Merge tag 'mips_6.8' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux

Pull MIPS updates from Thomas Bogendoerfer:
"Just cleanups and fixes"

* tag 'mips_6.8' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux:
MIPS: Alchemy: Fix an out-of-bound access in db1550_dev_setup()
MIPS: Alchemy: Fix an out-of-bound access in db1200_dev_setup()
MIPS: Fix typos
MIPS: Remove unused shadow GPR support from vector irq setup
MIPS: Allow vectored interrupt handler to reside everywhere for 64bit
mips: Set dump-stack arch description
mips: mm: add slab availability checking in ioremap_prot
mips: Optimize max_mapnr init procedure
mips: Fix max_mapnr being uninitialized on early stages
mips: Fix incorrect max_low_pfn adjustment
mips: dmi: Fix early remap on MIPS32
MIPS: compressed: Use correct instruction for 64 bit code
MIPS: SGI-IP27: hubio: fix nasid kernel-doc warning
MAINTAINERS: Add myself as maintainer of the Ralink architecture

MAINTAINERS

···
 
 RALINK MIPS ARCHITECTURE
 M:	John Crispin <[e-mail]>
+M:	Sergio Paracuellos <[e-mail]>
 L:	[e-mail]
 S:	Maintained
 F:	arch/mips/ralink

arch/mips/alchemy/devboards/db1200.c

···
 	i2c_register_board_info(0, db1200_i2c_devs,
 				ARRAY_SIZE(db1200_i2c_devs));
 	spi_register_board_info(db1200_spi_devs,
-				ARRAY_SIZE(db1200_i2c_devs));
+				ARRAY_SIZE(db1200_spi_devs));
 
 	/* SWITCHES:	S6.8 I2C/SPI selector  (OFF=I2C	 ON=SPI)
 	 *		S6.7 AC97/I2S selector (OFF=AC97 ON=I2S)

arch/mips/alchemy/devboards/db1550.c

···
 	i2c_register_board_info(0, db1550_i2c_devs,
 				ARRAY_SIZE(db1550_i2c_devs));
 	spi_register_board_info(db1550_spi_devs,
-				ARRAY_SIZE(db1550_i2c_devs));
+				ARRAY_SIZE(db1550_spi_devs));
 
 	c = clk_get(NULL, "psc0_intclk");
 	if (!IS_ERR(c)) {

arch/mips/bcm47xx/buttons.c

···
 bcm47xx_buttons_buffalo_whr_g125[] __initconst = {
 	BCM47XX_GPIO_KEY(0, KEY_WPS_BUTTON),
 	BCM47XX_GPIO_KEY(4, KEY_RESTART),
-	BCM47XX_GPIO_KEY(5, BTN_0), /* Router / AP mode swtich */
+	BCM47XX_GPIO_KEY(5, BTN_0), /* Router / AP mode switch */
 };
 
 static const struct gpio_keys_button
 bcm47xx_buttons_buffalo_whr_g54s[] __initconst = {
 	BCM47XX_GPIO_KEY(0, KEY_WPS_BUTTON),
 	BCM47XX_GPIO_KEY_H(4, KEY_RESTART),
-	BCM47XX_GPIO_KEY(5, BTN_0), /* Router / AP mode swtich */
+	BCM47XX_GPIO_KEY(5, BTN_0), /* Router / AP mode switch */
 };
 
 static const struct gpio_keys_button
 bcm47xx_buttons_buffalo_whr_hp_g54[] __initconst = {
 	BCM47XX_GPIO_KEY(0, KEY_WPS_BUTTON),
 	BCM47XX_GPIO_KEY(4, KEY_RESTART),
-	BCM47XX_GPIO_KEY(5, BTN_0), /* Router / AP mode swtich */
+	BCM47XX_GPIO_KEY(5, BTN_0), /* Router / AP mode switch */
 };
 
 static const struct gpio_keys_button

arch/mips/bcm63xx/clk.c

···
 	}
 
 	if (enable) {
-		/* reset switch core afer clock change */
+		/* reset switch core after clock change */
 		bcm63xx_core_set_reset(BCM63XX_RESET_ENETSW, 1);
 		msleep(10);
 		bcm63xx_core_set_reset(BCM63XX_RESET_ENETSW, 0);
···
 	bcm_hwclock_set(CKCTL_6368_SAR_EN, enable);
 
 	if (enable) {
-		/* reset sar core afer clock change */
+		/* reset sar core after clock change */
 		bcm63xx_core_set_reset(BCM63XX_RESET_SAR, 1);
 		mdelay(1);
 		bcm63xx_core_set_reset(BCM63XX_RESET_SAR, 0);

arch/mips/boot/compressed/dbg.c

···
  * MIPS-specific debug support for pre-boot environment
  *
  * NOTE: putc() is board specific, if your board have a 16550 compatible uart,
- * please select SYS_SUPPORTS_ZBOOT_UART16550 for your machine. othewise, you
+ * please select SYS_SUPPORTS_ZBOOT_UART16550 for your machine. otherwise, you
  * need to implement your own putc().
  */
 #include <linux/compiler.h>

arch/mips/boot/compressed/head.S

···
 	/* Clear BSS */
 	PTR_LA	a0, _edata
 	PTR_LA	a2, _end
-1:	sw	zero, 0(a0)
-	addiu	a0, a0, 4
+1:	PTR_S	zero, 0(a0)
+	PTR_ADDIU a0, a0, PTRSIZE
 	bne	a2, a0, 1b
 
 	PTR_LA	a0, (.heap)	     /* heap address */

arch/mips/boot/elf2ecoff.c

···
 	efh.f_symptr = 0;
 	efh.f_nsyms = 0;
 	efh.f_opthdr = sizeof eah;
-	efh.f_flags = 0x100f;	/* Stripped, not sharable. */
+	efh.f_flags = 0x100f;	/* Stripped, not shareable. */
 
 	memset(esecs, 0, sizeof esecs);
 	strcpy(esecs[0].s_name, ".text");

arch/mips/cavium-octeon/csrc-octeon.c

···
 
 unsigned long long notrace sched_clock(void)
 {
-	/* 64-bit arithmatic can overflow, so use 128-bit.  */
+	/* 64-bit arithmetic can overflow, so use 128-bit.  */
 	u64 t1, t2, t3;
 	unsigned long long rv;
 	u64 mult = clocksource_mips.mult;

arch/mips/cavium-octeon/executive/cvmx-boot-vector.c

···
 		uint64_t v = _cvmx_bootvector_data[i];
 
 		if (OCTEON_IS_OCTEON1PLUS() && (i == 0 || i == 7))
-			v &= 0xffffffff00000000ull; /* KScratch not availble. */
+			v &= 0xffffffff00000000ull; /* KScratch not available */
 		cvmx_write_csr(CVMX_MIO_BOOT_LOC_ADR, i * 8);
 		cvmx_write_csr(CVMX_MIO_BOOT_LOC_DAT, v);
 	}

arch/mips/cavium-octeon/executive/cvmx-bootmem.c

···
 	 * Convert !0 address_min and 0 address_max to special case of
 	 * range that specifies an exact memory block to allocate.  Do
 	 * this before other checks and adjustments so that this
-	 * tranformation will be validated.
+	 * transformation will be validated.
 	 */
 	if (address_min && !address_max)
 		address_max = address_min + req_size;

arch/mips/cavium-octeon/executive/cvmx-cmd-queue.c

···
 }
 
 /*
- * Shutdown a queue a free it's command buffers to the FPA. The
+ * Shutdown a queue and free its command buffers to the FPA. The
  * hardware connected to the queue must be stopped before this
  * function is called.
  *
···
 
 /*
  * Return the command buffer to be written to. The purpose of this
- * function is to allow CVMX routine access t othe low level buffer
+ * function is to allow CVMX routine access to the low level buffer
  * for initial hardware setup. User applications should not call this
  * function directly.
  *

arch/mips/cavium-octeon/executive/cvmx-helper-jtag.c

···
 /**
  * Shift long sequences of zeros into the QLM JTAG chain. It is
  * common to need to shift more than 32 bits of zeros into the
- * chain. This function is a convience wrapper around
+ * chain. This function is a convenience wrapper around
  * cvmx_helper_qlm_jtag_shift() to shift more than 32 bits of
  * zeros at a time.
  *

arch/mips/cavium-octeon/executive/cvmx-pko.c

···
 	/*
 	 * Each packet has a 12 bytes of interframe gap, an 8 byte
 	 * preamble, and a 4 byte CRC. These are not included in the
-	 * per word count. Multiply by 8 to covert to bits and divide
+	 * per word count. Multiply by 8 to convert to bits and divide
 	 * by 256 for limit granularity.
 	 */
 	pko_mem_port_rate0.s.rate_pkt = (12 + 8 + 4) * 8 * tokens_per_bit / 256;

arch/mips/cavium-octeon/octeon-platform.c

···
 			 * zero.
 			 */
 
-			/* Asume that CS1 immediately follows. */
+			/* Assume that CS1 immediately follows. */
 			mio_boot_reg_cfg.u64 =
 				cvmx_read_csr(CVMX_MIO_BOOT_REG_CFGX(cs + 1));
 			region1_base = mio_boot_reg_cfg.s.base << 16;

arch/mips/fw/arc/promlib.c

···
 /*
  * For 64bit kernels working with a 32bit ARC PROM pointer arguments
  * for ARC calls need to reside in CKEG0/1. But as soon as the kernel
- * switches to it's first kernel thread stack is set to an address in
+ * switches to its first kernel thread stack is set to an address in
  * XKPHYS, so anything on stack can't be used anymore. This is solved
- * by using a * static declartion variables are put into BSS, which is
+ * by using a * static declaration variables are put into BSS, which is
  * linked to a CKSEG0 address. Since this is only used on UP platforms
- * there is not spinlock needed
+ * there is no spinlock needed
  */
 #define O32_STATIC	static
 #else

arch/mips/include/asm/debug.h

···
 
 /*
  * mips_debugfs_dir corresponds to the "mips" directory at the top level
- * of the DebugFS hierarchy. MIPS-specific DebugFS entires should be
+ * of the DebugFS hierarchy. MIPS-specific DebugFS entries should be
  * placed beneath this directory.
  */
 extern struct dentry *mips_debugfs_dir;

arch/mips/include/asm/dmi.h

···
 #include <linux/io.h>
 #include <linux/memblock.h>
 
-#define dmi_early_remap(x, l)		ioremap_cache(x, l)
+#define dmi_early_remap(x, l)		ioremap(x, l)
 #define dmi_early_unmap(x, l)		iounmap(x)
 #define dmi_remap(x, l)			ioremap_cache(x, l)
 #define dmi_unmap(x)			iounmap(x)

arch/mips/include/asm/io.h

···
  * address is not guaranteed to be usable directly as a virtual
  * address.
  *
- * This version of ioremap ensures that the memory is marked cachable by
+ * This version of ioremap ensures that the memory is marked cacheable by
  * the CPU.  Also enables full write-combining.	 Useful for some
  * memory-like regions on I/O busses.
  */
···
  * address is not guaranteed to be usable directly as a virtual
  * address.
  *
- * This version of ioremap ensures that the memory is marked uncachable
+ * This version of ioremap ensures that the memory is marked uncacheable
  * but accelerated by means of write-combining feature. It is specifically
  * useful for PCIe prefetchable windows, which may vastly improve a
  * communications performance. If it was determined on boot stage, what

arch/mips/include/asm/mach-au1x00/au1000_dma.h

···
 	if (!chan)
 		return;
 	/*
-	 * set_dma_mode is only allowed to change endianess, direction,
+	 * set_dma_mode is only allowed to change endianness, direction,
 	 * transfer size, device FIFO width, and coherency settings.
 	 * Make sure anything else is masked off.
 	 */

arch/mips/include/asm/mach-au1x00/gpio-au1000.h

···
 /**
  * alchemy_gpio2_enable -  Activate GPIO2 block.
  *
- * The GPIO2 block must be enabled excplicitly to work.	 On systems
+ * The GPIO2 block must be enabled explicitly to work.	 On systems
  * where this isn't done by the bootloader, this macro can be used.
  */
 static inline void alchemy_gpio2_enable(void)

arch/mips/include/asm/mach-lantiq/falcon/lantiq_soc.h

···
 #define ltq_sys1_w32_mask(clear, set, reg)   \
 	ltq_sys1_w32((ltq_sys1_r32(reg) & ~(clear)) | (set), reg)
 
-/* allow the gpio and pinctrl drivers to talk to eachother */
+/* allow the gpio and pinctrl drivers to talk to each other */
 extern int pinctrl_falcon_get_range_size(int id);
 extern void pinctrl_falcon_add_gpio_range(struct pinctrl_gpio_range *range);
 

arch/mips/include/asm/mach-loongson64/loongson_hwmon.h

···
 	/* period between two check. (Unit: S) */
 	u8	adjust_period;
 
-	/* fan adjust usually depend on a temprature input */
+	/* fan adjust usually depend on a temperature input */
 	get_temp_fun	depend_temp;
 
 	/* up_step/down_step used when type is STEP_SPEED_POLICY */

arch/mips/include/asm/mach-loongson64/loongson_regs.h

···
 #define LOONGSON_CSR_NODECNT	0x408
 #define LOONGSON_CSR_CPUTEMP	0x428
 
-/* PerCore CSR, only accessable by local cores */
+/* PerCore CSR, only accessible by local cores */
 #define LOONGSON_CSR_IPI_STATUS	0x1000
 #define LOONGSON_CSR_IPI_EN	0x1004
 #define LOONGSON_CSR_IPI_SET	0x1008

arch/mips/include/asm/mach-malta/spaces.h

···
  * The kernel is still located in 0x80000000(kseg0). However,
  * the physical mask has been shifted to 0x80000000 which exploits the alias
  * on the Malta board. As a result of which, we override the __pa_symbol
- * to peform direct mapping from virtual to physical addresses. In other
+ * to perform direct mapping from virtual to physical addresses. In other
  * words, the 0x80000000 virtual address maps to 0x80000000 physical address
  * which in turn aliases to 0x0. We do this in order to be able to use a flat
  * 2GB of memory (0x80000000 - 0xffffffff) so we can avoid the I/O hole in
  * 0x10000000 - 0x1fffffff.
  * The last 64KB of physical memory are reserved for correct HIGHMEM
- * macros arithmetics.
+ * macros arithmetic.
  *
  */
 

arch/mips/include/asm/mips-boards/bonito64.h

···
  */
 
 /* Revision 1.48 autogenerated on 08/17/99 15:20:01 */
-/* This bonito64 version editted from bonito.h Revision 1.48 on 11/09/00 */
+/* This bonito64 version edited from bonito.h Revision 1.48 on 11/09/00 */
 
 #ifndef _ASM_MIPS_BOARDS_BONITO64_H
 #define _ASM_MIPS_BOARDS_BONITO64_H

arch/mips/include/asm/mips-cpc.h

···
  *                              the CPC
  *
  * Returns the default physical base address of the Cluster Power Controller
- * memory mapped registers. This is platform dependant & must therefore be
+ * memory mapped registers. This is platform dependent & must therefore be
  * implemented per-platform.
  */
 extern phys_addr_t mips_cpc_default_phys_base(void);

arch/mips/include/asm/mipsregs.h

···
 
 /*
  * R4640/R4650 cp0 register names.  These registers are listed
- * here only for completeness; without MMU these CPUs are not useable
+ * here only for completeness; without MMU these CPUs are not usable
  * by Linux.  A future ELKS port might take make Linux run on them
  * though ...
  */
···
 #define EXCCODE_THREAD		25	/* Thread exceptions (MT) */
 #define EXCCODE_DSPDIS		26	/* DSP disabled exception */
 #define EXCCODE_GE		27	/* Virtualized guest exception (VZ) */
-#define EXCCODE_CACHEERR	30	/* Parity/ECC occured on a core */
+#define EXCCODE_CACHEERR	30	/* Parity/ECC occurred on a core */
 
 /* Implementation specific trap codes used by MIPS cores */
 #define MIPS_EXCCODE_TLBPAR	16	/* TLB parity error exception */

arch/mips/include/asm/octeon/cvmx-bootinfo.h

···
 
 	/*
 	 * flags indicating various configuration options.  These
-	 * flags supercede the 'flags' variable and should be used
+	 * flags supersede the 'flags' variable and should be used
 	 * instead if available.
 	 */
 	uint32_t config_flags;

arch/mips/include/asm/octeon/cvmx-cmd-queue.h

···
 /**
  * This structure contains the global state of all command queues.
  * It is stored in a bootmem named block and shared by all
- * applications running on Octeon. Tickets are stored in a differnet
+ * applications running on Octeon. Tickets are stored in a different
  * cache line that queue information to reduce the contention on the
  * ll/sc used to get a ticket. If this is not the case, the update
  * of queue state causes the ll/sc to fail quite often.
···
 						  int pool_size);
 
 /**
- * Shutdown a queue a free it's command buffers to the FPA. The
+ * Shutdown a queue and free its command buffers to the FPA. The
  * hardware connected to the queue must be stopped before this
  * function is called.
  *
···
 
 /**
  * Return the command buffer to be written to. The purpose of this
- * function is to allow CVMX routine access t othe low level buffer
+ * function is to allow CVMX routine access to the low level buffer
  * for initial hardware setup. User applications should not call this
  * function directly.
  *

arch/mips/include/asm/octeon/cvmx-pko.h

···
 } cvmx_pko_status_t;
 
 /**
- * This enumeration represents the differnet locking modes supported by PKO.
+ * This enumeration represents the different locking modes supported by PKO.
  */
 typedef enum {
 	/*

arch/mips/include/asm/octeon/cvmx-pow.h

···
  * This function does NOT wait for previous tag switches to complete,
  * so the caller must ensure that there is not a pending tag switch.
  *
- * @wait:   When set, call stalls until work becomes avaiable, or times out.
+ * @wait:   When set, call stalls until work becomes available, or times out.
  *		 If not set, returns immediately.
  *
  * Returns: the WQE pointer from POW. Returns NULL if no work
···
  * This function waits for any previous tag switch to complete before
  * requesting the new work.
  *
- * @wait:   When set, call stalls until work becomes avaiable, or times out.
+ * @wait:   When set, call stalls until work becomes available, or times out.
  *		 If not set, returns immediately.
  *
  * Returns: the WQE pointer from POW. Returns NULL if no work

arch/mips/include/asm/octeon/octeon-model.h

···
 #define OM_CHECK_SUBMODEL	  0x02000000
 /* Match all models previous than the one specified */
 #define OM_MATCH_PREVIOUS_MODELS  0x04000000
-/* Ignores the minor revison on newer parts */
+/* Ignores the minor revision on newer parts */
 #define OM_IGNORE_MINOR_REVISION  0x08000000
 #define OM_FLAG_MASK		  0xff000000
 
···
 #define OCTEON_CN52XX_PASS2	OCTEON_CN52XX_PASS2_X
 
 /*
- * CN3XXX models with old revision enconding
+ * CN3XXX models with old revision encoding
  */
 #define OCTEON_CN38XX_PASS1	0x000d0000
 #define OCTEON_CN38XX_PASS2	0x000d0001

arch/mips/include/asm/page.h

···
 	if (IS_ENABLED(CONFIG_64BIT)) {
 		/*
 		 * For MIPS64 the virtual address may either be in one of
-		 * the compatibility segements ckseg0 or ckseg1, or it may
+		 * the compatibility segments ckseg0 or ckseg1, or it may
 		 * be in xkphys.
 		 */
 		return x < CKSEG0 ? XPHYSADDR(x) : CPHYSADDR(x);

arch/mips/include/asm/pci.h

···
 #ifdef CONFIG_PCI_DRIVERS_LEGACY
 
 /*
- * Each pci channel is a top-level PCI bus seem by CPU.	 A machine  with
+ * Each PCI channel is a top-level PCI bus seem by CPU.	 A machine with
  * multiple PCI channels may have multiple PCI host controllers or a
  * single controller supporting multiple channels.
  */

arch/mips/include/asm/pgtable-bits.h

···
  * The final layouts of the PTE bits are:
  *
  *   64-bit, R1 or earlier:     CCC D V G [S H] M A W R P
- *   32-bit, R1 or earler:      CCC D V G M A W R P
+ *   32-bit, R1 or earlier:     CCC D V G M A W R P
  *   64-bit, R2 or later:       CCC D V G RI/R XI [S H] M A W P
  *   32-bit, R2 or later:       CCC D V G RI/R XI M A W P
  */

arch/mips/include/asm/sgi/mc.h

···
 	volatile u32 lbursttp;	/* Time period for long bursts */
 
 	/* MC chip can drive up to 4 bank 4 SIMMs each. All SIMMs in bank must
-	 * be the same size. The size encoding for supported SIMMs is bellow */
+	 * be the same size. The size encoding for supported SIMMs is below */
 	u32 _unused11[9];
 	volatile u32 mconfig0;	/* Memory config register zero */
 	u32 _unused12;

arch/mips/include/asm/sn/klconfig.h

···
 /*
  * TBD - Allocation issues.
  *
- * Do we need to Mark off sepatate heaps for lboard_t, rboard_t, component,
+ * Do we need to Mark off separate heaps for lboard_t, rboard_t, component,
  * errinfo and allocate from them, or have a single heap and allocate all
  * structures from it. Debug is easier in the former method since we can
  * dump all similar structs in one command, but there will be lots of holes,

arch/mips/include/asm/sync.h

···
  *
  * Ordering barriers can be more efficient than completion barriers, since:
  *
- *   a) Ordering barriers only require memory access instructions which preceed
+ *   a) Ordering barriers only require memory access instructions which precede
  *      them in program order (older instructions) to reach a point in the
  *      load/store datapath beyond which reordering is not possible before
  *      allowing memory access instructions which follow them (younger

arch/mips/include/asm/thread_info.h

···
 	unsigned long		flags;		/* low level flags */
 	unsigned long		tp_value;	/* thread pointer */
 	__u32			cpu;		/* current CPU */
-	int			preempt_count;	/* 0 => preemptable, <0 => BUG */
+	int			preempt_count;	/* 0 => preemptible, <0 => BUG */
 	struct pt_regs		*regs;
 	long			syscall;	/* syscall number */
 };

arch/mips/include/asm/timex.h

···
  *
  * There is a suggested workaround and also the erratum can't strike if
  * the compare interrupt isn't being used as the clock source device.
- * However for now the implementaton of this function doesn't get these
+ * However for now the implementation of this function doesn't get these
  * fine details right.
  */
 static inline int can_use_mips_counter(unsigned int prid)

arch/mips/include/asm/vdso/vdso.h

···
 #else
 	/*
 	 * Get the base load address of the VDSO. We have to avoid generating
-	 * relocations and references to the GOT because ld.so does not peform
+	 * relocations and references to the GOT because ld.so does not perform
 	 * relocations on the VDSO. We use the current offset from the VDSO base
 	 * and perform a PC-relative branch which gives the absolute address in
 	 * ra, and take the difference. The assembler chokes on

arch/mips/include/uapi/asm/mman.h

···
 #define MADV_HUGEPAGE	14		/* Worth backing with hugepages */
 #define MADV_NOHUGEPAGE 15		/* Not worth backing with hugepages */
 
-#define MADV_DONTDUMP	16		/* Explicity exclude from the core dump,
+#define MADV_DONTDUMP	16		/* Explicitly exclude from core dump,
 					   overrides the coredump filter bits */
 #define MADV_DODUMP	17		/* Clear the MADV_NODUMP flag */
 

arch/mips/include/uapi/asm/msgbuf.h

···
 	unsigned long  __unused5;
 };
 #else
-#warning no endianess set
+#warning no endianness set
 #endif
 
 #endif /* _ASM_MSGBUF_H */

arch/mips/kernel/cpu-probe.c

···
 		 * This processor doesn't have an MMU, so it's not
 		 * "real easy" to run Linux on it. It is left purely
 		 * for documentation.  Commented out because it shares
-		 * it's c0_prid id number with the TX3900.
+		 * its c0_prid id number with the TX3900.
 		 */
 		c->cputype = CPU_R4650;
 		__cpu_name[cpu] = "R4650";

arch/mips/kernel/genex.S

···
 	.set	push
 	.set	noreorder
 	PTR_LA	v1, except_vec_vi_handler
-FEXPORT(except_vec_vi_lui)
-	lui	v0, 0		/* Patched */
 	jr	v1
 FEXPORT(except_vec_vi_ori)
-	 ori	v0, 0		/* Patched */
+	 ori	v0, zero, 0		/* Offset in vi_handlers[] */
 	.set	pop
 	END(except_vec_vi)
 EXPORT(except_vec_vi_end)
 
 /*
  * Common Vectored Interrupt code
- * Complete the register saves and invoke the handler which is passed in $v0
+ * Complete the register saves and invoke the handler, $v0 holds
+ * offset into vi_handlers[]
  */
 NESTED(except_vec_vi_handler, 0, sp)
 	SAVE_TEMP
···
 	/* Save task's sp on IRQ stack so that unwinding can follow it */
 	LONG_S	s1, 0(sp)
 2:
+	PTR_L	v0, vi_handlers(v0)
 	jalr	v0
 
 	/* Restore sp */

arch/mips/kernel/kprobes.c

···
  * one; putting breakpoint on top of atomic ll/sc pair is bad idea;
  * so we need to prevent it and refuse kprobes insertion for such
  * instructions; cannot do much about breakpoint in the middle of
- * ll/sc pair; it is upto user to avoid those places
+ * ll/sc pair; it is up to user to avoid those places
  */
 static int insn_has_ll_or_sc(union mips_instruction insn)
 {

arch/mips/kernel/prom.c

···
 
 	strscpy(mips_machine_name, name, sizeof(mips_machine_name));
 	pr_info("MIPS: machine is %s\n", mips_get_machine_name());
+
+	dump_stack_set_arch_desc(name);
 }
 
 char *mips_get_machine_name(void)

arch/mips/kernel/relocate.c

···
 		}
 #endif /* CONFIG_USE_OF */
 
-		/* Copy the kernel to it's new location */
+		/* Copy the kernel to its new location */
 		memcpy(loc_new, &_text, kernel_length);
 
 		/* Perform relocations on the new kernel */

arch/mips/kernel/relocate_kernel.S

···
 done:
 #ifdef CONFIG_SMP
 	/* kexec_flag reset is signal to other CPUs what kernel
-	   was moved to it's location. Note - we need relocated address
+	   was moved to its location. Note - we need relocated address
 	   of kexec_flag.  */
 
 	bal		1f

arch/mips/kernel/setup.c

···
 	/*
 	 * Board specific code or command line parser should have
 	 * already set up initrd_start and initrd_end. In these cases
-	 * perfom sanity checks and use them if all looks good.
+	 * perform sanity checks and use them if all looks good.
 	 */
 	if (!initrd_start || initrd_end <= initrd_start)
 		goto disable;
···
 		panic("Incorrect memory mapping !!!");
 
 	if (max_pfn > PFN_DOWN(HIGHMEM_START)) {
+		max_low_pfn = PFN_DOWN(HIGHMEM_START);
 #ifdef CONFIG_HIGHMEM
-		highstart_pfn = PFN_DOWN(HIGHMEM_START);
+		highstart_pfn = max_low_pfn;
 		highend_pfn = max_pfn;
 #else
-		max_low_pfn = PFN_DOWN(HIGHMEM_START);
 		max_pfn = max_low_pfn;
 #endif
 	}

arch/mips/kernel/signal.c

···
 		return (void __user __force *)(-1UL);
 
 	/*
-	 * FPU emulator may have it's own trampoline active just
+	 * FPU emulator may have its own trampoline active just
 	 * above the user stack, 16-bytes before the next lowest
 	 * 16 byte boundary.  Try to avoid trashing it.
 	 */

arch/mips/kernel/traps.c

···
 	panic("Caught unexpected vectored interrupt.");
 }
 
-static void *set_vi_srs_handler(int n, vi_handler_t addr, int srs)
+void *set_vi_handler(int n, vi_handler_t addr)
 {
+	extern const u8 except_vec_vi[];
+	extern const u8 except_vec_vi_ori[], except_vec_vi_end[];
+	extern const u8 rollback_except_vec_vi[];
 	unsigned long handler;
 	unsigned long old_handler = vi_handlers[n];
 	int srssets = current_cpu_data.srsets;
 	u16 *h;
 	unsigned char *b;
+	const u8 *vec_start;
+	int ori_offset;
+	int handler_len;
 
 	BUG_ON(!cpu_has_veic && !cpu_has_vint);
 
 	if (addr == NULL) {
 		handler = (unsigned long) do_default_vi;
-		srs = 0;
 	} else
 		handler = (unsigned long) addr;
 	vi_handlers[n] = handler;
 
 	b = (unsigned char *)(ebase + 0x200 + n*VECTORSPACING);
 
-	if (srs >= srssets)
-		panic("Shadow register set %d not supported", srs);
-
 	if (cpu_has_veic) {
 		if (board_bind_eic_interrupt)
-			board_bind_eic_interrupt(n, srs);
+			board_bind_eic_interrupt(n, 0);
 	} else if (cpu_has_vint) {
 		/* SRSMap is only defined if shadow sets are implemented */
 		if (srssets > 1)
-			change_c0_srsmap(0xf << n*4, srs << n*4);
+			change_c0_srsmap(0xf << n*4, 0 << n*4);
 	}
 
-	if (srs == 0) {
-		/*
-		 * If no shadow set is selected then use the default handler
-		 * that does normal register saving and standard interrupt exit
-		 */
-		extern const u8 except_vec_vi[], except_vec_vi_lui[];
-		extern const u8 except_vec_vi_ori[], except_vec_vi_end[];
-		extern const u8 rollback_except_vec_vi[];
-		const u8 *vec_start = using_rollback_handler() ?
-				      rollback_except_vec_vi : except_vec_vi;
+	vec_start = using_rollback_handler() ? rollback_except_vec_vi :
+					       except_vec_vi;
 #if defined(CONFIG_CPU_MICROMIPS) || defined(CONFIG_CPU_BIG_ENDIAN)
-		const int lui_offset = except_vec_vi_lui - vec_start + 2;
-		const int ori_offset = except_vec_vi_ori - vec_start + 2;
+	ori_offset = except_vec_vi_ori - vec_start + 2;
 #else
-		const int lui_offset = except_vec_vi_lui - vec_start;
-		const int ori_offset = except_vec_vi_ori - vec_start;
+	ori_offset = except_vec_vi_ori - vec_start;
 #endif
-		const int handler_len = except_vec_vi_end - vec_start;
+	handler_len = except_vec_vi_end - vec_start;
 
-		if (handler_len > VECTORSPACING) {
-			/*
-			 * Sigh... panicing won't help as the console
-			 * is probably not configured :(
-			 */
-			panic("VECTORSPACING too small");
-		}
-
-		set_handler(((unsigned long)b - ebase), vec_start,
-#ifdef CONFIG_CPU_MICROMIPS
-				(handler_len - 1));
-#else
-				handler_len);
-#endif
-		h = (u16 *)(b + lui_offset);
-		*h = (handler >> 16) & 0xffff;
-		h = (u16 *)(b + ori_offset);
-		*h = (handler & 0xffff);
-		local_flush_icache_range((unsigned long)b,
-					 (unsigned long)(b+handler_len));
-	}
-	else {
+	if (handler_len > VECTORSPACING) {
 		/*
-		 * In other cases jump directly to the interrupt handler. It
-		 * is the handler's responsibility to save registers if required
-		 * (eg hi/lo) and return from the exception using "eret".
+		 * Sigh... panicing won't help as the console
+		 * is probably not configured :(
 		 */
-		u32 insn;
-
-		h = (u16 *)b;
-		/* j handler */
-#ifdef CONFIG_CPU_MICROMIPS
-		insn = 0xd4000000 | (((u32)handler & 0x07ffffff) >> 1);
-#else
-		insn = 0x08000000 | (((u32)handler & 0x0fffffff) >> 2);
-#endif
-		h[0] = (insn >> 16) & 0xffff;
-		h[1] = insn & 0xffff;
-		h[2] = 0;
-		h[3] = 0;
-		local_flush_icache_range((unsigned long)b,
-					 (unsigned long)(b+8));
+		panic("VECTORSPACING too small");
 	}
+
+	set_handler(((unsigned long)b - ebase), vec_start,
+#ifdef CONFIG_CPU_MICROMIPS
+			(handler_len - 1));
+#else
+			handler_len);
+#endif
+	/* insert offset into vi_handlers[] */
+	h = (u16 *)(b + ori_offset);
+	*h = n * sizeof(handler);
+	local_flush_icache_range((unsigned long)b,
+				 (unsigned long)(b+handler_len));
 
 	return (void *)old_handler;
-}
-
-void *set_vi_handler(int n, vi_handler_t addr)
-{
-	return set_vi_srs_handler(n, addr, 0);
 }
 
 /*
···
 		set_except_vector(i, handle_reserved);
 
 	/*
-	 * Copy the EJTAG debug exception vector handler code to it's final
+	 * Copy the EJTAG debug exception vector handler code to its final
 	 * destination.
 	 */
 	if (cpu_has_ejtag && board_ejtag_handler_setup)

arch/mips/kernel/vpe.c

···
  * Copyright (C) 2004, 2005 MIPS Technologies, Inc.  All rights reserved.
  * Copyright (C) 2013 Imagination Technologies Ltd.
  *
- * VPE spport module for loading a MIPS SP program into VPE1. The SP
+ * VPE support module for loading a MIPS SP program into VPE1. The SP
  * environment is rather simple since there are no TLBs. It needs
- * to be relocatable (or partiall linked). Initialize your stack in
+ * to be relocatable (or partially linked). Initialize your stack in
  * the startup-code. The loader looks for the symbol __start and sets
  * up the execution to resume from there. To load and run, simply do
  * a cat SP 'binary' to the /dev/vpe1 device.

arch/mips/kvm/emulate.c

···
  * to be used for a period of time, but the exact ktime corresponding to the
  * final Count that must be restored is not known.
  *
- * It is gauranteed that a timer interrupt immediately after restore will be
+ * It is guaranteed that a timer interrupt immediately after restore will be
  * handled, but not if CP0_Compare is exactly at @count. That case should
  * already be handled when the hardware timer state is saved.
  *

arch/mips/loongson2ef/common/platform.c

···
 {
 	struct cpuinfo_mips *c = &current_cpu_data;
 
-	/* Only 2F revision and it's successors support CPUFreq */
+	/* Only 2F revision and its successors support CPUFreq */
 	if ((c->processor_id & PRID_REV_MASK) >= PRID_REV_LOONGSON2F)
 		return platform_device_register(&loongson2_cpufreq_device);
 

arch/mips/loongson64/smp.c

···
 }
 
 /*
- * Setup the PC, SP, and GP of a secondary processor and start it runing!
+ * Setup the PC, SP, and GP of a secondary processor and start it running!
  */
 static int loongson3_boot_secondary(int cpu, struct task_struct *idle)
 {

arch/mips/mm/c-r4k.c

···
 
 	/*
 	 * c0_status.cu=0 specifies that updates by the sc instruction use
-	 * the coherency mode specified by the TLB; 1 means cachable
+	 * the coherency mode specified by the TLB; 1 means cacheable
 	 * coherent update on write will be used.  Not all processors have
 	 * this bit and; some wire it to zero, others like Toshiba had the
 	 * silly idea of putting something else there ...

arch/mips/mm/cex-gen.S

···
 	 * This is a very bad place to be.  Our cache error
 	 * detection has triggered.  If we have write-back data
 	 * in the cache, we may not be able to recover.	 As a
-	 * first-order desperate measure, turn off KSEG0 cacheing.
+	 * first-order desperate measure, turn off KSEG0 caching.
 	 */
 	mfc0	k0,CP0_CONFIG
 	li	k1,~CONF_CM_CMASK

arch/mips/mm/init.c

···
 		       " %ldk highmem ignored\n",
 		       (highend_pfn - max_low_pfn) << (PAGE_SHIFT - 10));
 		max_zone_pfns[ZONE_HIGHMEM] = max_low_pfn;
+
+		max_mapnr = max_low_pfn;
+	} else if (highend_pfn) {
+		max_mapnr = highend_pfn;
+	} else {
+		max_mapnr = max_low_pfn;
 	}
+#else
+	max_mapnr = max_low_pfn;
 #endif
+	high_memory = (void *) __va(max_low_pfn << PAGE_SHIFT);
 
 	free_area_init(max_zone_pfns);
 }
···
 	 * bits to hold a full 32b physical address on MIPS32 systems.
 	 */
 	BUILD_BUG_ON(IS_ENABLED(CONFIG_32BIT) && (PFN_PTE_SHIFT > PAGE_SHIFT));
-
-#ifdef CONFIG_HIGHMEM
-	max_mapnr = highend_pfn ? highend_pfn : max_low_pfn;
-#else
-	max_mapnr = max_low_pfn;
-#endif
-	high_memory = (void *) __va(max_low_pfn << PAGE_SHIFT);
 
 	maar_init();
 	memblock_free_all();

arch/mips/mm/ioremap.c

···
 	    flags == _CACHE_UNCACHED)
 		return (void __iomem *) CKSEG1ADDR(phys_addr);
 
+	/* Early remaps should use the unmapped regions til' VM is available */
+	if (WARN_ON_ONCE(!slab_is_available()))
+		return NULL;
+
 	/*
 	 * Don't allow anybody to remap RAM that may be allocated by the page
 	 * allocator, since that could lead to races & data clobbering.

arch/mips/mm/tlb-r3k.c

···
 	int idx, pid;
 
 	/*
-	 * Handle debugger faulting in for debugee.
+	 * Handle debugger faulting in for debuggee.
 	 */
 	if (current->active_mm != vma->vm_mm)
 		return;

arch/mips/mm/tlb-r4k.c

···
 	int idx, pid;
 
 	/*
-	 * Handle debugger faulting in for debugee.
+	 * Handle debugger faulting in for debuggee.
 	 */
 	if (current->active_mm != vma->vm_mm)
 		return;

arch/mips/mm/tlbex.c

···
 
 	if (check_for_high_segbits) {
 		/*
-		 * The kernel currently implicitely assumes that the
+		 * The kernel currently implicitly assumes that the
 		 * MIPS SEGBITS parameter for the processor is
 		 * (PGDIR_SHIFT+PGDIR_BITS) or less, and will never
 		 * allocate virtual addresses outside the maximum
···
 /*
  * Check if PTE is present, if not then jump to LABEL. PTR points to
  * the page table where this PTE is located, PTE will be re-loaded
- * with it's original value.
+ * with its original value.
  */
 static void
 build_pte_present(u32 **p, struct uasm_reloc **r,

arch/mips/net/bpf_jit_comp32.c

···
 /*
  * Mapping of 64-bit eBPF registers to 32-bit native MIPS registers.
  *
- * 1) Native register pairs are ordered according to CPU endiannes, following
+ * 1) Native register pairs are ordered according to CPU endianness, following
  *    the MIPS convention for passing 64-bit arguments and return values.
  * 2) The eBPF return value, arguments and callee-saved registers are mapped
  *    to their native MIPS equivalents.

arch/mips/pci/ops-loongson2.c

···
 		 */
 #ifdef CONFIG_CS5536
 		/* cs5536_pci_conf_read4/write4() will call _rdmsr/_wrmsr() to
-		 * access the regsters PCI_MSR_ADDR, PCI_MSR_DATA_LO,
+		 * access the registers PCI_MSR_ADDR, PCI_MSR_DATA_LO,
 		 * PCI_MSR_DATA_HI, which is bigger than PCI_MSR_CTRL, so, it
 		 * will not go this branch, but the others. so, no calling dead
 		 * loop here.

arch/mips/pci/pci-alchemy.c

···
 
 	/* we can't ioremap the entire pci config space because it's too large,
 	 * nor can we dynamically ioremap it because some drivers use the
-	 * PCI config routines from within atomic contex and that becomes a
+	 * PCI config routines from within atomic context and that becomes a
 	 * problem in get_vm_area().  Instead we use one wired TLB entry to
 	 * handle all config accesses for all busses.
 	 */

arch/mips/pci/pci-ar2315.c

···
  * the CFG_SEL bit in the PCI_MISC_CONFIG register.
  *
  * Devices on the bus can perform DMA requests via chip BAR1. PCI host
- * controller BARs are programmend as if an external device is programmed.
+ * controller BARs are programmed as if an external device is programmed.
  * Which means that during configuration, IDSEL pin of the chip should be
  * asserted.
  *

arch/mips/pci/pci-lantiq.c

···
 		temp_buffer &= ~0xf0000;
 	/* enable internal arbiter */
 	temp_buffer |= (1 << INTERNAL_ARB_ENABLE_BIT);
-	/* enable internal PCI master reqest */
+	/* enable internal PCI master request */
 	temp_buffer &= (~(3 << PCI_MASTER0_REQ_MASK_2BITS));
 
 	/* enable EBU request */

arch/mips/pci/pci-octeon.c

···
 	ctl_status.s.timer = 1;
 	cvmx_write_csr(CVMX_NPI_CTL_STATUS, ctl_status.u64);
 
-	/* Deassert PCI reset and advertize PCX Host Mode Device Capability
+	/* Deassert PCI reset and advertise PCX Host Mode Device Capability
 	   (64b) */
 	cvmx_write_csr(CVMX_CIU_SOFT_PRST, 0x4);
 	cvmx_read_csr(CVMX_CIU_SOFT_PRST);

arch/mips/pci/pci-xtalk-bridge.c

···
  *
  * The function is complicated by the ultimate brokenness of the IOC3 chip
  * which is used in SGI systems.  The IOC3 can only handle 32-bit PCI
- * accesses and does only decode parts of it's address space.
+ * accesses and does only decode parts of its address space.
  */
 static int pci_conf0_read_config(struct pci_bus *bus, unsigned int devfn,
 				 int where, int size, u32 *value)

arch/mips/pci/pcie-octeon.c

···
 			in_fif_p_count = dbg_data.s.data & 0xff;
 		} while (in_fif_p_count != ((old_in_fif_p_count+1) & 0xff));
 
-		/* Update in_fif_p_count for it's offset with respect to out_p_count */
+		/* Update in_fif_p_count for its offset with respect to out_p_count */
 		in_fif_p_count = (in_fif_p_count + in_p_offset) & 0xff;
 
 		/* Read the OUT_P_COUNT from the debug select */

arch/mips/ralink/mt7621.c

···
 		 * mips_cm_probe() wipes out bootloader
 		 * config for CM regions and we have to configure them
 		 * again. This SoC cannot talk to pamlbus devices
-		 * witout proper iocu region set up.
+		 * without proper iocu region set up.
 		 *
 		 * FIXME: it would be better to do this with values
 		 * from DT, but we need this very early because

arch/mips/sgi-ip27/ip27-hubio.c

···
 /**
  * hub_pio_map	-  establish a HUB PIO mapping
  *
- * @hub:	hub to perform PIO mapping on
+ * @nasid:	nasid to perform PIO mapping on
  * @widget:	widget ID to perform PIO mapping for
  * @xtalk_addr: xtalk_address that needs to be mapped
  * @size:	size of the PIO mapping

arch/mips/txx9/generic/pci.c

···
 	unsigned char bist;
 	int ret;
 
-	/* Do build-in self test */
+	/* Do built-in self test */
 	ret = pci_read_config_byte(dev, PCI_BIST, &bist);
 	if ((ret != PCIBIOS_SUCCESSFUL) || !(bist & PCI_BIST_CAPABLE))
 		return;