Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6

6b410160 · Linus Torvalds <[email protected]> · 2007-11-26 19:09:58 -08:00

* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6: (39 commits)
  ACPI: EC: Workaround for optimized controllers (version 3)
  ACPI: EC: use printk_ratelimit(), add some DEBUG mode messages
  Revert "ACPI: EC: Workaround for optimized controllers"
  ACPI: fix two IRQ8 issues in IOAPIC mode
  ACPI: Add missing spaces to printk format
  cpuidle: fix HP nx6125 regression
  cpuidle: add sched_clock_idle_[sleep|wakeup]_event() hooks
  cpuidle: fix C3 for no bus-master control case
  ACPI: thinkpad-acpi: fix oops when a module parameter has no value
  Revert "Fix very high interrupt rate for IRQ8 (rtc) unless pnpacpi=off"
  ACPI: EC: Don't init EC early if it has no _INI
  Revert "acpi: make ACPI_PROCFS default to y"
  Revert "ACPI: add documentation for deprecated /proc/acpi/battery in ACPI_PROCFS"
  ACPI: Split out control for /proc/acpi entries from battery, ac, and sbs.
  ACPI: Video: Increase buffer size for writes to brightness proc file.
  ACPI: EC: Workaround for optimized controllers
  ACPI: SBS: Fix retval warning
  ACPI: Enable MSR (FixedHW) support for T-States
  ACPI: Get throttling info from BIOS only after evaluating _PDC
  ACPI: Use _TSS for throttling control, when present. Add error checks.
  ...

Commit: 6b41016032accca5a0ca8bbd35ec5fd7f7bc3aeb
Parents: 9ccc2362 · a3f095ad

Merge commit. Changes below are compared with the first parent: 9ccc2362.

Changes

24 files changed · +813 −382

File	Status	Add	Del	Content
Documentation/thinkpad-acpi.txt	modified	+45	−28	View file
arch/x86/kernel/acpi/processor.c	modified	+3	−0	View file
arch/x86/kernel/acpi/sleep_64.c	modified	+0	−3	View file
arch/x86/kernel/io_apic_32.c	modified	+20	−1	View file
arch/x86/kernel/io_apic_64.c	modified	+22	−2	View file
arch/x86/pci/acpi.c	modified	+1	−1	View file
drivers/acpi/Kconfig	modified	+15	−3	View file
drivers/acpi/Makefile	modified	+1	−1	View file
drivers/acpi/ac.c	modified	+10	−10	View file
drivers/acpi/battery.c	modified	+12	−10	View file
drivers/acpi/ec.c	modified	+70	−30	View file
drivers/acpi/osl.c	modified	+9	−16	View file
drivers/acpi/processor_core.c	modified	+11	−8	View file
drivers/acpi/processor_idle.c	modified	+63	−48	View file
drivers/acpi/processor_throttling.c	modified	+226	−60	View file
drivers/acpi/sbs.c	modified	+26	−17	View file
drivers/acpi/tables/tbutils.c	modified	+1	−1	View file
drivers/acpi/video.c	modified	+75	−80	View file
drivers/misc/thinkpad_acpi.c	modified	+178	−53	View file
drivers/misc/thinkpad_acpi.h	modified	+3	−1	View file
drivers/pnp/pnpacpi/rsparser.c	modified	+16	−8	View file
include/acpi/processor.h	modified	+0	−1	View file
include/linux/acpi.h	modified	+5	−0	View file
include/linux/cpuidle.h	modified	+1	−0	View file

Only the first 600 diff lines are shown. Download the complete patch.

Documentation/thinkpad-acpi.txt

View file

diff --git a/Documentation/thinkpad-acpi.txt b/Documentation/thinkpad-acpi.txt
index ec49926..10c041c 100644
--- a/Documentation/thinkpad-acpi.txt
+++ b/Documentation/thinkpad-acpi.txt
@@ -1,7 +1,7 @@
 		     ThinkPad ACPI Extras Driver
 
-                            Version 0.16
-                          August 2nd, 2007
+                            Version 0.17
+                         October 04th, 2007
 
                Borislav Deianov <[email protected]>
              Henrique de Moraes Holschuh <[email protected]>
@@ -923,19 +923,34 @@ sysfs backlight device "thinkpad_screen"
 This feature allows software control of the LCD brightness on ThinkPad
 models which don't have a hardware brightness slider.
 
-It has some limitations: the LCD backlight cannot be actually turned on or off
-by this interface, and in many ThinkPad models, the "dim while on battery"
-functionality will be enabled by the BIOS when this interface is used, and
-cannot be controlled.
-
-The backlight control has eight levels, ranging from 0 to 7.  Some of the
-levels may not be distinct.
-
-There are two interfaces to the firmware for brightness control, EC and CMOS.
-To select which one should be used, use the brightness_mode module parameter:
-brightness_mode=1 selects EC mode, brightness_mode=2 selects CMOS mode,
-brightness_mode=3 selects both EC and CMOS.  The driver tries to autodetect
-which interface to use.
+It has some limitations: the LCD backlight cannot be actually turned on or
+off by this interface, and in many ThinkPad models, the "dim while on
+battery" functionality will be enabled by the BIOS when this interface is
+used, and cannot be controlled.
+
+On IBM (and some of the earlier Lenovo) ThinkPads, the backlight control
+has eight brightness levels, ranging from 0 to 7.  Some of the levels
+may not be distinct.  Later Lenovo models that implement the ACPI
+display backlight brightness control methods have 16 levels, ranging
+from 0 to 15.
+
+There are two interfaces to the firmware for direct brightness control,
+EC and CMOS.  To select which one should be used, use the
+brightness_mode module parameter: brightness_mode=1 selects EC mode,
+brightness_mode=2 selects CMOS mode, brightness_mode=3 selects both EC
+and CMOS.  The driver tries to autodetect which interface to use.
+
+When display backlight brightness controls are available through the
+standard ACPI interface, it is best to use it instead of this direct
+ThinkPad-specific interface.  The driver will disable its native
+backlight brightness control interface if it detects that the standard
+ACPI interface is available in the ThinkPad.
+
+The brightness_enable module parameter can be used to control whether
+the LCD brightness control feature will be enabled when available.
+brightness_enable=0 forces it to be disabled.  brightness_enable=1
+forces it to be enabled when available, even if the standard ACPI
+interface is also available.
 
 Procfs notes:
 
@@ -947,11 +962,11 @@ Procfs notes:
 
 Sysfs notes:
 
-The interface is implemented through the backlight sysfs class, which is poorly
-documented at this time.
+The interface is implemented through the backlight sysfs class, which is
+poorly documented at this time.
 
-Locate the thinkpad_screen device under /sys/class/backlight, and inside it
-there will be the following attributes:
+Locate the thinkpad_screen device under /sys/class/backlight, and inside
+it there will be the following attributes:
 
 	max_brightness:
 		Reads the maximum brightness the hardware can be set to.
@@ -961,17 +976,19 @@ there will be the following attributes:
 		Reads what brightness the screen is set to at this instant.
 
 	brightness:
-		Writes request the driver to change brightness to the given
-		value.  Reads will tell you what brightness the driver is trying
-		to set the display to when "power" is set to zero and the display
-		has not been dimmed by a kernel power management event.
+		Writes request the driver to change brightness to the
+		given value.  Reads will tell you what brightness the
+		driver is trying to set the display to when "power" is set
+		to zero and the display has not been dimmed by a kernel
+		power management event.
 
 	power:
-		power management mode, where 0 is "display on", and 1 to 3 will
-		dim the display backlight to brightness level 0 because
-		thinkpad-acpi cannot really turn the backlight off.  Kernel
-		power management events can temporarily increase the current
-		power management level, i.e. they can dim the display.
+		power management mode, where 0 is "display on", and 1 to 3
+		will dim the display backlight to brightness level 0
+		because thinkpad-acpi cannot really turn the backlight
+		off.  Kernel power management events can temporarily
+		increase the current power management level, i.e. they can
+		dim the display.
 
 
 Volume control -- /proc/acpi/ibm/volume

arch/x86/kernel/acpi/processor.c

View file

diff --git a/arch/x86/kernel/acpi/processor.c b/arch/x86/kernel/acpi/processor.c
index f63e5ff..a25db51 100644
--- a/arch/x86/kernel/acpi/processor.c
+++ b/arch/x86/kernel/acpi/processor.c
@@ -49,6 +49,9 @@ static void init_intel_pdc(struct acpi_processor *pr, struct cpuinfo_x86 *c)
 	if (cpu_has(c, X86_FEATURE_EST))
 		buf[2] |= ACPI_PDC_EST_CAPABILITY_SWSMP;
 
+	if (cpu_has(c, X86_FEATURE_ACPI))
+		buf[2] |= ACPI_PDC_T_FFH;
+
 	obj->type = ACPI_TYPE_BUFFER;
 	obj->buffer.length = 12;
 	obj->buffer.pointer = (u8 *) buf;

arch/x86/kernel/acpi/sleep_64.c

View file

diff --git a/arch/x86/kernel/acpi/sleep_64.c b/arch/x86/kernel/acpi/sleep_64.c
index 79475d2..da42de2 100644
--- a/arch/x86/kernel/acpi/sleep_64.c
+++ b/arch/x86/kernel/acpi/sleep_64.c
@@ -115,6 +115,3 @@ static int __init acpi_sleep_setup(char *str)
 
 __setup("acpi_sleep=", acpi_sleep_setup);
 
-void acpi_pci_link_exit(void)
-{
-}

arch/x86/kernel/io_apic_32.c

View file

diff --git a/arch/x86/kernel/io_apic_32.c b/arch/x86/kernel/io_apic_32.c
index f35c6eb..6bb80ea 100644
--- a/arch/x86/kernel/io_apic_32.c
+++ b/arch/x86/kernel/io_apic_32.c
@@ -962,7 +962,7 @@ static int EISA_ELCR(unsigned int irq)
 #define default_MCA_trigger(idx)	(1)
 #define default_MCA_polarity(idx)	(0)
 
-static int __init MPBIOS_polarity(int idx)
+static int MPBIOS_polarity(int idx)
 {
 	int bus = mp_irqs[idx].mpc_srcbus;
 	int polarity;
@@ -2830,6 +2830,25 @@ int io_apic_set_pci_routing (int ioapic, int pin, int irq, int edge_level, int a
 	return 0;
 }
 
+int acpi_get_override_irq(int bus_irq, int *trigger, int *polarity)
+{
+	int i;
+
+	if (skip_ioapic_setup)
+		return -1;
+
+	for (i = 0; i < mp_irq_entries; i++)
+		if (mp_irqs[i].mpc_irqtype == mp_INT &&
+		    mp_irqs[i].mpc_srcbusirq == bus_irq)
+			break;
+	if (i >= mp_irq_entries)
+		return -1;
+
+	*trigger = irq_trigger(i);
+	*polarity = irq_polarity(i);
+	return 0;
+}
+
 #endif /* CONFIG_ACPI */
 
 static int __init parse_disable_timer_pin_1(char *arg)

arch/x86/kernel/io_apic_64.c

View file

diff --git a/arch/x86/kernel/io_apic_64.c b/arch/x86/kernel/io_apic_64.c
index 953328b..435a8c9 100644
--- a/arch/x86/kernel/io_apic_64.c
+++ b/arch/x86/kernel/io_apic_64.c
@@ -546,7 +546,7 @@ int IO_APIC_get_PCI_irq_vector(int bus, int slot, int pin)
 #define default_PCI_trigger(idx)	(1)
 #define default_PCI_polarity(idx)	(1)
 
-static int __init MPBIOS_polarity(int idx)
+static int MPBIOS_polarity(int idx)
 {
 	int bus = mp_irqs[idx].mpc_srcbus;
 	int polarity;
@@ -2222,8 +2222,27 @@ int io_apic_set_pci_routing (int ioapic, int pin, int irq, int triggering, int p
 	return 0;
 }
 
-#endif /* CONFIG_ACPI */
 
+int acpi_get_override_irq(int bus_irq, int *trigger, int *polarity)
+{
+	int i;
+
+	if (skip_ioapic_setup)
+		return -1;
+
+	for (i = 0; i < mp_irq_entries; i++)
+		if (mp_irqs[i].mpc_irqtype == mp_INT &&
+		    mp_irqs[i].mpc_srcbusirq == bus_irq)
+			break;
+	if (i >= mp_irq_entries)
+		return -1;
+
+	*trigger = irq_trigger(i);
+	*polarity = irq_polarity(i);
+	return 0;
+}
+
+#endif /* CONFIG_ACPI */
 
 /*
  * This function currently is only a helper for the i386 smp boot process where
@@ -2260,3 +2279,4 @@ void __init setup_ioapic_dest(void)
 	}
 }
 #endif
+

arch/x86/pci/acpi.c

View file

diff --git a/arch/x86/pci/acpi.c b/arch/x86/pci/acpi.c
index 7e35078..0234f28 100644
--- a/arch/x86/pci/acpi.c
+++ b/arch/x86/pci/acpi.c
@@ -13,7 +13,7 @@ static int __devinit can_skip_ioresource_align(const struct dmi_system_id *d)
 	return 0;
 }
 
-static struct dmi_system_id acpi_pciprobe_dmi_table[] = {
+static struct dmi_system_id acpi_pciprobe_dmi_table[] __devinitdata = {
 /*
  * Systems where PCI IO resource ISA alignment can be skipped
  * when the ISA enable bit in the bridge control is not set

drivers/acpi/Kconfig

View file

diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig
index 087a702..b9f923e 100644
--- a/drivers/acpi/Kconfig
+++ b/drivers/acpi/Kconfig
@@ -50,7 +50,6 @@ config ACPI_SLEEP
 config ACPI_PROCFS
 	bool "Deprecated /proc/acpi files"
 	depends on PROC_FS
-	default y
 	---help---
 	  For backwards compatibility, this option allows
 	  deprecated /proc/acpi/ files to exist, even when
@@ -61,7 +60,6 @@ config ACPI_PROCFS
 	  /proc/acpi/info (/sys/modules/acpi/parameters/acpica_version)
 	  /proc/acpi/dsdt (/sys/firmware/acpi/tables/DSDT)
 	  /proc/acpi/fadt (/sys/firmware/acpi/tables/FACP)
-	  /proc/acpi/battery (/sys/class/power_supply)
 	  /proc/acpi/debug_layer (/sys/module/acpi/parameters/debug_layer)
 	  /proc/acpi/debug_level (/sys/module/acpi/parameters/debug_level)
 
@@ -69,7 +67,21 @@ config ACPI_PROCFS
 	  and functions which do not yet exist in /sys.
 
 	  Say N to delete /proc/acpi/ files that have moved to /sys/
-
+config ACPI_PROCFS_POWER
+	bool "Deprecated power /proc/acpi folders"
+	depends on PROC_FS
+	default y
+	---help---
+	  For backwards compatibility, this option allows
+          deprecated power /proc/acpi/ folders to exist, even when
+          they have been replaced by functions in /sys.
+          The deprecated folders (and their replacements) include:
+	  /proc/acpi/battery/* (/sys/class/power_supply/*)
+	  /proc/acpi/ac_adapter/* (sys/class/power_supply/*)
+	  This option has no effect on /proc/acpi/ folders
+	  and functions, which do not yet exist in /sys
+
+	  Say N to delete power /proc/acpi/ folders that have moved to /sys/
 config ACPI_PROC_EVENT
 	bool "Deprecated /proc/acpi/event support"
 	depends on PROC_FS

drivers/acpi/Makefile

View file

diff --git a/drivers/acpi/Makefile b/drivers/acpi/Makefile
index 54e3ab0..456446f 100644
--- a/drivers/acpi/Makefile
+++ b/drivers/acpi/Makefile
@@ -58,6 +58,6 @@ obj-$(CONFIG_ACPI_NUMA)		+= numa.o
 obj-$(CONFIG_ACPI_ASUS)		+= asus_acpi.o
 obj-$(CONFIG_ACPI_TOSHIBA)	+= toshiba_acpi.o
 obj-$(CONFIG_ACPI_HOTPLUG_MEMORY)	+= acpi_memhotplug.o
-obj-y				+= cm_sbs.o
+obj-$(CONFIG_ACPI_PROCFS_POWER)	+= cm_sbs.o
 obj-$(CONFIG_ACPI_SBS)		+= sbs.o
 obj-$(CONFIG_ACPI_SBS)		+= sbshc.o

drivers/acpi/ac.c

View file

diff --git a/drivers/acpi/ac.c b/drivers/acpi/ac.c
index 30238f6..76ed4f5 100644
--- a/drivers/acpi/ac.c
+++ b/drivers/acpi/ac.c
@@ -27,7 +27,7 @@
 #include <linux/module.h>
 #include <linux/init.h>
 #include <linux/types.h>
-#ifdef CONFIG_ACPI_PROCFS
+#ifdef CONFIG_ACPI_PROCFS_POWER
 #include <linux/proc_fs.h>
 #include <linux/seq_file.h>
 #endif
@@ -51,7 +51,7 @@ MODULE_AUTHOR("Paul Diefenbaugh");
 MODULE_DESCRIPTION("ACPI AC Adapter Driver");
 MODULE_LICENSE("GPL");
 
-#ifdef CONFIG_ACPI_PROCFS
+#ifdef CONFIG_ACPI_PROCFS_POWER
 extern struct proc_dir_entry *acpi_lock_ac_dir(void);
 extern void *acpi_unlock_ac_dir(struct proc_dir_entry *acpi_ac_dir);
 static int acpi_ac_open_fs(struct inode *inode, struct file *file);
@@ -86,7 +86,7 @@ struct acpi_ac {
 
 #define to_acpi_ac(x) container_of(x, struct acpi_ac, charger);
 
-#ifdef CONFIG_ACPI_PROCFS
+#ifdef CONFIG_ACPI_PROCFS_POWER
 static const struct file_operations acpi_ac_fops = {
 	.open = acpi_ac_open_fs,
 	.read = seq_read,
@@ -136,7 +136,7 @@ static int acpi_ac_get_state(struct acpi_ac *ac)
 	return 0;
 }
 
-#ifdef CONFIG_ACPI_PROCFS
+#ifdef CONFIG_ACPI_PROCFS_POWER
 /* --------------------------------------------------------------------------
                               FS Interface (/proc)
    -------------------------------------------------------------------------- */
@@ -275,7 +275,7 @@ static int acpi_ac_add(struct acpi_device *device)
 	if (result)
 		goto end;
 
-#ifdef CONFIG_ACPI_PROCFS
+#ifdef CONFIG_ACPI_PROCFS_POWER
 	result = acpi_ac_add_fs(device);
 #endif
 	if (result)
@@ -300,7 +300,7 @@ static int acpi_ac_add(struct acpi_device *device)
 
       end:
 	if (result) {
-#ifdef CONFIG_ACPI_PROCFS
+#ifdef CONFIG_ACPI_PROCFS_POWER
 		acpi_ac_remove_fs(device);
 #endif
 		kfree(ac);
@@ -339,7 +339,7 @@ static int acpi_ac_remove(struct acpi_device *device, int type)
 					    ACPI_ALL_NOTIFY, acpi_ac_notify);
 	if (ac->charger.dev)
 		power_supply_unregister(&ac->charger);
-#ifdef CONFIG_ACPI_PROCFS
+#ifdef CONFIG_ACPI_PROCFS_POWER
 	acpi_ac_remove_fs(device);
 #endif
 
@@ -355,7 +355,7 @@ static int __init acpi_ac_init(void)
 	if (acpi_disabled)
 		return -ENODEV;
 
-#ifdef CONFIG_ACPI_PROCFS
+#ifdef CONFIG_ACPI_PROCFS_POWER
 	acpi_ac_dir = acpi_lock_ac_dir();
 	if (!acpi_ac_dir)
 		return -ENODEV;
@@ -363,7 +363,7 @@ static int __init acpi_ac_init(void)
 
 	result = acpi_bus_register_driver(&acpi_ac_driver);
 	if (result < 0) {
-#ifdef CONFIG_ACPI_PROCFS
+#ifdef CONFIG_ACPI_PROCFS_POWER
 		acpi_unlock_ac_dir(acpi_ac_dir);
 #endif
 		return -ENODEV;
@@ -377,7 +377,7 @@ static void __exit acpi_ac_exit(void)
 
 	acpi_bus_unregister_driver(&acpi_ac_driver);
 
-#ifdef CONFIG_ACPI_PROCFS
+#ifdef CONFIG_ACPI_PROCFS_POWER
 	acpi_unlock_ac_dir(acpi_ac_dir);
 #endif
 

drivers/acpi/battery.c

View file

diff --git a/drivers/acpi/battery.c b/drivers/acpi/battery.c
index 192c244..7d6be23 100644
--- a/drivers/acpi/battery.c
+++ b/drivers/acpi/battery.c
@@ -31,7 +31,7 @@
 #include <linux/types.h>
 #include <linux/jiffies.h>
 
-#ifdef CONFIG_ACPI_PROCFS
+#ifdef CONFIG_ACPI_PROCFS_POWER
 #include <linux/proc_fs.h>
 #include <linux/seq_file.h>
 #include <asm/uaccess.h>
@@ -63,7 +63,7 @@ static unsigned int cache_time = 1000;
 module_param(cache_time, uint, 0644);
 MODULE_PARM_DESC(cache_time, "cache time in milliseconds");
 
-#ifdef CONFIG_ACPI_PROCFS
+#ifdef CONFIG_ACPI_PROCFS_POWER
 extern struct proc_dir_entry *acpi_lock_battery_dir(void);
 extern void *acpi_unlock_battery_dir(struct proc_dir_entry *acpi_battery_dir);
 
@@ -153,6 +153,8 @@ static int acpi_battery_get_property(struct power_supply *psy,
 			val->intval = POWER_SUPPLY_STATUS_CHARGING;
 		else if (battery->state == 0)
 			val->intval = POWER_SUPPLY_STATUS_FULL;
+		else
+			val->intval = POWER_SUPPLY_STATUS_UNKNOWN;
 		break;
 	case POWER_SUPPLY_PROP_PRESENT:
 		val->intval = acpi_battery_present(battery);
@@ -221,7 +223,7 @@ static enum power_supply_property energy_battery_props[] = {
 	POWER_SUPPLY_PROP_MANUFACTURER,
 };
 
-#ifdef CONFIG_ACPI_PROCFS
+#ifdef CONFIG_ACPI_PROCFS_POWER
 inline char *acpi_battery_units(struct acpi_battery *battery)
 {
 	return (battery->power_unit)?"mA":"mW";
@@ -479,7 +481,7 @@ static int acpi_battery_update(struct acpi_battery *battery)
                               FS Interface (/proc)
    -------------------------------------------------------------------------- */
 
-#ifdef CONFIG_ACPI_PROCFS
+#ifdef CONFIG_ACPI_PROCFS_POWER
 static struct proc_dir_entry *acpi_battery_dir;
 
 static int acpi_battery_print_info(struct seq_file *seq, int result)
@@ -786,7 +788,7 @@ static int acpi_battery_add(struct acpi_device *device)
 	acpi_driver_data(device) = battery;
 	mutex_init(&battery->lock);
 	acpi_battery_update(battery);
-#ifdef CONFIG_ACPI_PROCFS
+#ifdef CONFIG_ACPI_PROCFS_POWER
 	result = acpi_battery_add_fs(device);
 	if (result)
 		goto end;
@@ -804,7 +806,7 @@ static int acpi_battery_add(struct acpi_device *device)
 	       device->status.battery_present ? "present" : "absent");
       end:
 	if (result) {
-#ifdef CONFIG_ACPI_PROCFS
+#ifdef CONFIG_ACPI_PROCFS_POWER
 		acpi_battery_remove_fs(device);
 #endif
 		kfree(battery);
@@ -823,7 +825,7 @@ static int acpi_battery_remove(struct acpi_device *device, int type)
 	status = acpi_remove_notify_handler(device->handle,
 					    ACPI_ALL_NOTIFY,
 					    acpi_battery_notify);
-#ifdef CONFIG_ACPI_PROCFS
+#ifdef CONFIG_ACPI_PROCFS_POWER
 	acpi_battery_remove_fs(device);
 #endif
 	sysfs_remove_battery(battery);
@@ -859,13 +861,13 @@ static int __init acpi_battery_init(void)
 {
 	if (acpi_disabled)
 		return -ENODEV;
-#ifdef CONFIG_ACPI_PROCFS
+#ifdef CONFIG_ACPI_PROCFS_POWER
 	acpi_battery_dir = acpi_lock_battery_dir();
 	if (!acpi_battery_dir)
 		return -ENODEV;
 #endif
 	if (acpi_bus_register_driver(&acpi_battery_driver) < 0) {
-#ifdef CONFIG_ACPI_PROCFS
+#ifdef CONFIG_ACPI_PROCFS_POWER
 		acpi_unlock_battery_dir(acpi_battery_dir);
 #endif
 		return -ENODEV;
@@ -876,7 +878,7 @@ static int __init acpi_battery_init(void)
 static void __exit acpi_battery_exit(void)
 {
 	acpi_bus_unregister_driver(&acpi_battery_driver);
-#ifdef CONFIG_ACPI_PROCFS
+#ifdef CONFIG_ACPI_PROCFS_POWER
 	acpi_unlock_battery_dir(acpi_battery_dir);
 #endif
 }

drivers/acpi/ec.c

View file

diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c
index 06b78e5..d411017 100644
--- a/drivers/acpi/ec.c
+++ b/drivers/acpi/ec.c
@@ -47,6 +47,9 @@
 #undef PREFIX
 #define PREFIX				"ACPI: EC: "
 
+/* Uncomment next line to get verbose print outs*/
+/* #define DEBUG */
+
 /* EC status register */
 #define ACPI_EC_FLAG_OBF	0x01	/* Output buffer full */
 #define ACPI_EC_FLAG_IBF	0x02	/* Input buffer full */
@@ -75,7 +78,10 @@ enum {
 	EC_FLAGS_WAIT_GPE = 0,		/* Don't check status until GPE arrives */
 	EC_FLAGS_QUERY_PENDING,		/* Query is pending */
 	EC_FLAGS_GPE_MODE,		/* Expect GPE to be sent for status change */
-	EC_FLAGS_ONLY_IBF_GPE,		/* Expect GPE only for IBF = 0 event */
+	EC_FLAGS_NO_ADDRESS_GPE,	/* Expect GPE only for non-address event */
+	EC_FLAGS_ADDRESS,		/* Address is being written */
+	EC_FLAGS_NO_WDATA_GPE,		/* Don't expect WDATA GPE event */
+	EC_FLAGS_WDATA,			/* Data is being written */
 };
 
 static int acpi_ec_remove(struct acpi_device *device, int type);
@@ -131,21 +137,27 @@ static struct acpi_ec {
 
 static inline u8 acpi_ec_read_status(struct acpi_ec *ec)
 {
-	return inb(ec->command_addr);
+	u8 x = inb(ec->command_addr);
+	pr_debug(PREFIX "---> status = 0x%2x\n", x);
+	return x;
 }
 
 static inline u8 acpi_ec_read_data(struct acpi_ec *ec)
 {
+	u8 x = inb(ec->data_addr);
+	pr_debug(PREFIX "---> data = 0x%2x\n", x);
 	return inb(ec->data_addr);
 }
 
 static inline void acpi_ec_write_cmd(struct acpi_ec *ec, u8 command)
 {
+	pr_debug(PREFIX "<--- command = 0x%2x\n", command);
 	outb(command, ec->command_addr);
 }
 
 static inline void acpi_ec_write_data(struct acpi_ec *ec, u8 data)
 {
+	pr_debug(PREFIX "<--- data = 0x%2x\n", data);
 	outb(data, ec->data_addr);
 }
 
@@ -166,38 +178,54 @@ static inline int acpi_ec_check_status(struct acpi_ec *ec, enum ec_event event)
 
 static int acpi_ec_wait(struct acpi_ec *ec, enum ec_event event, int force_poll)
 {
+	int ret = 0;
+	if (unlikely(test_bit(EC_FLAGS_ADDRESS, &ec->flags) &&
+		     test_bit(EC_FLAGS_NO_ADDRESS_GPE, &ec->flags)))
+		force_poll = 1;
+	if (unlikely(test_bit(EC_FLAGS_WDATA, &ec->flags) &&
+		     test_bit(EC_FLAGS_NO_WDATA_GPE, &ec->flags)))
+		force_poll = 1;
 	if (likely(test_bit(EC_FLAGS_GPE_MODE, &ec->flags)) &&
 	    likely(!force_poll)) {
 		if (wait_event_timeout(ec->wait, acpi_ec_check_status(ec, event),
 				       msecs_to_jiffies(ACPI_EC_DELAY)))
-			return 0;
+			goto end;
 		clear_bit(EC_FLAGS_WAIT_GPE, &ec->flags);
 		if (acpi_ec_check_status(ec, event)) {
-			if (event == ACPI_EC_EVENT_OBF_1) {
-				/* miss OBF = 1 GPE, don't expect it anymore */
-				printk(KERN_INFO PREFIX "missing OBF_1 confirmation,"
-					"switching to degraded mode.\n");
-				set_bit(EC_FLAGS_ONLY_IBF_GPE, &ec->flags);
+			if (test_bit(EC_FLAGS_ADDRESS, &ec->flags)) {
+				/* miss address GPE, don't expect it anymore */
+				pr_info(PREFIX "missing address confirmation, "
+					"don't expect it any longer.\n");
+				set_bit(EC_FLAGS_NO_ADDRESS_GPE, &ec->flags);
+			} else if (test_bit(EC_FLAGS_WDATA, &ec->flags)) {
+				/* miss write data GPE, don't expect it */
+				pr_info(PREFIX "missing write data confirmation, "
+					"don't expect it any longer.\n");
+				set_bit(EC_FLAGS_NO_WDATA_GPE, &ec->flags);
 			} else {
 				/* missing GPEs, switch back to poll mode */
-				printk(KERN_INFO PREFIX "missing IBF_1 confirmations,"
-					"switch off interrupt mode.\n");
+				if (printk_ratelimit())
+					pr_info(PREFIX "missing confirmations, "
+						"switch off interrupt mode.\n");
 				clear_bit(EC_FLAGS_GPE_MODE, &ec->flags);
 			}
-			return 0;
+			goto end;
 		}
 	} else {
 		unsigned long delay = jiffies + msecs_to_jiffies(ACPI_EC_DELAY);
 		clear_bit(EC_FLAGS_WAIT_GPE, &ec->flags);
 		while (time_before(jiffies, delay)) {
 			if (acpi_ec_check_status(ec, event))
-				return 0;
+				goto end;
 		}
 	}
-	printk(KERN_ERR PREFIX "acpi_ec_wait timeout,"
+	pr_err(PREFIX "acpi_ec_wait timeout,"
 			       " status = %d, expect_event = %d\n",
 			       acpi_ec_read_status(ec), event);
-	return -ETIME;
+	ret = -ETIME;
+      end:
+	clear_bit(EC_FLAGS_ADDRESS, &ec->flags);
+	return ret;