENT(xfs_reflink_reserve_cow_range);
+DEFINE_RW_EVENT(xfs_reflink_reserve_cow);
 DEFINE_RW_EVENT(xfs_reflink_allocate_cow_range);
 
 DEFINE_INODE_IREC_EVENT(xfs_reflink_bounce_dio_write);
···
 DEFINE_SIMPLE_IO_EVENT(xfs_reflink_cancel_cow_range);
 DEFINE_SIMPLE_IO_EVENT(xfs_reflink_end_cow);
 DEFINE_INODE_IREC_EVENT(xfs_reflink_cow_remap);
-DEFINE_INODE_IREC_EVENT(xfs_reflink_cow_remap_piece);
 
-DEFINE_INODE_ERROR_EVENT(xfs_reflink_reserve_cow_range_error);
 DEFINE_INODE_ERROR_EVENT(xfs_reflink_allocate_cow_range_error);
 DEFINE_INODE_ERROR_EVENT(xfs_reflink_cancel_cow_range_error);
 DEFINE_INODE_ERROR_EVENT(xfs_reflink_end_cow_error);

include/asm-generic/export.h

···
 #include <generated/autoksyms.h>
 
 #define __EXPORT_SYMBOL(sym, val, sec)				\
-	__cond_export_sym(sym, val, sec, config_enabled(__KSYM_##sym))
+	__cond_export_sym(sym, val, sec, __is_defined(__KSYM_##sym))
 #define __cond_export_sym(sym, val, sec, conf)			\
 	___cond_export_sym(sym, val, sec, conf)
 #define ___cond_export_sym(sym, val, sec, enabled)		\

include/linux/acpi.h

···
 int acpi_pci_irq_enable (struct pci_dev *dev);
 void acpi_penalize_isa_irq(int irq, int active);
 bool acpi_isa_irq_available(int irq);
+void acpi_penalize_sci_irq(int irq, int trigger, int polarity);
 void acpi_pci_irq_disable (struct pci_dev *dev);
 
 extern int ec_read(u8 addr, u8 *val);

include/linux/clk-provider.h

···
  * routines, one at of_clk_init(), and one at platform device probe
  */
 #define CLK_OF_DECLARE_DRIVER(name, compat, fn) \
-	static void name##_of_clk_init_driver(struct device_node *np)	\
+	static void __init name##_of_clk_init_driver(struct device_node *np) \
 	{								\
 		of_node_clear_flag(np, OF_POPULATED);			\
 		fn(np);							\

include/linux/io.h

···
 void *memremap(resource_size_t offset, size_t size, unsigned long flags);
 void memunmap(void *addr);
 
+/*
+ * On x86 PAT systems we have memory tracking that keeps track of
+ * the allowed mappings on memory ranges. This tracking works for
+ * all the in-kernel mapping APIs (ioremap*), but where the user
+ * wishes to map a range from a physical device into user memory
+ * the tracking won't be updated. This API is to be used by
+ * drivers which remap physical device pages into userspace,
+ * and wants to make sure they are mapped WC and not UC.
+ */
+#ifndef arch_io_reserve_memtype_wc
+static inline int arch_io_reserve_memtype_wc(resource_size_t base,
+					     resource_size_t size)
+{
+	return 0;
+}
+
+static inline void arch_io_free_memtype_wc(resource_size_t base,
+					   resource_size_t size)
+{
+}
+#endif
+
 #endif /* _LINUX_IO_H */

include/linux/iomap.h

···
 #define IOMAP_UNWRITTEN	0x04	/* blocks allocated @blkno in unwritten state */
 
 /*
- * Flags for iomap mappings:
+ * Flags for all iomap mappings:
  */
-#define IOMAP_F_MERGED	0x01	/* contains multiple blocks/extents */
-#define IOMAP_F_SHARED	0x02	/* block shared with another file */
-#define IOMAP_F_NEW	0x04	/* blocks have been newly allocated */
+#define IOMAP_F_NEW	0x01	/* blocks have been newly allocated */
+
+/*
+ * Flags that only need to be reported for IOMAP_REPORT requests:
+ */
+#define IOMAP_F_MERGED	0x10	/* contains multiple blocks/extents */
+#define IOMAP_F_SHARED	0x20	/* block shared with another file */
 
 /*
  * Magic value for blkno:
···
 /*
  * Flags for iomap_begin / iomap_end.  No flag implies a read.
  */
-#define IOMAP_WRITE		(1 << 0)
-#define IOMAP_ZERO		(1 << 1)
+#define IOMAP_WRITE		(1 << 0) /* writing, must allocate blocks */
+#define IOMAP_ZERO		(1 << 1) /* zeroing operation, may skip holes */
+#define IOMAP_REPORT		(1 << 2) /* report extent status, e.g. FIEMAP */
 
 struct iomap_ops {
 	/*

include/linux/kconfig.h

···
  * When CONFIG_BOOGER is not defined, we generate a (... 1, 0) pair, and when
  * the last step cherry picks the 2nd arg, we get a zero.
  */
-#define config_enabled(cfg)		___is_defined(cfg)
 #define __is_defined(x)			___is_defined(x)
 #define ___is_defined(val)		____is_defined(__ARG_PLACEHOLDER_##val)
 #define ____is_defined(arg1_or_junk)	__take_second_arg(arg1_or_junk 1, 0)
···
  * otherwise. For boolean options, this is equivalent to
  * IS_ENABLED(CONFIG_FOO).
  */
-#define IS_BUILTIN(option) config_enabled(option)
+#define IS_BUILTIN(option) __is_defined(option)
 
 /*
  * IS_MODULE(CONFIG_FOO) evaluates to 1 if CONFIG_FOO is set to 'm', 0
  * otherwise.
  */
-#define IS_MODULE(option) config_enabled(option##_MODULE)
+#define IS_MODULE(option) __is_defined(option##_MODULE)
 
 /*
  * IS_REACHABLE(CONFIG_FOO) evaluates to 1 if the currently compiled

include/linux/mm.h

···
 extern int access_remote_vm(struct mm_struct *mm, unsigned long addr,
 		void *buf, int len, unsigned int gup_flags);
 
-long __get_user_pages(struct task_struct *tsk, struct mm_struct *mm,
-		      unsigned long start, unsigned long nr_pages,
-		      unsigned int foll_flags, struct page **pages,
-		      struct vm_area_struct **vmas, int *nonblocking);
 long get_user_pages_remote(struct task_struct *tsk, struct mm_struct *mm,
 			    unsigned long start, unsigned long nr_pages,
 			    unsigned int gup_flags, struct page **pages,

include/linux/mmzone.h

···
 	seqlock_t		span_seqlock;
 #endif
 
-	/*
-	 * wait_table		-- the array holding the hash table
-	 * wait_table_hash_nr_entries	-- the size of the hash table array
-	 * wait_table_bits	-- wait_table_size == (1 << wait_table_bits)
-	 *
-	 * The purpose of all these is to keep track of the people
-	 * waiting for a page to become available and make them
-	 * runnable again when possible. The trouble is that this
-	 * consumes a lot of space, especially when so few things
-	 * wait on pages at a given time. So instead of using
-	 * per-page waitqueues, we use a waitqueue hash table.
-	 *
-	 * The bucket discipline is to sleep on the same queue when
-	 * colliding and wake all in that wait queue when removing.
-	 * When something wakes, it must check to be sure its page is
-	 * truly available, a la thundering herd. The cost of a
-	 * collision is great, but given the expected load of the
-	 * table, they should be so rare as to be outweighed by the
-	 * benefits from the saved space.
-	 *
-	 * __wait_on_page_locked() and unlock_page() in mm/filemap.c, are the
-	 * primary users of these fields, and in mm/page_alloc.c
-	 * free_area_init_core() performs the initialization of them.
-	 */
-	wait_queue_head_t	*wait_table;
-	unsigned long		wait_table_hash_nr_entries;
-	unsigned long		wait_table_bits;
+	int initialized;
 
 	/* Write-intensive fields used from the page allocator */
 	ZONE_PADDING(_pad1_)
···
 
 static inline bool zone_is_initialized(struct zone *zone)
 {
-	return !!zone->wait_table;
+	return zone->initialized;
 }
 
 static inline bool zone_is_empty(struct zone *zone)

include/linux/perf_event.h

···
 extern void perf_event_enable(struct perf_event *event);
 extern void perf_event_disable(struct perf_event *event);
 extern void perf_event_disable_local(struct perf_event *event);
+extern void perf_event_disable_inatomic(struct perf_event *event);
 extern void perf_event_task_tick(void);
 #else /* !CONFIG_PERF_EVENTS: */
 static inline void *

ipc/msgutil.c

···
 	size_t alen;
 
 	alen = min(len, DATALEN_MSG);
-	msg = kmalloc(sizeof(*msg) + alen, GFP_KERNEL);
+	msg = kmalloc(sizeof(*msg) + alen, GFP_KERNEL_ACCOUNT);
 	if (msg == NULL)
 		return NULL;
 
···
 	while (len > 0) {
 		struct msg_msgseg *seg;
 		alen = min(len, DATALEN_SEG);
-		seg = kmalloc(sizeof(*seg) + alen, GFP_KERNEL);
+		seg = kmalloc(sizeof(*seg) + alen, GFP_KERNEL_ACCOUNT);
 		if (seg == NULL)
 			goto out_err;
 		*pseg = seg;

kernel/events/core.c

···
 }
 EXPORT_SYMBOL_GPL(perf_event_disable);
 
+void perf_event_disable_inatomic(struct perf_event *event)
+{
+	event->pending_disable = 1;
+	irq_work_queue(&event->pending);
+}
+
 static void perf_set_shadow_time(struct perf_event *event,
 				 struct perf_event_context *ctx,
 				 u64 tstamp)
···
 	if (events && atomic_dec_and_test(&event->event_limit)) {
 		ret = 1;
 		event->pending_kill = POLL_HUP;
-		event->pending_disable = 1;
-		irq_work_queue(&event->pending);
+
+		perf_event_disable_inatomic(event);
 	}
 
 	READ_ONCE(event->overflow_handler)(event, data, regs);
···
 
 void perf_pmu_unregister(struct pmu *pmu)
 {
+	int remove_device;
+
 	mutex_lock(&pmus_lock);
+	remove_device = pmu_bus_running;
 	list_del_rcu(&pmu->entry);
 	mutex_unlock(&pmus_lock);
 
···
 	free_percpu(pmu->pmu_disable_count);
 	if (pmu->type >= PERF_TYPE_MAX)
 		idr_remove(&pmu_idr, pmu->type);
-	if (pmu->nr_addr_filters)
-		device_remove_file(pmu->dev, &dev_attr_nr_addr_filters);
-	device_del(pmu->dev);
-	put_device(pmu->dev);
+	if (remove_device) {
+		if (pmu->nr_addr_filters)
+			device_remove_file(pmu->dev, &dev_attr_nr_addr_filters);
+		device_del(pmu->dev);
+		put_device(pmu->dev);
+	}
 	free_pmu_context(pmu);
 }
 EXPORT_SYMBOL_GPL(perf_pmu_unregister);

kernel/kcov.c

···
 	/*
 	 * We are interested in code coverage as a function of a syscall inputs,
 	 * so we ignore code executed in interrupts.
+	 * The checks for whether we are in an interrupt are open-coded, because
+	 * 1. We can't use in_interrupt() here, since it also returns true
+	 *    when we are inside local_bh_disable() section.
+	 * 2. We don't want to use (in_irq() | in_serving_softirq() | in_nmi()),
+	 *    since that leads to slower generated code (three separate tests,
+	 *    one for each of the flags).
 	 */
-	if (!t || in_interrupt())
+	if (!t || (preempt_count() & (HARDIRQ_MASK | SOFTIRQ_OFFSET
+							| NMI_MASK)))
 		return;
 	mode = READ_ONCE(t->kcov_mode);
 	if (mode == KCOV_MODE_TRACE) {

kernel/power/suspend.c

···
 
 #ifndef CONFIG_SUSPEND_SKIP_SYNC
 	trace_suspend_resume(TPS("sync_filesystems"), 0, true);
-	printk(KERN_INFO "PM: Syncing filesystems ... ");
+	pr_info("PM: Syncing filesystems ... ");
 	sys_sync();
-	printk("done.\n");
+	pr_cont("done.\n");
 	trace_suspend_resume(TPS("sync_filesystems"), 0, false);
 #endif
 

kernel/sched/core.c

···
 DECLARE_PER_CPU(cpumask_var_t, load_balance_mask);
 DECLARE_PER_CPU(cpumask_var_t, select_idle_mask);
 
+#define WAIT_TABLE_BITS 8
+#define WAIT_TABLE_SIZE (1 << WAIT_TABLE_BITS)
+static wait_queue_head_t bit_wait_table[WAIT_TABLE_SIZE] __cacheline_aligned;
+
+wait_queue_head_t *bit_waitqueue(void *word, int bit)
+{
+	const int shift = BITS_PER_LONG == 32 ? 5 : 6;
+	unsigned long val = (unsigned long)word << shift | bit;
+
+	return bit_wait_table + hash_long(val, WAIT_TABLE_BITS);
+}
+EXPORT_SYMBOL(bit_waitqueue);
+
 void __init sched_init(void)
 {
 	int i, j;
 	unsigned long alloc_size = 0, ptr;
+
+	for (i = 0; i < WAIT_TABLE_SIZE; i++)
+		init_waitqueue_head(bit_wait_table + i);
 
 #ifdef CONFIG_FAIR_GROUP_SCHED
 	alloc_size += 2 * nr_cpu_ids * sizeof(void **);

kernel/sched/fair.c

···
 {
 	struct sched_entity *se;
 	struct cfs_rq *cfs_rq;
-	struct rq *rq;
 	int i;
 
 	tg->cfs_rq = kzalloc(sizeof(cfs_rq) * nr_cpu_ids, GFP_KERNEL);
···
 	init_cfs_bandwidth(tg_cfs_bandwidth(tg));
 
 	for_each_possible_cpu(i) {
-		rq = cpu_rq(i);
-
 		cfs_rq = kzalloc_node(sizeof(struct cfs_rq),
 				      GFP_KERNEL, cpu_to_node(i));
 		if (!cfs_rq)

kernel/sched/wait.c

···
 }
 EXPORT_SYMBOL(wake_up_bit);
 
-wait_queue_head_t *bit_waitqueue(void *word, int bit)
-{
-	const int shift = BITS_PER_LONG == 32 ? 5 : 6;
-	const struct zone *zone = page_zone(virt_to_page(word));
-	unsigned long val = (unsigned long)word << shift | bit;
-
-	return &zone->wait_table[hash_long(val, zone->wait_table_bits)];
-}
-EXPORT_SYMBOL(bit_waitqueue);
-
 /*
  * Manipulate the atomic_t address to produce a better bit waitqueue table hash
  * index (we're keying off bit -1, but that would produce a horrible hash

kernel/softirq.c

···
 DEFINE_PER_CPU(struct task_struct *, ksoftirqd);
 
 const char * const softirq_to_name[NR_SOFTIRQS] = {
-	"HI", "TIMER", "NET_TX", "NET_RX", "BLOCK", "BLOCK_IOPOLL",
+	"HI", "TIMER", "NET_TX", "NET_RX", "BLOCK", "IRQ_POLL",
 	"TASKLET", "SCHED", "HRTIMER", "RCU"
 };
 

kernel/time/timer.c

···
 
 #ifdef CONFIG_NO_HZ_COMMON
 static inline struct timer_base *
-__get_target_base(struct timer_base *base, unsigned tflags)
+get_target_base(struct timer_base *base, unsigned tflags)
 {
 #ifdef CONFIG_SMP
 	if ((tflags & TIMER_PINNED) || !base->migration_enabled)
···
 
 static inline void forward_timer_base(struct timer_base *base)
 {
+	unsigned long jnow = READ_ONCE(jiffies);
+
 	/*
 	 * We only forward the base when it's idle and we have a delta between
 	 * base clock and jiffies.
 	 */
-	if (!base->is_idle || (long) (jiffies - base->clk) < 2)
+	if (!base->is_idle || (long) (jnow - base->clk) < 2)
 		return;
 
 	/*
 	 * If the next expiry value is > jiffies, then we fast forward to
 	 * jiffies otherwise we forward to the next expiry value.
 	 */
-	if (time_after(base->next_expiry, jiffies))
-		base->clk = jiffies;
+	if (time_after(base->next_expiry, jnow))
+		base->clk = jnow;
 	else
 		base->clk = base->next_expiry;
 }
 #else
 static inline struct timer_base *
-__get_target_base(struct timer_base *base, unsigned tflags)
+get_target_base(struct timer_base *base, unsigned tflags)
 {
 	return get_timer_this_cpu_base(tflags);
 }
···
 static inline void forward_timer_base(struct timer_base *base) { }
 #endif
 
-static inline struct timer_base *
-get_target_base(struct timer_base *base, unsigned tflags)
-{
-	struct timer_base *target = __get_target_base(base, tflags);
-
-	forward_timer_base(target);
-	return target;
-}
 
 /*
  * We are using hashed locking: Holding per_cpu(timer_bases[x]).lock means
···
 {
 	for (;;) {
 		struct timer_base *base;
-		u32 tf = timer->flags;
+		u32 tf;
+
+		/*
+		 * We need to use READ_ONCE() here, otherwise the compiler
+		 * might re-read @tf between the check for TIMER_MIGRATING
+		 * and spin_lock().
+		 */
+		tf = READ_ONCE(timer->flags);
 
 		if (!(tf & TIMER_MIGRATING)) {
 			base = get_timer_base(tf);
···
 	unsigned long clk = 0, flags;
 	int ret = 0;
 
+	BUG_ON(!timer->function);
+
 	/*
 	 * This is a common optimization triggered by the networking code - if
 	 * the timer is re-modified to have the same timeout or ends up in the
···
 	if (timer_pending(timer)) {
 		if (timer->expires == expires)
 			return 1;
-		/*
-		 * Take the current timer_jiffies of base, but without holding
-		 * the lock!
-		 */
-		base = get_timer_base(timer->flags);
-		clk = base->clk;
 
+		/*
+		 * We lock timer base and calculate the bucket index right
+		 * here. If the timer ends up in the same bucket, then we
+		 * just update the expiry time and avoid the whole
+		 * dequeue/enqueue dance.
+		 */
+		base = lock_timer_base(timer, &flags);
+
+		clk = base->clk;
 		idx = calc_wheel_index(expires, clk);
 
 		/*
···
 		 */
 		if (idx == timer_get_idx(timer)) {
 			timer->expires = expires;
-			return 1;
+			ret = 1;
+			goto out_unlock;
 		}
+	} else {
+		base = lock_timer_base(timer, &flags);
 	}
 
 	timer_stats_timer_set_start_info(timer);
-	BUG_ON(!timer->function);
-
-	base = lock_timer_base(timer, &flags);
 
 	ret = detach_if_pending(timer, base, false);
 	if (!ret && pending_only)
···
 		}
 	}
 
+	/* Try to forward a stale timer base clock */
+	forward_timer_base(base);
+
 	timer->expires = expires;
 	/*
 	 * If 'idx' was calculated above and the base time did not advance
-	 * between calculating 'idx' and taking the lock, only enqueue_timer()
-	 * and trigger_dyntick_cpu() is required. Otherwise we need to
-	 * (re)calculate the wheel index via internal_add_timer().
+	 * between calculating 'idx' and possibly switching the base, only
+	 * enqueue_timer() and trigger_dyntick_cpu() is required. Otherwise
+	 * we need to (re)calculate the wheel index via
+	 * internal_add_timer().
 	 */
 	if (idx != UINT_MAX && clk == base->clk) {
 		enqueue_timer(base, timer, idx);
···
 	is_max_delta = (nextevt == base->clk + NEXT_TIMER_MAX_DELTA);
 	base->next_expiry = nextevt;
 	/*
-	 * We have a fresh next event. Check whether we can forward the base:
+	 * We have a fresh next event. Check whether we can forward the
+	 * base. We can only do that when @basej is past base->clk
+	 * otherwise we might rewind base->clk.
 	 */
-	if (time_after(nextevt, jiffies))
-		base->clk = jiffies;
-	else if (time_after(nextevt, base->clk))
-		base->clk = nextevt;
+	if (time_after(basej, base->clk)) {
+		if (time_after(nextevt, basej))
+			base->clk = basej;
+		else if (time_after(nextevt, base->clk))
+			base->clk = nextevt;
+	}
 
 	if (time_before_eq(nextevt, basej)) {
 		expires = basem;

lib/Kconfig.debug

···
 	int "Warn for stack frames larger than (needs gcc 4.4)"
 	range 0 8192
 	default 0 if KASAN
+	default 2048 if GCC_PLUGIN_LATENT_ENTROPY
 	default 1024 if !64BIT
 	default 2048 if 64BIT
 	help

lib/genalloc.c

···
 	struct gen_pool_chunk *chunk;
 	unsigned long addr = 0;
 	int order = pool->min_alloc_order;
-	int nbits, start_bit = 0, end_bit, remain;
+	int nbits, start_bit, end_bit, remain;
 
 #ifndef CONFIG_ARCH_HAVE_NMI_SAFE_CMPXCHG
 	BUG_ON(in_nmi());
···
 		if (size > atomic_read(&chunk->avail))
 			continue;
 
+		start_bit = 0;
 		end_bit = chunk_size(chunk) >> order;
 retry:
 		start_bit = algo(chunk->bits, end_bit, start_bit,

lib/stackdepot.c

···
 					STACK_ALLOC_ALIGN)
 #define STACK_ALLOC_INDEX_BITS (DEPOT_STACK_BITS - \
 		STACK_ALLOC_NULL_PROTECTION_BITS - STACK_ALLOC_OFFSET_BITS)
-#define STACK_ALLOC_SLABS_CAP 1024
+#define STACK_ALLOC_SLABS_CAP 8192
 #define STACK_ALLOC_MAX_SLABS \
 	(((1LL << (STACK_ALLOC_INDEX_BITS)) < STACK_ALLOC_SLABS_CAP) ? \
 	 (1LL << (STACK_ALLOC_INDEX_BITS)) : STACK_ALLOC_SLABS_CAP)

mm/Kconfig

···
 	bool "Allow for memory hot-add"
 	depends on SPARSEMEM || X86_64_ACPI_NUMA
 	depends on ARCH_ENABLE_MEMORY_HOTPLUG
-	depends on !KASAN
+	depends on COMPILE_TEST || !KASAN
 
 config MEMORY_HOTPLUG_SPARSE
 	def_bool y

mm/filemap.c

···
  */
 wait_queue_head_t *page_waitqueue(struct page *page)
 {
-	const struct zone *zone = page_zone(page);
-
-	return &zone->wait_table[hash_ptr(page, zone->wait_table_bits)];
+	return bit_waitqueue(page, 0);
 }
 EXPORT_SYMBOL(page_waitqueue);
 

mm/gup.c

···
  * instead of __get_user_pages. __get_user_pages should be used only if
  * you need some special @gup_flags.
  */
-long __get_user_pages(struct task_struct *tsk, struct mm_struct *mm,
+static long __get_user_pages(struct task_struct *tsk, struct mm_struct *mm,
 		unsigned long start, unsigned long nr_pages,
 		unsigned int gup_flags, struct page **pages,
 		struct vm_area_struct **vmas, int *nonblocking)
···
 	} while (nr_pages);
 	return i;
 }
-EXPORT_SYMBOL(__get_user_pages);
 
 bool vma_permits_fault(struct vm_area_struct *vma, unsigned int fault_flags)
 {

mm/kmemleak.c

···
 
 		read_lock(&tasklist_lock);
 		do_each_thread(g, p) {
-			scan_block(task_stack_page(p), task_stack_page(p) +
-				   THREAD_SIZE, NULL);
+			void *stack = try_get_task_stack(p);
+			if (stack) {
+				scan_block(stack, stack + THREAD_SIZE, NULL);
+				put_task_stack(p);
+			}
 		} while_each_thread(g, p);
 		read_unlock(&tasklist_lock);
 	}

mm/list_lru.c

···
 	err = memcg_init_list_lru(lru, memcg_aware);
 	if (err) {
 		kfree(lru->node);
+		/* Do this so a list_lru_destroy() doesn't crash: */
+		lru->node = NULL;
 		goto out;
 	}
 

mm/memcontrol.c

···
 		     current->flags & PF_EXITING))
 		goto force;
 
+	/*
+	 * Prevent unbounded recursion when reclaim operations need to
+	 * allocate memory. This might exceed the limits temporarily,
+	 * but we prefer facilitating memory reclaim and getting back
+	 * under the limit over triggering OOM kills in these cases.
+	 */
+	if (unlikely(current->flags & PF_MEMALLOC))
+		goto force;
+
 	if (unlikely(task_in_memcg_oom(current)))
 		goto nomem;
 

mm/memory_hotplug.c

···
 	unsigned long i, pfn, end_pfn, nr_pages;
 	int node = pgdat->node_id;
 	struct page *page;
-	struct zone *zone;
 
 	nr_pages = PAGE_ALIGN(sizeof(struct pglist_data)) >> PAGE_SHIFT;
 	page = virt_to_page(pgdat);
 
 	for (i = 0; i < nr_pages; i++, page++)
 		get_page_bootmem(node, page, NODE_INFO);
-
-	zone = &pgdat->node_zones[0];
-	for (; zone < pgdat->node_zones + MAX_NR_ZONES - 1; zone++) {
-		if (zone_is_initialized(zone)) {
-			nr_pages = zone->wait_table_hash_nr_entries
-				* sizeof(wait_queue_head_t);
-			nr_pages = PAGE_ALIGN(nr_pages) >> PAGE_SHIFT;
-			page = virt_to_page(zone->wait_table);
-
-			for (i = 0; i < nr_pages; i++, page++)
-				get_page_bootmem(node, page, NODE_INFO);
-		}
-	}
 
 	pfn = pgdat->node_start_pfn;
 	end_pfn = pgdat_end_pfn(pgdat);
···
 	unsigned long start_pfn = pgdat->node_start_pfn;
 	unsigned long end_pfn = start_pfn + pgdat->node_spanned_pages;
 	unsigned long pfn;
-	int i;
 
 	for (pfn = start_pfn; pfn < end_pfn; pfn += PAGES_PER_SECTION) {
 		unsigned long section_nr = pfn_to_section_nr(pfn);
···
 	 */
 	node_set_offline(nid);
 	unregister_one_node(nid);
-
-	/* free waittable in each zone */
-	for (i = 0; i < MAX_NR_ZONES; i++) {
-		struct zone *zone = pgdat->node_zones + i;
-
-		/*
-		 * wait_table may be allocated from boot memory,
-		 * here only free if it's allocated by vmalloc.
-		 */
-		if (is_vmalloc_addr(zone->wait_table)) {
-			vfree(zone->wait_table);
-			zone->wait_table = NULL;
-		}
-	}
 }
 EXPORT_SYMBOL(try_offline_node);
 

mm/nommu.c

···
 	return PAGE_SIZE << compound_order(page);
 }
 
-long __get_user_pages(struct task_struct *tsk, struct mm_struct *mm,
+static long __get_user_pages(struct task_struct *tsk, struct mm_struct *mm,
 		      unsigned long start, unsigned long nr_pages,
 		      unsigned int foll_flags, struct page **pages,
 		      struct vm_area_struct **vmas, int *nonblocking)

mm/page_alloc.c

···
 	}
 
 	*p = '\0';
-	printk("(%s) ", tmp);
+	printk(KERN_CONT "(%s) ", tmp);
 }
 
 /*
···
 			free_pcp += per_cpu_ptr(zone->pageset, cpu)->pcp.count;
 
 		show_node(zone);
-		printk("%s"
+		printk(KERN_CONT
+			"%s"
 			" free:%lukB"
 			" min:%lukB"
 			" low:%lukB"
···
 			K(zone_page_state(zone, NR_FREE_CMA_PAGES)));
 		printk("lowmem_reserve[]:");
 		for (i = 0; i < MAX_NR_ZONES; i++)
-			printk(" %ld", zone->lowmem_reserve[i]);
-		printk("\n");
+			printk(KERN_CONT " %ld", zone->lowmem_reserve[i]);
+		printk(KERN_CONT "\n");
 	}
 
 	for_each_populated_zone(zone) {
···
 		if (skip_free_areas_node(filter, zone_to_nid(zone)))
 			continue;
 		show_node(zone);
-		printk("%s: ", zone->name);
+		printk(KERN_CONT "%s: ", zone->name);
 
 		spin_lock_irqsave(&zone->lock, flags);
 		for (order = 0; order < MAX_ORDER; order++) {
···
 		}
 		spin_unlock_irqrestore(&zone->lock, flags);
 		for (order = 0; order < MAX_ORDER; order++) {
-			printk("%lu*%lukB ", nr[order], K(1UL) << order);
+			printk(KERN_CONT "%lu*%lukB ",
+			       nr[order], K(1UL) << order);
 			if (nr[order])
 				show_migration_types(types[order]);
 		}
-		printk("= %lukB\n", K(total));
+		printk(KERN_CONT "= %lukB\n", K(total));
 	}
 
 	hugetlb_show_meminfo();
···
 }
 
 /*
- * Helper functions to size the waitqueue hash table.
- * Essentially these want to choose hash table sizes sufficiently
- * large so that collisions trying to wait on pages are rare.
- * But in fact, the number of active page waitqueues on typical
- * systems is ridiculously low, less than 200. So this is even
- * conservative, even though it seems large.
- *
- * The constant PAGES_PER_WAITQUEUE specifies the ratio of pages to
- * waitqueues, i.e. the size of the waitq table given the number of pages.
- */
-#define PAGES_PER_WAITQUEUE	256
-
-#ifndef CONFIG_MEMORY_HOTPLUG
-static inline unsigned long wait_table_hash_nr_entries(unsigned long pages)
-{
-	unsigned long size = 1;
-
-	pages /= PAGES_PER_WAITQUEUE;
-
-	while (size < pages)
-		size <<= 1;
-
-	/*
-	 * Once we have dozens or even hundreds of threads sleeping
-	 * on IO we've got bigger problems than wait queue collision.
-	 * Limit the size of the wait table to a reasonable size.
-	 */
-	size = min(size, 4096UL);
-
-	return max(size, 4UL);
-}
-#else
-/*
- * A zone's size might be changed by hot-add, so it is not possible to determine
- * a suitable size for its wait_table.  So we use the maximum size now.
- *
- * The max wait table size = 4096 x sizeof(wait_queue_head_t).   ie:
- *
- *    i386 (preemption config)    : 4096 x 16 = 64Kbyte.
- *    ia64, x86-64 (no preemption): 4096 x 20 = 80Kbyte.
- *    ia64, x86-64 (preemption)   : 4096 x 24 = 96Kbyte.
- *
- * The maximum entries are prepared when a zone's memory is (512K + 256) pages
- * or more by the traditional way. (See above).  It equals:
- *
- *    i386, x86-64, powerpc(4K page size) : =  ( 2G + 1M)byte.
- *    ia64(16K page size)                 : =  ( 8G + 4M)byte.
- *    powerpc (64K page size)             : =  (32G +16M)byte.
- */
-static inline unsigned long wait_table_hash_nr_entries(unsigned long pages)
-{
-	return 4096UL;
-}
-#endif
-
-/*
- * This is an integer logarithm so that shifts can be used later
- * to extract the more random high bits from the multiplicative
- * hash function before the remainder is taken.
- */
-static inline unsigned long wait_table_bits(unsigned long size)
-{
-	return ffz(~size);
-}
-
-/*
  * Initially all pages are reserved - free ones are freed
  * up by free_all_bootmem() once the early boot process is
  * done. Non-atomic initialization, single-pass.
···
 			alloc_percpu(struct per_cpu_nodestat);
 }
 
-static noinline __ref
-int zone_wait_table_init(struct zone *zone, unsigned long zone_size_pages)
-{
-	int i;
-	size_t alloc_size;
-
-	/*
-	 * The per-page waitqueue mechanism uses hashed waitqueues
-	 * per zone.
-	 */
-	zone->wait_table_hash_nr_entries =
-		 wait_table_hash_nr_entries(zone_size_pages);
-	zone->wait_table_bits =
-		wait_table_bits(zone->wait_table_hash_nr_entries);
-	alloc_size = zone->wait_table_hash_nr_entries
-					* sizeof(wait_queue_head_t);
-
-	if (!slab_is_available()) {
-		zone->wait_table = (wait_queue_head_t *)
-			memblock_virt_alloc_node_nopanic(
-				alloc_size, zone->zone_pgdat->node_id);
-	} else {
-		/*
-		 * This case means that a zone whose size was 0 gets new memory
-		 * via memory hot-add.
-		 * But it may be the case that a new node was hot-added.  In
-		 * this case vmalloc() will not be able to use this new node's
-		 * memory - this wait_table must be initialized to use this new
-		 * node itself as well.
-		 * To use this new node's memory, further consideration will be
-		 * necessary.
-		 */
-		zone->wait_table = vmalloc(alloc_size);
-	}
-	if (!zone->wait_table)
-		return -ENOMEM;
-
-	for (i = 0; i < zone->wait_table_hash_nr_entries; ++i)
-		init_waitqueue_head(zone->wait_table + i);
-
-	return 0;
-}
-
 static __meminit void zone_pcp_init(struct zone *zone)
 {
 	/*
···
 					unsigned long size)
 {
 	struct pglist_data *pgdat = zone->zone_pgdat;
-	int ret;
-	ret = zone_wait_table_init(zone, size);
-	if (ret)
-		return ret;
+
 	pgdat->nr_zones = zone_idx(zone) + 1;
 
 	zone->zone_start_pfn = zone_start_pfn;
···
 			zone_start_pfn, (zone_start_pfn + size));
 
 	zone_init_free_lists(zone);
+	zone->initialized = 1;
 
 	return 0;
 }

mm/slab.c

···
 	spin_lock_init(&parent->list_lock);
 	parent->free_objects = 0;
 	parent->free_touched = 0;
+	parent->num_slabs = 0;
 }
 
 #define MAKE_LIST(cachep, listp, slab, nodeid)				\
···
 	 * guaranteed to be valid until irq is re-enabled, because it will be
 	 * freed after synchronize_sched().
 	 */
-	if (force_change)
+	if (old_shared && force_change)
 		synchronize_sched();
 
 fail:
···
 	for_each_kmem_cache_node(cachep, node, n) {
 		unsigned long active_objs = 0, num_objs = 0, free_objects = 0;
 		unsigned long active_slabs = 0, num_slabs = 0;
+		unsigned long num_slabs_partial = 0, num_slabs_free = 0;
+		unsigned long num_slabs_full;
 
 		spin_lock_irqsave(&n->list_lock, flags);
-		list_for_each_entry(page, &n->slabs_full, lru) {
-			active_objs += cachep->num;
-			active_slabs++;
-		}
+		num_slabs = n->num_slabs;
 		list_for_each_entry(page, &n->slabs_partial, lru) {
 			active_objs += page->active;
-			active_slabs++;
+			num_slabs_partial++;
 		}
 		list_for_each_entry(page, &n->slabs_free, lru)
-			num_slabs++;
+			num_slabs_free++;
 
 		free_objects += n->free_objects;
 		spin_unlock_irqrestore(&n->list_lock, flags);
 
-		num_slabs += active_slabs;
 		num_objs = num_slabs * cachep->num;
+		active_slabs = num_slabs - num_slabs_free;
+		num_slabs_full = num_slabs -
+			(num_slabs_partial + num_slabs_free);
+		active_objs += (num_slabs_full * cachep->num);
+
 		pr_warn("  node %d: slabs: %ld/%ld, objs: %ld/%ld, free: %ld\n",
 			node, active_slabs, num_slabs, active_objs, num_objs,
 			free_objects);
···
 
 		page = list_entry(p, struct page, lru);
 		list_del(&page->lru);
+		n->num_slabs--;
 		/*
 		 * Safe to drop the lock. The slab is no longer linked
 		 * to the cache.
···
 		list_add_tail(&page->lru, &(n->slabs_free));
 	else
 		fixup_slab_list(cachep, n, page, &list);
+
+	n->num_slabs++;
 	STATS_INC_GROWN(cachep);
 	n->free_objects += cachep->num - page->active;
 	spin_unlock(&n->list_lock);
···
 
 		page = list_last_entry(&n->slabs_free, struct page, lru);
 		list_move(&page->lru, list);
+		n->num_slabs--;
 	}
 }
 
···
 	unsigned long num_objs;
 	unsigned long active_slabs = 0;
 	unsigned long num_slabs, free_objects = 0, shared_avail = 0;
+	unsigned long num_slabs_partial = 0, num_slabs_free = 0;
+	unsigned long num_slabs_full = 0;
 	const char *name;
 	char *error = NULL;
 	int node;
···
 		check_irq_on();
 		spin_lock_irq(&n->list_lock);
 
-		list_for_each_entry(page, &n->slabs_full, lru) {
-			if (page->active != cachep->num && !error)
-				error = "slabs_full accounting error";
-			active_objs += cachep->num;
-			active_slabs++;
-		}
+		num_slabs += n->num_slabs;
+
 		list_for_each_entry(page, &n->slabs_partial, lru) {
 			if (page->active == cachep->num && !error)
 				error = "slabs_partial accounting error";
 			if (!page->active && !error)
 				error = "slabs_partial accounting error";
 			active_objs += page->active;
-			active_slabs++;
+			num_slabs_partial++;
 		}
+
 		list_for_each_entry(page, &n->slabs_free, lru) {
 			if (page->active && !error)
 				error = "slabs_free accounting error";
-			num_slabs++;
+			num_slabs_free++;
 		}
+
 		free_objects += n->free_objects;
 		if (n->shared)
 			shared_avail += n->shared->avail;
 
 		spin_unlock_irq(&n->list_lock);
 	}
-	num_slabs += active_slabs;
 	num_objs = num_slabs * cachep->num;
+	active_slabs = num_slabs - num_slabs_free;
+	num_slabs_full = num_slabs - (num_slabs_partial + num_slabs_free);
+	active_objs += (num_slabs_full * cachep->num);
+
 	if (num_objs - active_objs != free_objects && !error)
 		error = "free_objects accounting error";
 

mm/slab.h

···
 	struct list_head slabs_partial;	/* partial list first, better asm code */
 	struct list_head slabs_full;
 	struct list_head slabs_free;
+	unsigned long num_slabs;
 	unsigned long free_objects;
 	unsigned int free_limit;
 	unsigned int colour_next;	/* Per-node cache coloring */

mm/vmscan.c

···
 					    sc.gfp_mask,
 					    sc.reclaim_idx);
 
+	current->flags |= PF_MEMALLOC;
 	nr_reclaimed = do_try_to_free_pages(zonelist, &sc);
+	current->flags &= ~PF_MEMALLOC;
 
 	trace_mm_vmscan_memcg_reclaim_end(nr_reclaimed);
 

security/keys/Kconfig

···
 	bool "Large payload keys"
 	depends on KEYS
 	depends on TMPFS
-	select CRYPTO
+	depends on (CRYPTO_ANSI_CPRNG = y || CRYPTO_DRBG = y)
 	select CRYPTO_AES
 	select CRYPTO_ECB
 	select CRYPTO_RNG

security/keys/big_key.c

···
  * 2 of the Licence, or (at your option) any later version.
  */
 
+#define pr_fmt(fmt) "big_key: "fmt
 #include <linux/init.h>
 #include <linux/seq_file.h>
 #include <linux/file.h>
···
  */
 static int __init big_key_init(void)
 {
-	return register_key_type(&key_type_big_key);
-}
+	struct crypto_skcipher *cipher;
+	struct crypto_rng *rng;
+	int ret;
 
-/*
- * Initialize big_key crypto and RNG algorithms
- */
-static int __init big_key_crypto_init(void)
-{
-	int ret = -EINVAL;
-
-	/* init RNG */
-	big_key_rng = crypto_alloc_rng(big_key_rng_name, 0, 0);
-	if (IS_ERR(big_key_rng)) {
-		big_key_rng = NULL;
-		return -EFAULT;
+	rng = crypto_alloc_rng(big_key_rng_name, 0, 0);
+	if (IS_ERR(rng)) {
+		pr_err("Can't alloc rng: %ld\n", PTR_ERR(rng));
+		return PTR_ERR(rng);
 	}
 
+	big_key_rng = rng;
+
 	/* seed RNG */
-	ret = crypto_rng_reset(big_key_rng, NULL, crypto_rng_seedsize(big_key_rng));
-	if (ret)
-		goto error;
+	ret = crypto_rng_reset(rng, NULL, crypto_rng_seedsize(rng));
+	if (ret) {
+		pr_err("Can't reset rng: %d\n", ret);
+		goto error_rng;
+	}
 
 	/* init block cipher */
-	big_key_skcipher = crypto_alloc_skcipher(big_key_alg_name,
-						 0, CRYPTO_ALG_ASYNC);
-	if (IS_ERR(big_key_skcipher)) {
-		big_key_skcipher = NULL;
-		ret = -EFAULT;
-		goto error;
+	cipher = crypto_alloc_skcipher(big_key_alg_name, 0, CRYPTO_ALG_ASYNC);
+	if (IS_ERR(cipher)) {
+		ret = PTR_ERR(cipher);
+		pr_err("Can't alloc crypto: %d\n", ret);
+		goto error_rng;
+	}
+
+	big_key_skcipher = cipher;
+
+	ret = register_key_type(&key_type_big_key);
+	if (ret < 0) {
+		pr_err("Can't register type: %d\n", ret);
+		goto error_cipher;
 	}
 
 	return 0;
 
-error:
+error_cipher:
+	crypto_free_skcipher(big_key_skcipher);
+error_rng:
 	crypto_free_rng(big_key_rng);
-	big_key_rng = NULL;
 	return ret;
 }
 
-device_initcall(big_key_init);
-late_initcall(big_key_crypto_init);
+late_initcall(big_key_init);

security/keys/proc.c

···
 	struct timespec now;
 	unsigned long timo;
 	key_ref_t key_ref, skey_ref;
-	char xbuf[12];
+	char xbuf[16];
 	int rc;
 
 	struct keyring_search_context ctx = {

sound/core/seq/seq_timer.c

···
 
 		ktime_get_ts64(&tm);
 		tm = timespec64_sub(tm, tmr->last_update);
-		cur_time.tv_nsec = tm.tv_nsec;
-		cur_time.tv_sec = tm.tv_sec;
+		cur_time.tv_nsec += tm.tv_nsec;
+		cur_time.tv_sec += tm.tv_sec;
 		snd_seq_sanity_real_time(&cur_time);
 	}
 	spin_unlock_irqrestore(&tmr->lock, flags);

sound/pci/asihpi/hpioctl.c

···
 		return -EINVAL;
 
 	hm = kmalloc(sizeof(*hm), GFP_KERNEL);
-	hr = kmalloc(sizeof(*hr), GFP_KERNEL);
+	hr = kzalloc(sizeof(*hr), GFP_KERNEL);
 	if (!hm || !hr) {
 		err = -ENOMEM;
 		goto out;

sound/pci/hda/hda_intel.c

···
 
 /* quirks for Nvidia */
 #define AZX_DCAPS_PRESET_NVIDIA \
-	(AZX_DCAPS_NO_MSI | /*AZX_DCAPS_ALIGN_BUFSIZE |*/ \
-	 AZX_DCAPS_NO_64BIT | AZX_DCAPS_CORBRP_SELF_CLEAR |\
+	(AZX_DCAPS_NO_MSI | AZX_DCAPS_CORBRP_SELF_CLEAR |\
 	 AZX_DCAPS_SNOOP_TYPE(NVIDIA))
 
 #define AZX_DCAPS_PRESET_CTHDA \
···
 			pci_dev_put(p_smbus);
 		}
 	}
+
+	/* NVidia hardware normally only supports up to 40 bits of DMA */
+	if (chip->pci->vendor == PCI_VENDOR_ID_NVIDIA)
+		dma_bits = 40;
 
 	/* disable 64bit DMA address on some devices */
 	if (chip->driver_caps & AZX_DCAPS_NO_64BIT) {

sound/pci/hda/patch_realtek.c

···
 #define ALC295_STANDARD_PINS \
 	{0x12, 0xb7a60130}, \
 	{0x14, 0x90170110}, \
-	{0x17, 0x21014020}, \
-	{0x18, 0x21a19030}, \
 	{0x21, 0x04211020}
 
 #define ALC298_STANDARD_PINS \
···
 		{0x1b, 0x02011020},
 		{0x21, 0x0221101f}),
 	SND_HDA_PIN_QUIRK(0x10ec0255, 0x1028, "Dell", ALC255_FIXUP_DELL1_MIC_NO_PRESENCE,
+		{0x14, 0x90170110},
+		{0x1b, 0x01011020},
+		{0x21, 0x0221101f}),
+	SND_HDA_PIN_QUIRK(0x10ec0255, 0x1028, "Dell", ALC255_FIXUP_DELL1_MIC_NO_PRESENCE,
 		{0x14, 0x90170130},
 		{0x1b, 0x01014020},
+		{0x21, 0x0221103f}),
+	SND_HDA_PIN_QUIRK(0x10ec0255, 0x1028, "Dell", ALC255_FIXUP_DELL1_MIC_NO_PRESENCE,
+		{0x14, 0x90170130},
+		{0x1b, 0x01011020},
 		{0x21, 0x0221103f}),
 	SND_HDA_PIN_QUIRK(0x10ec0255, 0x1028, "Dell", ALC255_FIXUP_DELL1_MIC_NO_PRESENCE,
 		{0x14, 0x90170130},
···
 		ALC292_STANDARD_PINS,
 		{0x13, 0x90a60140}),
 	SND_HDA_PIN_QUIRK(0x10ec0295, 0x1028, "Dell", ALC269_FIXUP_DELL1_MIC_NO_PRESENCE,
-		ALC295_STANDARD_PINS),
+		ALC295_STANDARD_PINS,
+		{0x17, 0x21014020},
+		{0x18, 0x21a19030}),
+	SND_HDA_PIN_QUIRK(0x10ec0295, 0x1028, "Dell", ALC269_FIXUP_DELL1_MIC_NO_PRESENCE,
+		ALC295_STANDARD_PINS,
+		{0x17, 0x21014040},
+		{0x18, 0x21a19050}),
 	SND_HDA_PIN_QUIRK(0x10ec0298, 0x1028, "Dell", ALC298_FIXUP_DELL1_MIC_NO_PRESENCE,
 		ALC298_STANDARD_PINS,
 		{0x17, 0x90170110}),
···
 	ALC891_FIXUP_HEADSET_MODE,
 	ALC891_FIXUP_DELL_MIC_NO_PRESENCE,
 	ALC662_FIXUP_ACER_VERITON,
+	ALC892_FIXUP_ASROCK_MOBO,
 };
 
 static const struct hda_fixup alc662_fixups[] = {
···
 			{ }
 		}
 	},
+	[ALC892_FIXUP_ASROCK_MOBO] = {
+		.type = HDA_FIXUP_PINS,
+		.v.pins = (const struct hda_pintbl[]) {
+			{ 0x15, 0x40f000f0 }, /* disabled */
+			{ 0x16, 0x40f000f0 }, /* disabled */
+			{ 0x18, 0x01014011 }, /* LO */
+			{ 0x1a, 0x01014012 }, /* LO */
+			{ }
+		}
+	},
 };
 
 static const struct snd_pci_quirk alc662_fixup_tbl[] = {
···
 	SND_PCI_QUIRK(0x144d, 0xc051, "Samsung R720", ALC662_FIXUP_IDEAPAD),
 	SND_PCI_QUIRK(0x17aa, 0x38af, "Lenovo Ideapad Y550P", ALC662_FIXUP_IDEAPAD),
 	SND_PCI_QUIRK(0x17aa, 0x3a0d, "Lenovo Ideapad Y550", ALC662_FIXUP_IDEAPAD),
+	SND_PCI_QUIRK(0x1849, 0x5892, "ASRock B150M", ALC892_FIXUP_ASROCK_MOBO),
 	SND_PCI_QUIRK(0x19da, 0xa130, "Zotac Z68", ALC662_FIXUP_ZOTAC_Z68),
 	SND_PCI_QUIRK(0x1b0a, 0x01b8, "ACER Veriton", ALC662_FIXUP_ACER_VERITON),
 	SND_PCI_QUIRK(0x1b35, 0x2206, "CZC P10T", ALC662_FIXUP_CZC_P10T),

sound/usb/quirks-table.h

···
 AU0828_DEVICE(0x2040, 0x7213, "Hauppauge", "HVR-950Q"),
 AU0828_DEVICE(0x2040, 0x7270, "Hauppauge", "HVR-950Q"),
 
+/* Syntek STK1160 */
+{
+	.match_flags = USB_DEVICE_ID_MATCH_DEVICE |
+		       USB_DEVICE_ID_MATCH_INT_CLASS |
+		       USB_DEVICE_ID_MATCH_INT_SUBCLASS,
+	.idVendor = 0x05e1,
+	.idProduct = 0x0408,
+	.bInterfaceClass = USB_CLASS_AUDIO,
+	.bInterfaceSubClass = USB_SUBCLASS_AUDIOCONTROL,
+	.driver_info = (unsigned long) &(const struct snd_usb_audio_quirk) {
+		.vendor_name = "Syntek",
+		.product_name = "STK1160",
+		.ifnum = QUIRK_ANY_INTERFACE,
+		.type = QUIRK_AUDIO_ALIGN_TRANSFER
+	}
+},
+
 /* Digidesign Mbox */
 {
 	/* Thanks to Clemens Ladisch <[e-mail]> */

tools/objtool/builtin-check.c

···
 		if (insn->type == INSN_JUMP_UNCONDITIONAL &&
 		    insn->jump_dest &&
 		    (insn->jump_dest->offset <= insn->offset ||
-		     insn->jump_dest->offset >= orig_insn->offset))
+		     insn->jump_dest->offset > orig_insn->offset))
 		    break;
 
 		text_rela = find_rela_by_dest_range(insn->sec, insn->offset,

virt/kvm/kvm_main.c

···
 static int get_user_page_nowait(unsigned long start, int write,
 		struct page **page)
 {
-	int flags = FOLL_TOUCH | FOLL_NOWAIT | FOLL_HWPOISON | FOLL_GET;
+	int flags = FOLL_NOWAIT | FOLL_HWPOISON;
 
 	if (write)
 		flags |= FOLL_WRITE;
 
-	return __get_user_pages(current, current->mm, start, 1, flags, page,
-			NULL, NULL);
+	return get_user_pages(start, 1, flags, page, NULL);
 }
 
 static inline int check_user_page_hwpoison(unsigned long addr)
 {
-	int rc, flags = FOLL_TOUCH | FOLL_HWPOISON | FOLL_WRITE;
+	int rc, flags = FOLL_HWPOISON | FOLL_WRITE;
 
-	rc = __get_user_pages(current, current->mm, addr, 1,
-			      flags, NULL, NULL, NULL);
+	rc = get_user_pages(addr, 1, flags, NULL, NULL);
 	return rc == -EHWPOISON;
 }