Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6

8 files changed, 71 insertions, 108 deletions

diff --git a/drivers/acpi/acpica/hwvalid.c b/drivers/acpi/acpica/hwvalid.c
index bd3c937b0ac..7737afb157c 100644
--- a/drivers/acpi/acpica/hwvalid.c
+++ b/drivers/acpi/acpica/hwvalid.c
@@ -90,7 +90,6 @@ static const struct acpi_port_info acpi_protected_ports[] = {
 	{"PIT2", 0x0048, 0x004B, ACPI_OSI_WIN_XP},
 	{"RTC", 0x0070, 0x0071, ACPI_OSI_WIN_XP},
 	{"CMOS", 0x0074, 0x0076, ACPI_OSI_WIN_XP},
-	{"DMA1", 0x0081, 0x0083, ACPI_OSI_WIN_XP},
 	{"DMA1L", 0x0087, 0x0087, ACPI_OSI_WIN_XP},
 	{"DMA2", 0x0089, 0x008B, ACPI_OSI_WIN_XP},
 	{"DMA2L", 0x008F, 0x008F, ACPI_OSI_WIN_XP},
diff --git a/drivers/acpi/proc.c b/drivers/acpi/proc.c
index 05dfdc96802..d0d550d22a6 100644
--- a/drivers/acpi/proc.c
+++ b/drivers/acpi/proc.c
@@ -343,9 +343,6 @@ acpi_system_write_alarm(struct file *file,
 }
 #endif				/* HAVE_ACPI_LEGACY_ALARM */
 
-extern struct list_head acpi_wakeup_device_list;
-extern spinlock_t acpi_device_lock;
-
 static int
 acpi_system_wakeup_device_seq_show(struct seq_file *seq, void *offset)
 {
@@ -353,7 +350,7 @@ acpi_system_wakeup_device_seq_show(struct seq_file *seq, void *offset)
 
 	seq_printf(seq, "Device\tS-state\t  Status   Sysfs node\n");
 
-	spin_lock(&acpi_device_lock);
+	mutex_lock(&acpi_device_lock);
 	list_for_each_safe(node, next, &acpi_wakeup_device_list) {
 		struct acpi_device *dev =
 		    container_of(node, struct acpi_device, wakeup_list);
@@ -361,7 +358,6 @@ acpi_system_wakeup_device_seq_show(struct seq_file *seq, void *offset)
 
 		if (!dev->wakeup.flags.valid)
 			continue;
-		spin_unlock(&acpi_device_lock);
 
 		ldev = acpi_get_physical_device(dev->handle);
 		seq_printf(seq, "%s\t  S%d\t%c%-8s  ",
@@ -376,9 +372,8 @@ acpi_system_wakeup_device_seq_show(struct seq_file *seq, void *offset)
 		seq_printf(seq, "\n");
 		put_device(ldev);
 
-		spin_lock(&acpi_device_lock);
 	}
-	spin_unlock(&acpi_device_lock);
+	mutex_unlock(&acpi_device_lock);
 	return 0;
 }
 
@@ -409,7 +404,7 @@ acpi_system_write_wakeup_device(struct file *file,
 	strbuf[len] = '\0';
 	sscanf(strbuf, "%s", str);
 
-	spin_lock(&acpi_device_lock);
+	mutex_lock(&acpi_device_lock);
 	list_for_each_safe(node, next, &acpi_wakeup_device_list) {
 		struct acpi_device *dev =
 		    container_of(node, struct acpi_device, wakeup_list);
@@ -446,7 +441,7 @@ acpi_system_write_wakeup_device(struct file *file,
 			}
 		}
 	}
-	spin_unlock(&acpi_device_lock);
+	mutex_unlock(&acpi_device_lock);
 	return count;
 }
 
diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c
index 4e6e758bd39..6fe121434ff 100644
--- a/drivers/acpi/processor_idle.c
+++ b/drivers/acpi/processor_idle.c
@@ -145,6 +145,9 @@ static void acpi_timer_check_state(int state, struct acpi_processor *pr,
 	struct acpi_processor_power *pwr = &pr->power;
 	u8 type = local_apic_timer_c2_ok ? ACPI_STATE_C3 : ACPI_STATE_C2;
 
+	if (cpu_has(&cpu_data(pr->id), X86_FEATURE_ARAT))
+		return;
+
 	/*
 	 * Check, if one of the previous states already marked the lapic
 	 * unstable
diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c
index 20c23c04920..8ff510b91d8 100644
--- a/drivers/acpi/scan.c
+++ b/drivers/acpi/scan.c
@@ -24,7 +24,7 @@ extern struct acpi_device *acpi_root;
 
 static LIST_HEAD(acpi_device_list);
 static LIST_HEAD(acpi_bus_id_list);
-DEFINE_SPINLOCK(acpi_device_lock);
+DEFINE_MUTEX(acpi_device_lock);
 LIST_HEAD(acpi_wakeup_device_list);
 
 struct acpi_device_bus_id{
@@ -491,7 +491,6 @@ static int acpi_device_register(struct acpi_device *device,
 	 */
 	INIT_LIST_HEAD(&device->children);
 	INIT_LIST_HEAD(&device->node);
-	INIT_LIST_HEAD(&device->g_list);
 	INIT_LIST_HEAD(&device->wakeup_list);
 
 	new_bus_id = kzalloc(sizeof(struct acpi_device_bus_id), GFP_KERNEL);
@@ -500,7 +499,7 @@ static int acpi_device_register(struct acpi_device *device,
 		return -ENOMEM;
 	}
 
-	spin_lock(&acpi_device_lock);
+	mutex_lock(&acpi_device_lock);
 	/*
 	 * Find suitable bus_id and instance number in acpi_bus_id_list
 	 * If failed, create one and link it into acpi_bus_id_list
@@ -521,14 +520,12 @@ static int acpi_device_register(struct acpi_device *device,
 	}
 	dev_set_name(&device->dev, "%s:%02x", acpi_device_bus_id->bus_id, acpi_device_bus_id->instance_no);
 
-	if (device->parent) {
+	if (device->parent)
 		list_add_tail(&device->node, &device->parent->children);
-		list_add_tail(&device->g_list, &device->parent->g_list);
-	} else
-		list_add_tail(&device->g_list, &acpi_device_list);
+
 	if (device->wakeup.flags.valid)
 		list_add_tail(&device->wakeup_list, &acpi_wakeup_device_list);
-	spin_unlock(&acpi_device_lock);
+	mutex_unlock(&acpi_device_lock);
 
 	if (device->parent)
 		device->dev.parent = &parent->dev;
@@ -549,28 +546,22 @@ static int acpi_device_register(struct acpi_device *device,
 	device->removal_type = ACPI_BUS_REMOVAL_NORMAL;
 	return 0;
   end:
-	spin_lock(&acpi_device_lock);
-	if (device->parent) {
+	mutex_lock(&acpi_device_lock);
+	if (device->parent)
 		list_del(&device->node);
-		list_del(&device->g_list);
-	} else
-		list_del(&device->g_list);
 	list_del(&device->wakeup_list);
-	spin_unlock(&acpi_device_lock);
+	mutex_unlock(&acpi_device_lock);
 	return result;
 }
 
 static void acpi_device_unregister(struct acpi_device *device, int type)
 {
-	spin_lock(&acpi_device_lock);
-	if (device->parent) {
+	mutex_lock(&acpi_device_lock);
+	if (device->parent)
 		list_del(&device->node);
-		list_del(&device->g_list);
-	} else
-		list_del(&device->g_list);
 
 	list_del(&device->wakeup_list);
-	spin_unlock(&acpi_device_lock);
+	mutex_unlock(&acpi_device_lock);
 
 	acpi_detach_data(device->handle, acpi_bus_data_handler);
 
diff --git a/drivers/acpi/sleep.h b/drivers/acpi/sleep.h
index cfaf8f5b0a1..8a8f3b3382a 100644
--- a/drivers/acpi/sleep.h
+++ b/drivers/acpi/sleep.h
@@ -5,3 +5,6 @@ extern int acpi_suspend (u32 state);
 extern void acpi_enable_wakeup_device_prep(u8 sleep_state);
 extern void acpi_enable_wakeup_device(u8 sleep_state);
 extern void acpi_disable_wakeup_device(u8 sleep_state);
+
+extern struct list_head acpi_wakeup_device_list;
+extern struct mutex acpi_device_lock;
diff --git a/drivers/acpi/thermal.c b/drivers/acpi/thermal.c
index e8c143caf0f..9cd15e8c893 100644
--- a/drivers/acpi/thermal.c
+++ b/drivers/acpi/thermal.c
@@ -98,6 +98,7 @@ MODULE_PARM_DESC(psv, "Disable or override all passive trip points.");
 static int acpi_thermal_add(struct acpi_device *device);
 static int acpi_thermal_remove(struct acpi_device *device, int type);
 static int acpi_thermal_resume(struct acpi_device *device);
+static void acpi_thermal_notify(struct acpi_device *device, u32 event);
 static int acpi_thermal_state_open_fs(struct inode *inode, struct file *file);
 static int acpi_thermal_temp_open_fs(struct inode *inode, struct file *file);
 static int acpi_thermal_trip_open_fs(struct inode *inode, struct file *file);
@@ -123,6 +124,7 @@ static struct acpi_driver acpi_thermal_driver = {
 		.add = acpi_thermal_add,
 		.remove = acpi_thermal_remove,
 		.resume = acpi_thermal_resume,
+		.notify = acpi_thermal_notify,
 		},
 };
 
@@ -192,6 +194,7 @@ struct acpi_thermal {
 	struct acpi_handle_list devices;
 	struct thermal_zone_device *thermal_zone;
 	int tz_enabled;
+	int kelvin_offset;
 	struct mutex lock;
 };
 
@@ -581,7 +584,7 @@ static void acpi_thermal_check(void *data)
 }
 
 /* sys I/F for generic thermal sysfs support */
-#define KELVIN_TO_MILLICELSIUS(t) (t * 100 - 273200)
+#define KELVIN_TO_MILLICELSIUS(t, off) (((t) - (off)) * 100)
 
 static int thermal_get_temp(struct thermal_zone_device *thermal,
 			    unsigned long *temp)
@@ -596,7 +599,7 @@ static int thermal_get_temp(struct thermal_zone_device *thermal,
 	if (result)
 		return result;
 
-	*temp = KELVIN_TO_MILLICELSIUS(tz->temperature);
+	*temp = KELVIN_TO_MILLICELSIUS(tz->temperature, tz->kelvin_offset);
 	return 0;
 }
 
@@ -702,7 +705,8 @@ static int thermal_get_trip_temp(struct thermal_zone_device *thermal,
 	if (tz->trips.critical.flags.valid) {
 		if (!trip) {
 			*temp = KELVIN_TO_MILLICELSIUS(
-				tz->trips.critical.temperature);
+				tz->trips.critical.temperature,
+				tz->kelvin_offset);
 			return 0;
 		}
 		trip--;
@@ -711,7 +715,8 @@ static int thermal_get_trip_temp(struct thermal_zone_device *thermal,
 	if (tz->trips.hot.flags.valid) {
 		if (!trip) {
 			*temp = KELVIN_TO_MILLICELSIUS(
-				tz->trips.hot.temperature);
+				tz->trips.hot.temperature,
+				tz->kelvin_offset);
 			return 0;
 		}
 		trip--;
@@ -720,7 +725,8 @@ static int thermal_get_trip_temp(struct thermal_zone_device *thermal,
 	if (tz->trips.passive.flags.valid) {
 		if (!trip) {
 			*temp = KELVIN_TO_MILLICELSIUS(
-				tz->trips.passive.temperature);
+				tz->trips.passive.temperature,
+				tz->kelvin_offset);
 			return 0;
 		}
 		trip--;
@@ -730,7 +736,8 @@ static int thermal_get_trip_temp(struct thermal_zone_device *thermal,
 		tz->trips.active[i].flags.valid; i++) {
 		if (!trip) {
 			*temp = KELVIN_TO_MILLICELSIUS(
-				tz->trips.active[i].temperature);
+				tz->trips.active[i].temperature,
+				tz->kelvin_offset);
 			return 0;
 		}
 		trip--;
@@ -745,7 +752,8 @@ static int thermal_get_crit_temp(struct thermal_zone_device *thermal,
 
 	if (tz->trips.critical.flags.valid) {
 		*temperature = KELVIN_TO_MILLICELSIUS(
-				tz->trips.critical.temperature);
+				tz->trips.critical.temperature,
+				tz->kelvin_offset);
 		return 0;
 	} else
 		return -EINVAL;
@@ -1264,17 +1272,14 @@ static int acpi_thermal_remove_fs(struct acpi_device *device)
                                  Driver Interface
    -------------------------------------------------------------------------- */
 
-static void acpi_thermal_notify(acpi_handle handle, u32 event, void *data)
+static void acpi_thermal_notify(struct acpi_device *device, u32 event)
 {
-	struct acpi_thermal *tz = data;
-	struct acpi_device *device = NULL;
+	struct acpi_thermal *tz = acpi_driver_data(device);
 
 
 	if (!tz)
 		return;
 
-	device = tz->device;
-
 	switch (event) {
 	case ACPI_THERMAL_NOTIFY_TEMPERATURE:
 		acpi_thermal_check(tz);
@@ -1298,8 +1303,6 @@ static void acpi_thermal_notify(acpi_handle handle, u32 event, void *data)
 				  "Unsupported event [0x%x]\n", event));
 		break;
 	}
-
-	return;
 }
 
 static int acpi_thermal_get_info(struct acpi_thermal *tz)
@@ -1334,10 +1337,28 @@ static int acpi_thermal_get_info(struct acpi_thermal *tz)
 	return 0;
 }
 
+/*
+ * The exact offset between Kelvin and degree Celsius is 273.15. However ACPI
+ * handles temperature values with a single decimal place. As a consequence,
+ * some implementations use an offset of 273.1 and others use an offset of
+ * 273.2. Try to find out which one is being used, to present the most
+ * accurate and visually appealing number.
+ *
+ * The heuristic below should work for all ACPI thermal zones which have a
+ * critical trip point with a value being a multiple of 0.5 degree Celsius.
+ */
+static void acpi_thermal_guess_offset(struct acpi_thermal *tz)
+{
+	if (tz->trips.critical.flags.valid &&
+	    (tz->trips.critical.temperature % 5) == 1)
+		tz->kelvin_offset = 2731;
+	else
+		tz->kelvin_offset = 2732;
+}
+
 static int acpi_thermal_add(struct acpi_device *device)
 {
 	int result = 0;
-	acpi_status status = AE_OK;
 	struct acpi_thermal *tz = NULL;
 
 
@@ -1360,6 +1381,8 @@ static int acpi_thermal_add(struct acpi_device *device)
 	if (result)
 		goto free_memory;
 
+	acpi_thermal_guess_offset(tz);
+
 	result = acpi_thermal_register_thermal_zone(tz);
 	if (result)
 		goto free_memory;
@@ -1368,21 +1391,11 @@ static int acpi_thermal_add(struct acpi_device *device)
 	if (result)
 		goto unregister_thermal_zone;
 
-	status = acpi_install_notify_handler(device->handle,
-					     ACPI_DEVICE_NOTIFY,
-					     acpi_thermal_notify, tz);
-	if (ACPI_FAILURE(status)) {
-		result = -ENODEV;
-		goto remove_fs;
-	}
-
 	printk(KERN_INFO PREFIX "%s [%s] (%ld C)\n",
 	       acpi_device_name(device), acpi_device_bid(device),
 	       KELVIN_TO_CELSIUS(tz->temperature));
 	goto end;
 
-remove_fs:
-	acpi_thermal_remove_fs(device);
 unregister_thermal_zone:
 	thermal_zone_device_unregister(tz->thermal_zone);
 free_memory:
@@ -1393,7 +1406,6 @@ end:
 
 static int acpi_thermal_remove(struct acpi_device *device, int type)
 {
-	acpi_status status = AE_OK;
 	struct acpi_thermal *tz = NULL;
 
 	if (!device || !acpi_driver_data(device))
@@ -1401,10 +1413,6 @@ static int acpi_thermal_remove(struct acpi_device *device, int type)
 
 	tz = acpi_driver_data(device);
 
-	status = acpi_remove_notify_handler(device->handle,
-					    ACPI_DEVICE_NOTIFY,
-					    acpi_thermal_notify);
-
 	acpi_thermal_remove_fs(device);
 	acpi_thermal_unregister_thermal_zone(tz);
 	mutex_destroy(&tz->lock);
diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c
index ab06143672b..cd4fb7543a9 100644
--- a/drivers/acpi/video.c
+++ b/drivers/acpi/video.c
@@ -79,6 +79,7 @@ module_param(brightness_switch_enabled, bool, 0644);
 static int acpi_video_bus_add(struct acpi_device *device);
 static int acpi_video_bus_remove(struct acpi_device *device, int type);
 static int acpi_video_resume(struct acpi_device *device);
+static void acpi_video_bus_notify(struct acpi_device *device, u32 event);
 
 static const struct acpi_device_id video_device_ids[] = {
 	{ACPI_VIDEO_HID, 0},
@@ -94,6 +95,7 @@ static struct acpi_driver acpi_video_bus = {
 		.add = acpi_video_bus_add,
 		.remove = acpi_video_bus_remove,
 		.resume = acpi_video_resume,
+		.notify = acpi_video_bus_notify,
 		},
 };
 
@@ -1986,17 +1988,15 @@ static int acpi_video_bus_stop_devices(struct acpi_video_bus *video)
 	return acpi_video_bus_DOS(video, 0, 1);
 }
 
-static void acpi_video_bus_notify(acpi_handle handle, u32 event, void *data)
+static void acpi_video_bus_notify(struct acpi_device *device, u32 event)
 {
-	struct acpi_video_bus *video = data;
-	struct acpi_device *device = NULL;
+	struct acpi_video_bus *video = acpi_driver_data(device);
 	struct input_dev *input;
 	int keycode;
 
 	if (!video)
 		return;
 
-	device = video->device;
 	input = video->input;
 
 	switch (event) {
@@ -2127,7 +2127,6 @@ static int acpi_video_resume(struct acpi_device *device)
 
 static int acpi_video_bus_add(struct acpi_device *device)
 {
-	acpi_status status;
 	struct acpi_video_bus *video;
 	struct input_dev *input;
 	int error;
@@ -2169,20 +2168,10 @@ static int acpi_video_bus_add(struct acpi_device *device)
 	acpi_video_bus_get_devices(video, device);
 	acpi_video_bus_start_devices(video);
 
-	status = acpi_install_notify_handler(device->handle,
-					     ACPI_DEVICE_NOTIFY,
-					     acpi_video_bus_notify, video);
-	if (ACPI_FAILURE(status)) {
-		printk(KERN_ERR PREFIX
-				  "Error installing notify handler\n");
-		error = -ENODEV;
-		goto err_stop_video;
-	}
-
 	video->input = input = input_allocate_device();
 	if (!input) {
 		error = -ENOMEM;
-		goto err_uninstall_notify;
+		goto err_stop_video;
 	}
 
 	snprintf(video->phys, sizeof(video->phys),
@@ -2218,9 +2207,6 @@ static int acpi_video_bus_add(struct acpi_device *device)
 
  err_free_input_dev:
 	input_free_device(input);
- err_uninstall_notify:
-	acpi_remove_notify_handler(device->handle, ACPI_DEVICE_NOTIFY,
-				   acpi_video_bus_notify);
  err_stop_video:
 	acpi_video_bus_stop_devices(video);
 	acpi_video_bus_put_devices(video);
@@ -2235,7 +2221,6 @@ static int acpi_video_bus_add(struct acpi_device *device)
 
 static int acpi_video_bus_remove(struct acpi_device *device, int type)
 {
-	acpi_status status = 0;
 	struct acpi_video_bus *video = NULL;
 
 
@@ -2245,11 +2230,6 @@ static int acpi_video_bus_remove(struct acpi_device *device, int type)
 	video = acpi_driver_data(device);
 
 	acpi_video_bus_stop_devices(video);
-
-	status = acpi_remove_notify_handler(video->device->handle,
-					    ACPI_DEVICE_NOTIFY,
-					    acpi_video_bus_notify);
-
 	acpi_video_bus_put_devices(video);
 	acpi_video_bus_remove_fs(device);
 
diff --git a/drivers/acpi/wakeup.c b/drivers/acpi/wakeup.c
index 5aee8c26cc9..88725dcdf8b 100644
--- a/drivers/acpi/wakeup.c
+++ b/drivers/acpi/wakeup.c
@@ -12,12 +12,14 @@
 #include "internal.h"
 #include "sleep.h"
 
+/*
+ * We didn't lock acpi_device_lock in the file, because it invokes oops in
+ * suspend/resume and isn't really required as this is called in S-state. At
+ * that time, there is no device hotplug
+ **/
 #define _COMPONENT		ACPI_SYSTEM_COMPONENT
 ACPI_MODULE_NAME("wakeup_devices")
 
-extern struct list_head acpi_wakeup_device_list;
-extern spinlock_t acpi_device_lock;
-
 /**
  * acpi_enable_wakeup_device_prep - prepare wakeup devices
  *	@sleep_state:	ACPI state
@@ -29,7 +31,6 @@ void acpi_enable_wakeup_device_prep(u8 sleep_state)
 {
 	struct list_head *node, *next;
 
-	spin_lock(&acpi_device_lock);
 	list_for_each_safe(node, next, &acpi_wakeup_device_list) {
 		struct acpi_device *dev = container_of(node,
 						       struct acpi_device,
@@ -40,11 +41,8 @@ void acpi_enable_wakeup_device_prep(u8 sleep_state)
 		    (sleep_state > (u32) dev->wakeup.sleep_state))
 			continue;
 
-		spin_unlock(&acpi_device_lock);
 		acpi_enable_wakeup_device_power(dev, sleep_state);
-		spin_lock(&acpi_device_lock);
 	}
-	spin_unlock(&acpi_device_lock);
 }
 
 /**
@@ -60,7 +58,6 @@ void acpi_enable_wakeup_device(u8 sleep_state)
 	 * Caution: this routine must be invoked when interrupt is disabled 
 	 * Refer ACPI2.0: P212
 	 */
-	spin_lock(&acpi_device_lock);
 	list_for_each_safe(node, next, &acpi_wakeup_device_list) {
 		struct acpi_device *dev =
 			container_of(node, struct acpi_device, wakeup_list);
@@ -74,22 +71,17 @@ void acpi_enable_wakeup_device(u8 sleep_state)
 		if ((!dev->wakeup.state.enabled && !dev->wakeup.flags.prepared)
 		    || sleep_state > (u32) dev->wakeup.sleep_state) {
 			if (dev->wakeup.flags.run_wake) {
-				spin_unlock(&acpi_device_lock);
 				/* set_gpe_type will disable GPE, leave it like that */
 				acpi_set_gpe_type(dev->wakeup.gpe_device,
 						  dev->wakeup.gpe_number,
 						  ACPI_GPE_TYPE_RUNTIME);
-				spin_lock(&acpi_device_lock);
 			}
 			continue;
 		}
-		spin_unlock(&acpi_device_lock);
 		if (!dev->wakeup.flags.run_wake)
 			acpi_enable_gpe(dev->wakeup.gpe_device,
 					dev->wakeup.gpe_number);
-		spin_lock(&acpi_device_lock);
 	}
-	spin_unlock(&acpi_device_lock);
 }
 
 /**
@@ -101,7 +93,6 @@ void acpi_disable_wakeup_device(u8 sleep_state)
 {
 	struct list_head *node, *next;
 
-	spin_lock(&acpi_device_lock);
 	list_for_each_safe(node, next, &acpi_wakeup_device_list) {
 		struct acpi_device *dev =
 			container_of(node, struct acpi_device, wakeup_list);
@@ -112,19 +103,16 @@ void acpi_disable_wakeup_device(u8 sleep_state)
 		if ((!dev->wakeup.state.enabled && !dev->wakeup.flags.prepared)
 		    || sleep_state > (u32) dev->wakeup.sleep_state) {
 			if (dev->wakeup.flags.run_wake) {
-				spin_unlock(&acpi_device_lock);
 				acpi_set_gpe_type(dev->wakeup.gpe_device,
 						  dev->wakeup.gpe_number,
 						  ACPI_GPE_TYPE_WAKE_RUN);
 				/* Re-enable it, since set_gpe_type will disable it */
 				acpi_enable_gpe(dev->wakeup.gpe_device,
 						dev->wakeup.gpe_number);
-				spin_lock(&acpi_device_lock);
 			}
 			continue;
 		}
 
-		spin_unlock(&acpi_device_lock);
 		acpi_disable_wakeup_device_power(dev);
 		/* Never disable run-wake GPE */
 		if (!dev->wakeup.flags.run_wake) {
@@ -133,16 +121,14 @@ void acpi_disable_wakeup_device(u8 sleep_state)
 			acpi_clear_gpe(dev->wakeup.gpe_device,
 				       dev->wakeup.gpe_number, ACPI_NOT_ISR);
 		}
-		spin_lock(&acpi_device_lock);
 	}
-	spin_unlock(&acpi_device_lock);
 }
 
 int __init acpi_wakeup_device_init(void)
 {
 	struct list_head *node, *next;
 
-	spin_lock(&acpi_device_lock);
+	mutex_lock(&acpi_device_lock);
 	list_for_each_safe(node, next, &acpi_wakeup_device_list) {
 		struct acpi_device *dev = container_of(node,
 						       struct acpi_device,
@@ -150,15 +136,13 @@ int __init acpi_wakeup_device_init(void)
 		/* In case user doesn't load button driver */
 		if (!dev->wakeup.flags.run_wake || dev->wakeup.state.enabled)
 			continue;
-		spin_unlock(&acpi_device_lock);
 		acpi_set_gpe_type(dev->wakeup.gpe_device,
 				  dev->wakeup.gpe_number,
 				  ACPI_GPE_TYPE_WAKE_RUN);
 		acpi_enable_gpe(dev->wakeup.gpe_device,
 				dev->wakeup.gpe_number);
 		dev->wakeup.state.enabled = 1;
-		spin_lock(&acpi_device_lock);
 	}
-	spin_unlock(&acpi_device_lock);
+	mutex_unlock(&acpi_device_lock);
 	return 0;
 }