Merge tag 'acpi-4.9-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull ACPI fixes from Rafael Wysocki:
"They fix an ACPI thermal management regression introduced by a recent
FADT handling cleanup, an ACPI tools build issue introduced by a
recent ACPICA commit and a PCC mailbox initialization bug causing
lockdep to complain loudly.

Specifics:

- Revert a recent ACPICA cleanup that attempted to get rid of all
FADT version 2 legacy, but broke ACPI thermal management on at
least one system (Rafael Wysocki).

- Fix cross-compiled builds of ACPI tools that stopped working after
a recent cleanup related to the handling of header files in ACPICA
(Lv Zheng).

- Fix a locking issue in the PCC channel initialization code that
invokes devm_request_irq() under a spinlock (among other things)
and causes lockdep to complain (Hoan Tran)"

* tag 'acpi-4.9-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
tools/power/acpi: Remove direct kernel source include reference
mailbox: PCC: Fix lockdep warning when request PCC channel
Revert "ACPICA: FADT support cleanup"

drivers/acpi/acpica/tbfadt.c

···
 	u32 i;
 
 	/*
-	 * For ACPI 1.0 FADTs (revision 1), ensure that reserved fields which
+	 * For ACPI 1.0 FADTs (revision 1 or 2), ensure that reserved fields which
 	 * should be zero are indeed zero. This will workaround BIOSs that
 	 * inadvertently place values in these fields.
 	 *
 	 * The ACPI 1.0 reserved fields that will be zeroed are the bytes located
 	 * at offset 45, 55, 95, and the word located at offset 109, 110.
 	 *
-	 * Note: The FADT revision value is unreliable because of BIOS errors.
-	 * The table length is instead used as the final word on the version.
-	 *
-	 * Note: FADT revision 3 is the ACPI 2.0 version of the FADT.
+	 * Note: The FADT revision value is unreliable. Only the length can be
+	 * trusted.
 	 */
-	if (acpi_gbl_FADT.header.length <= ACPI_FADT_V3_SIZE) {
+	if (acpi_gbl_FADT.header.length <= ACPI_FADT_V2_SIZE) {
 		acpi_gbl_FADT.preferred_profile = 0;
 		acpi_gbl_FADT.pstate_control = 0;
 		acpi_gbl_FADT.cst_control = 0;

drivers/mailbox/pcc.c

···
 #include <linux/mailbox_controller.h>
 #include <linux/mailbox_client.h>
 #include <linux/io-64-nonatomic-lo-hi.h>
+#include <acpi/pcc.h>
 
 #include "mailbox.h"
 
···
 	if (chan->txdone_method == TXDONE_BY_POLL && cl->knows_txdone)
 		chan->txdone_method |= TXDONE_BY_ACK;
 
+	spin_unlock_irqrestore(&chan->lock, flags);
+
 	if (pcc_doorbell_irq[subspace_id] > 0) {
 		int rc;
 
···
 		if (unlikely(rc)) {
 			dev_err(dev, "failed to register PCC interrupt %d\n",
 				pcc_doorbell_irq[subspace_id]);
+			pcc_mbox_free_channel(chan);
 			chan = ERR_PTR(rc);
 		}
 	}
-
-	spin_unlock_irqrestore(&chan->lock, flags);
 
 	return chan;
 }
···
 		return;
 	}
 
+	if (pcc_doorbell_irq[id] > 0)
+		devm_free_irq(chan->mbox->dev, pcc_doorbell_irq[id], chan);
+
 	spin_lock_irqsave(&chan->lock, flags);
 	chan->cl = NULL;
 	chan->active_req = NULL;
 	if (chan->txdone_method == (TXDONE_BY_POLL | TXDONE_BY_ACK))
 		chan->txdone_method = TXDONE_BY_POLL;
 
-	if (pcc_doorbell_irq[id] > 0)
-		devm_free_irq(chan->mbox->dev, pcc_doorbell_irq[id], chan);
-
 	spin_unlock_irqrestore(&chan->lock, flags);
 }
 EXPORT_SYMBOL_GPL(pcc_mbox_free_channel);
-
 
 /**
  * pcc_send_data - Called from Mailbox Controller code. Used

include/acpi/actbl.h

···
 /* Fields common to all versions of the FADT */
 
 struct acpi_table_fadt {
-	struct acpi_table_header header;	/* [V1] Common ACPI table header */
-	u32 facs;		/* [V1] 32-bit physical address of FACS */
-	u32 dsdt;		/* [V1] 32-bit physical address of DSDT */
-	u8 model;		/* [V1] System Interrupt Model (ACPI 1.0) - not used in ACPI 2.0+ */
-	u8 preferred_profile;	/* [V1] Conveys preferred power management profile to OSPM. */
-	u16 sci_interrupt;	/* [V1] System vector of SCI interrupt */
-	u32 smi_command;	/* [V1] 32-bit Port address of SMI command port */
-	u8 acpi_enable;		/* [V1] Value to write to SMI_CMD to enable ACPI */
-	u8 acpi_disable;	/* [V1] Value to write to SMI_CMD to disable ACPI */
-	u8 s4_bios_request;	/* [V1] Value to write to SMI_CMD to enter S4BIOS state */
-	u8 pstate_control;	/* [V1] Processor performance state control */
-	u32 pm1a_event_block;	/* [V1] 32-bit port address of Power Mgt 1a Event Reg Blk */
-	u32 pm1b_event_block;	/* [V1] 32-bit port address of Power Mgt 1b Event Reg Blk */
-	u32 pm1a_control_block;	/* [V1] 32-bit port address of Power Mgt 1a Control Reg Blk */
-	u32 pm1b_control_block;	/* [V1] 32-bit port address of Power Mgt 1b Control Reg Blk */
-	u32 pm2_control_block;	/* [V1] 32-bit port address of Power Mgt 2 Control Reg Blk */
-	u32 pm_timer_block;	/* [V1] 32-bit port address of Power Mgt Timer Ctrl Reg Blk */
-	u32 gpe0_block;		/* [V1] 32-bit port address of General Purpose Event 0 Reg Blk */
-	u32 gpe1_block;		/* [V1] 32-bit port address of General Purpose Event 1 Reg Blk */
-	u8 pm1_event_length;	/* [V1] Byte Length of ports at pm1x_event_block */
-	u8 pm1_control_length;	/* [V1] Byte Length of ports at pm1x_control_block */
-	u8 pm2_control_length;	/* [V1] Byte Length of ports at pm2_control_block */
-	u8 pm_timer_length;	/* [V1] Byte Length of ports at pm_timer_block */
-	u8 gpe0_block_length;	/* [V1] Byte Length of ports at gpe0_block */
-	u8 gpe1_block_length;	/* [V1] Byte Length of ports at gpe1_block */
-	u8 gpe1_base;		/* [V1] Offset in GPE number space where GPE1 events start */
-	u8 cst_control;		/* [V1] Support for the _CST object and C-States change notification */
-	u16 c2_latency;		/* [V1] Worst case HW latency to enter/exit C2 state */
-	u16 c3_latency;		/* [V1] Worst case HW latency to enter/exit C3 state */
-	u16 flush_size;		/* [V1] Processor memory cache line width, in bytes */
-	u16 flush_stride;	/* [V1] Number of flush strides that need to be read */
-	u8 duty_offset;		/* [V1] Processor duty cycle index in processor P_CNT reg */
-	u8 duty_width;		/* [V1] Processor duty cycle value bit width in P_CNT register */
-	u8 day_alarm;		/* [V1] Index to day-of-month alarm in RTC CMOS RAM */
-	u8 month_alarm;		/* [V1] Index to month-of-year alarm in RTC CMOS RAM */
-	u8 century;		/* [V1] Index to century in RTC CMOS RAM */
-	u16 boot_flags;		/* [V3] IA-PC Boot Architecture Flags (see below for individual flags) */
-	u8 reserved;		/* [V1] Reserved, must be zero */
-	u32 flags;		/* [V1] Miscellaneous flag bits (see below for individual flags) */
-	/* End of Version 1 FADT fields (ACPI 1.0) */
-
-	struct acpi_generic_address reset_register;	/* [V3] 64-bit address of the Reset register */
-	u8 reset_value;		/* [V3] Value to write to the reset_register port to reset the system */
-	u16 arm_boot_flags;	/* [V5] ARM-Specific Boot Flags (see below for individual flags) (ACPI 5.1) */
-	u8 minor_revision;	/* [V5] FADT Minor Revision (ACPI 5.1) */
-	u64 Xfacs;		/* [V3] 64-bit physical address of FACS */
-	u64 Xdsdt;		/* [V3] 64-bit physical address of DSDT */
-	struct acpi_generic_address xpm1a_event_block;	/* [V3] 64-bit Extended Power Mgt 1a Event Reg Blk address */
-	struct acpi_generic_address xpm1b_event_block;	/* [V3] 64-bit Extended Power Mgt 1b Event Reg Blk address */
-	struct acpi_generic_address xpm1a_control_block;	/* [V3] 64-bit Extended Power Mgt 1a Control Reg Blk address */
-	struct acpi_generic_address xpm1b_control_block;	/* [V3] 64-bit Extended Power Mgt 1b Control Reg Blk address */
-	struct acpi_generic_address xpm2_control_block;	/* [V3] 64-bit Extended Power Mgt 2 Control Reg Blk address */
-	struct acpi_generic_address xpm_timer_block;	/* [V3] 64-bit Extended Power Mgt Timer Ctrl Reg Blk address */
-	struct acpi_generic_address xgpe0_block;	/* [V3] 64-bit Extended General Purpose Event 0 Reg Blk address */
-	struct acpi_generic_address xgpe1_block;	/* [V3] 64-bit Extended General Purpose Event 1 Reg Blk address */
-	/* End of Version 3 FADT fields (ACPI 2.0) */
-
-	struct acpi_generic_address sleep_control;	/* [V4] 64-bit Sleep Control register (ACPI 5.0) */
-	/* End of Version 4 FADT fields (ACPI 3.0 and ACPI 4.0) (Field was originally reserved in ACPI 3.0) */
-
-	struct acpi_generic_address sleep_status;	/* [V5] 64-bit Sleep Status register (ACPI 5.0) */
-	/* End of Version 5 FADT fields (ACPI 5.0) */
-
-	u64 hypervisor_id;	/* [V6] Hypervisor Vendor ID (ACPI 6.0) */
-	/* End of Version 6 FADT fields (ACPI 6.0) */
-
+	struct acpi_table_header header;	/* Common ACPI table header */
+	u32 facs;		/* 32-bit physical address of FACS */
+	u32 dsdt;		/* 32-bit physical address of DSDT */
+	u8 model;		/* System Interrupt Model (ACPI 1.0) - not used in ACPI 2.0+ */
+	u8 preferred_profile;	/* Conveys preferred power management profile to OSPM. */
+	u16 sci_interrupt;	/* System vector of SCI interrupt */
+	u32 smi_command;	/* 32-bit Port address of SMI command port */
+	u8 acpi_enable;		/* Value to write to SMI_CMD to enable ACPI */
+	u8 acpi_disable;	/* Value to write to SMI_CMD to disable ACPI */
+	u8 s4_bios_request;	/* Value to write to SMI_CMD to enter S4BIOS state */
+	u8 pstate_control;	/* Processor performance state control */
+	u32 pm1a_event_block;	/* 32-bit port address of Power Mgt 1a Event Reg Blk */
+	u32 pm1b_event_block;	/* 32-bit port address of Power Mgt 1b Event Reg Blk */
+	u32 pm1a_control_block;	/* 32-bit port address of Power Mgt 1a Control Reg Blk */
+	u32 pm1b_control_block;	/* 32-bit port address of Power Mgt 1b Control Reg Blk */
+	u32 pm2_control_block;	/* 32-bit port address of Power Mgt 2 Control Reg Blk */
+	u32 pm_timer_block;	/* 32-bit port address of Power Mgt Timer Ctrl Reg Blk */
+	u32 gpe0_block;		/* 32-bit port address of General Purpose Event 0 Reg Blk */
+	u32 gpe1_block;		/* 32-bit port address of General Purpose Event 1 Reg Blk */
+	u8 pm1_event_length;	/* Byte Length of ports at pm1x_event_block */
+	u8 pm1_control_length;	/* Byte Length of ports at pm1x_control_block */
+	u8 pm2_control_length;	/* Byte Length of ports at pm2_control_block */
+	u8 pm_timer_length;	/* Byte Length of ports at pm_timer_block */
+	u8 gpe0_block_length;	/* Byte Length of ports at gpe0_block */
+	u8 gpe1_block_length;	/* Byte Length of ports at gpe1_block */
+	u8 gpe1_base;		/* Offset in GPE number space where GPE1 events start */
+	u8 cst_control;		/* Support for the _CST object and C-States change notification */
+	u16 c2_latency;		/* Worst case HW latency to enter/exit C2 state */
+	u16 c3_latency;		/* Worst case HW latency to enter/exit C3 state */
+	u16 flush_size;		/* Processor memory cache line width, in bytes */
+	u16 flush_stride;	/* Number of flush strides that need to be read */
+	u8 duty_offset;		/* Processor duty cycle index in processor P_CNT reg */
+	u8 duty_width;		/* Processor duty cycle value bit width in P_CNT register */
+	u8 day_alarm;		/* Index to day-of-month alarm in RTC CMOS RAM */
+	u8 month_alarm;		/* Index to month-of-year alarm in RTC CMOS RAM */
+	u8 century;		/* Index to century in RTC CMOS RAM */
+	u16 boot_flags;		/* IA-PC Boot Architecture Flags (see below for individual flags) */
+	u8 reserved;		/* Reserved, must be zero */
+	u32 flags;		/* Miscellaneous flag bits (see below for individual flags) */
+	struct acpi_generic_address reset_register;	/* 64-bit address of the Reset register */
+	u8 reset_value;		/* Value to write to the reset_register port to reset the system */
+	u16 arm_boot_flags;	/* ARM-Specific Boot Flags (see below for individual flags) (ACPI 5.1) */
+	u8 minor_revision;	/* FADT Minor Revision (ACPI 5.1) */
+	u64 Xfacs;		/* 64-bit physical address of FACS */
+	u64 Xdsdt;		/* 64-bit physical address of DSDT */
+	struct acpi_generic_address xpm1a_event_block;	/* 64-bit Extended Power Mgt 1a Event Reg Blk address */
+	struct acpi_generic_address xpm1b_event_block;	/* 64-bit Extended Power Mgt 1b Event Reg Blk address */
+	struct acpi_generic_address xpm1a_control_block;	/* 64-bit Extended Power Mgt 1a Control Reg Blk address */
+	struct acpi_generic_address xpm1b_control_block;	/* 64-bit Extended Power Mgt 1b Control Reg Blk address */
+	struct acpi_generic_address xpm2_control_block;	/* 64-bit Extended Power Mgt 2 Control Reg Blk address */
+	struct acpi_generic_address xpm_timer_block;	/* 64-bit Extended Power Mgt Timer Ctrl Reg Blk address */
+	struct acpi_generic_address xgpe0_block;	/* 64-bit Extended General Purpose Event 0 Reg Blk address */
+	struct acpi_generic_address xgpe1_block;	/* 64-bit Extended General Purpose Event 1 Reg Blk address */
+	struct acpi_generic_address sleep_control;	/* 64-bit Sleep Control register (ACPI 5.0) */
+	struct acpi_generic_address sleep_status;	/* 64-bit Sleep Status register (ACPI 5.0) */
+	u64 hypervisor_id;	/* Hypervisor Vendor ID (ACPI 6.0) */
 };
 
 /* Masks for FADT IA-PC Boot Architecture Flags (boot_flags) [Vx]=Introduced in this FADT revision */
···
 
 /* Masks for FADT ARM Boot Architecture Flags (arm_boot_flags) ACPI 5.1 */
 
-#define ACPI_FADT_PSCI_COMPLIANT    (1)	/* 00: [V5] PSCI 0.2+ is implemented */
-#define ACPI_FADT_PSCI_USE_HVC      (1<<1)	/* 01: [V5] HVC must be used instead of SMC as the PSCI conduit */
+#define ACPI_FADT_PSCI_COMPLIANT    (1)	/* 00: [V5+] PSCI 0.2+ is implemented */
+#define ACPI_FADT_PSCI_USE_HVC      (1<<1)	/* 01: [V5+] HVC must be used instead of SMC as the PSCI conduit */
 
 /* Masks for FADT flags */
 
···
  * match the expected length. In other words, the length of the
  * FADT is the bottom line as to what the version really is.
  *
- * NOTE: There is no officialy released V2 of the FADT. This
- * version was used only for prototyping and testing during the
- * 32-bit to 64-bit transition. V3 was the first official 64-bit
- * version of the FADT.
- *
- * Update this list of defines when a new version of the FADT is
- * added to the ACPI specification. Note that the FADT version is
- * only incremented when new fields are appended to the existing
- * version. Therefore, the FADT version is competely independent
- * from the version of the ACPI specification where it is
- * defined.
- *
- * For reference, the various FADT lengths are as follows:
- *     FADT V1 size: 0x074      ACPI 1.0
- *     FADT V3 size: 0x0F4      ACPI 2.0
- *     FADT V4 size: 0x100      ACPI 3.0 and ACPI 4.0
- *     FADT V5 size: 0x10C      ACPI 5.0
- *     FADT V6 size: 0x114      ACPI 6.0
+ * For reference, the values below are as follows:
+ *     FADT V1 size: 0x074
+ *     FADT V2 size: 0x084
+ *     FADT V3 size: 0x0F4
+ *     FADT V4 size: 0x0F4
+ *     FADT V5 size: 0x10C
+ *     FADT V6 size: 0x114
  */
-#define ACPI_FADT_V1_SIZE       (u32) (ACPI_FADT_OFFSET (flags) + 4)	/* ACPI 1.0 */
-#define ACPI_FADT_V3_SIZE       (u32) (ACPI_FADT_OFFSET (sleep_control))	/* ACPI 2.0 */
-#define ACPI_FADT_V4_SIZE       (u32) (ACPI_FADT_OFFSET (sleep_status))	/* ACPI 3.0 and ACPI 4.0 */
-#define ACPI_FADT_V5_SIZE       (u32) (ACPI_FADT_OFFSET (hypervisor_id))	/* ACPI 5.0 */
-#define ACPI_FADT_V6_SIZE       (u32) (sizeof (struct acpi_table_fadt))	/* ACPI 6.0 */
+#define ACPI_FADT_V1_SIZE       (u32) (ACPI_FADT_OFFSET (flags) + 4)
+#define ACPI_FADT_V2_SIZE       (u32) (ACPI_FADT_OFFSET (minor_revision) + 1)
+#define ACPI_FADT_V3_SIZE       (u32) (ACPI_FADT_OFFSET (sleep_control))
+#define ACPI_FADT_V5_SIZE       (u32) (ACPI_FADT_OFFSET (hypervisor_id))
+#define ACPI_FADT_V6_SIZE       (u32) (sizeof (struct acpi_table_fadt))
 
-/* Update these when new FADT versions are added */
-
-#define ACPI_FADT_MAX_VERSION   6
 #define ACPI_FADT_CONFORMANCE   "ACPI 6.1 (FADT version 6)"
 
 #endif				/* __ACTBL_H__ */

include/acpi/platform/aclinux.h

···
 #ifndef __init
 #define __init
 #endif
+#ifndef __iomem
+#define __iomem
+#endif
 
 /* Host-dependent types and defines for user-space ACPICA */
 

tools/power/acpi/Makefile.config

···
 # as published by the Free Software Foundation; version 2
 # of the License.
 
-include ../../../../scripts/Makefile.include
+ifeq ($(srctree),)
+srctree := $(patsubst %/,%,$(dir $(shell pwd)))
+srctree := $(patsubst %/,%,$(dir $(srctree)))
+#$(info Determined 'srctree' to be $(srctree))
+endif
 
-OUTPUT=./
+include $(srctree)/../../scripts/Makefile.include
+
+OUTPUT=$(srctree)/
 ifeq ("$(origin O)", "command line")
-	OUTPUT := $(O)/
+	OUTPUT := $(O)/power/acpi/
 endif
-
-ifneq ($(OUTPUT),)
-# check that the output directory actually exists
-OUTDIR := $(shell cd $(OUTPUT) && /bin/pwd)
-$(if $(OUTDIR),, $(error output directory "$(OUTPUT)" does not exist))
-endif
+#$(info Determined 'OUTPUT' to be $(OUTPUT))
 
 # --- CONFIGURATION BEGIN ---
 
···
 WARNINGS += $(call cc-supports,-Wstrict-prototypes)
 WARNINGS += $(call cc-supports,-Wdeclaration-after-statement)
 
-KERNEL_INCLUDE := ../../../include
-ACPICA_INCLUDE := ../../../drivers/acpi/acpica
+KERNEL_INCLUDE := $(OUTPUT)include
+ACPICA_INCLUDE := $(srctree)/../../../drivers/acpi/acpica
 CFLAGS += -D_LINUX -I$(KERNEL_INCLUDE) -I$(ACPICA_INCLUDE)
 CFLAGS += $(WARNINGS)
 

tools/power/acpi/Makefile.rules

···
 # as published by the Free Software Foundation; version 2
 # of the License.
 
-$(OUTPUT)$(TOOL): $(TOOL_OBJS) FORCE
-	$(ECHO) "  LD      " $@
-	$(QUIET) $(LD) $(CFLAGS) $(LDFLAGS) $(TOOL_OBJS) -L$(OUTPUT) -o $@
+objdir := $(OUTPUT)tools/$(TOOL)/
+toolobjs := $(addprefix $(objdir),$(TOOL_OBJS))
+$(OUTPUT)$(TOOL): $(toolobjs) FORCE
+	$(ECHO) "  LD      " $(subst $(OUTPUT),,$@)
+	$(QUIET) $(LD) $(CFLAGS) $(LDFLAGS) $(toolobjs) -L$(OUTPUT) -o $@
+	$(ECHO) "  STRIP   " $(subst $(OUTPUT),,$@)
 	$(QUIET) $(STRIPCMD) $@
 
-$(OUTPUT)%.o: %.c
-	$(ECHO) "  CC      " $@
+$(KERNEL_INCLUDE):
+	$(ECHO) "  MKDIR   " $(subst $(OUTPUT),,$@)
+	$(QUIET) mkdir -p $(KERNEL_INCLUDE)
+	$(ECHO) "  CP      " $(subst $(OUTPUT),,$@)
+	$(QUIET) cp -rf $(srctree)/../../../include/acpi $(KERNEL_INCLUDE)/
+
+$(objdir)%.o: %.c $(KERNEL_INCLUDE)
+	$(ECHO) "  CC      " $(subst $(OUTPUT),,$@)
 	$(QUIET) $(CC) -c $(CFLAGS) -o $@ $<
 
 all: $(OUTPUT)$(TOOL)
 clean:
-	-find $(OUTPUT) \( -not -type d \) \
-	-and \( -name '*~' -o -name '*.[oas]' \) \
-	-type f -print \
-	 | xargs rm -f
-	-rm -f $(OUTPUT)$(TOOL)
+	$(ECHO) "  RMOBJ   " $(subst $(OUTPUT),,$(objdir))
+	$(QUIET) find $(objdir) \( -not -type d \)\
+		 -and \( -name '*~' -o -name '*.[oas]' \)\
+		 -type f -print | xargs rm -f
+	$(ECHO) "  RM      " $(TOOL)
+	$(QUIET) rm -f $(OUTPUT)$(TOOL)
+	$(ECHO) "  RMINC   " $(subst $(OUTPUT),,$(KERNEL_INCLUDE))
+	$(QUIET) rm -rf $(KERNEL_INCLUDE)
 
 install-tools:
-	$(INSTALL) -d $(DESTDIR)${sbindir}
-	$(INSTALL_PROGRAM) $(OUTPUT)$(TOOL) $(DESTDIR)${sbindir}
+	$(ECHO) "  INST    " $(TOOL)
+	$(QUIET) $(INSTALL) -d $(DESTDIR)$(sbindir)
+	$(QUIET) $(INSTALL_PROGRAM) $(OUTPUT)$(TOOL) $(DESTDIR)$(sbindir)
 uninstall-tools:
-	- rm -f $(DESTDIR)${sbindir}/$(TOOL)
+	$(ECHO) "  UNINST  " $(TOOL)
+	$(QUIET) rm -f $(DESTDIR)$(sbindir)/$(TOOL)
 
 install: all install-tools $(EXTRA_INSTALL)
 uninstall: uninstall-tools $(EXTRA_UNINSTALL)

tools/power/acpi/tools/acpidbg/Makefile

···
 	../../os_specific/service_layers\
 	.
 CFLAGS += -DACPI_APPLICATION -DACPI_SINGLE_THREAD -DACPI_DEBUGGER\
-	-I.\
-	-I../../../../../drivers/acpi/acpica\
-	-I../../../../../include
+	-I.
 LDFLAGS += -lpthread
 TOOL_OBJS = \
 	acpidbg.o

tools/power/acpi/tools/acpidbg/acpidbg.c

···
 #include <acpi/acpi.h>
 
 /* Headers not included by include/acpi/platform/aclinux.h */
+#include <unistd.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <error.h>
 #include <stdbool.h>
 #include <fcntl.h>
 #include <assert.h>
-#include <linux/circ_buf.h>
+#include <sys/select.h>
+#include "../../../../../include/linux/circ_buf.h"
 
 #define ACPI_AML_FILE		"/sys/kernel/debug/acpi/acpidbg"
 #define ACPI_AML_SEC_TICK	1

tools/power/acpi/tools/acpidump/Makefile

···
 	./\
 	../../common\
 	../../os_specific/service_layers
-CFLAGS += -DACPI_DUMP_APP -I.\
-	-I../../../../../drivers/acpi/acpica\
-	-I../../../../../include
+CFLAGS += -DACPI_DUMP_APP -I.
 TOOL_OBJS = \
 	apdump.o\
 	apfiles.o\
···
 
 include ../../Makefile.rules
 
-install-man: ../../man/acpidump.8
-	$(INSTALL_DATA) -D $< $(DESTDIR)${mandir}/man8/acpidump.8
+install-man: $(srctree)/man/acpidump.8
+	$(ECHO) "  INST    " acpidump.8
+	$(QUIET) $(INSTALL_DATA) -D $< $(DESTDIR)$(mandir)/man8/acpidump.8
 uninstall-man:
-	- rm -f $(DESTDIR)${mandir}/man8/acpidump.8
+	$(ECHO) "  UNINST  " acpidump.8
+	$(QUIET) rm -f $(DESTDIR)$(mandir)/man8/acpidump.8