Merge branch 'bjorn-notify' into release

Conflicts:
	drivers/platform/x86/eeepc-laptop.c

Signed-off-by: Len Brown <len.brown@intel.com>

3 files changed, 39 insertions, 106 deletions

diff --git a/drivers/acpi/ac.c b/drivers/acpi/ac.c
index 88e42abf5d8..0df8fcb687d 100644
--- a/drivers/acpi/ac.c
+++ b/drivers/acpi/ac.c
@@ -61,6 +61,7 @@ static int acpi_ac_open_fs(struct inode *inode, struct file *file);
 static int acpi_ac_add(struct acpi_device *device);
 static int acpi_ac_remove(struct acpi_device *device, int type);
 static int acpi_ac_resume(struct acpi_device *device);
+static void acpi_ac_notify(struct acpi_device *device, u32 event);
 
 static const struct acpi_device_id ac_device_ids[] = {
 	{"ACPI0003", 0},
@@ -72,10 +73,12 @@ static struct acpi_driver acpi_ac_driver = {
 	.name = "ac",
 	.class = ACPI_AC_CLASS,
 	.ids = ac_device_ids,
+	.flags = ACPI_DRIVER_ALL_NOTIFY_EVENTS,
 	.ops = {
 		.add = acpi_ac_add,
 		.remove = acpi_ac_remove,
 		.resume = acpi_ac_resume,
+		.notify = acpi_ac_notify,
 		},
 };
 
@@ -220,16 +223,14 @@ static int acpi_ac_remove_fs(struct acpi_device *device)
                                    Driver Model
    -------------------------------------------------------------------------- */
 
-static void acpi_ac_notify(acpi_handle handle, u32 event, void *data)
+static void acpi_ac_notify(struct acpi_device *device, u32 event)
 {
-	struct acpi_ac *ac = data;
-	struct acpi_device *device = NULL;
+	struct acpi_ac *ac = acpi_driver_data(device);
 
 
 	if (!ac)
 		return;
 
-	device = ac->device;
 	switch (event) {
 	default:
 		ACPI_DEBUG_PRINT((ACPI_DB_INFO,
@@ -253,7 +254,6 @@ static void acpi_ac_notify(acpi_handle handle, u32 event, void *data)
 static int acpi_ac_add(struct acpi_device *device)
 {
 	int result = 0;
-	acpi_status status = AE_OK;
 	struct acpi_ac *ac = NULL;
 
 
@@ -286,13 +286,6 @@ static int acpi_ac_add(struct acpi_device *device)
 	ac->charger.get_property = get_ac_property;
 	power_supply_register(&ac->device->dev, &ac->charger);
 #endif
-	status = acpi_install_notify_handler(device->handle,
-					     ACPI_ALL_NOTIFY, acpi_ac_notify,
-					     ac);
-	if (ACPI_FAILURE(status)) {
-		result = -ENODEV;
-		goto end;
-	}
 
 	printk(KERN_INFO PREFIX "%s [%s] (%s)\n",
 	       acpi_device_name(device), acpi_device_bid(device),
@@ -328,7 +321,6 @@ static int acpi_ac_resume(struct acpi_device *device)
 
 static int acpi_ac_remove(struct acpi_device *device, int type)
 {
-	acpi_status status = AE_OK;
 	struct acpi_ac *ac = NULL;
 
 
@@ -337,8 +329,6 @@ static int acpi_ac_remove(struct acpi_device *device, int type)
 
 	ac = acpi_driver_data(device);
 
-	status = acpi_remove_notify_handler(device->handle,
-					    ACPI_ALL_NOTIFY, acpi_ac_notify);
 #ifdef CONFIG_ACPI_SYSFS_POWER
 	if (ac->charger.dev)
 		power_supply_unregister(&ac->charger);
diff --git a/drivers/acpi/battery.c b/drivers/acpi/battery.c
index b0de6312919..58b4517ce71 100644
--- a/drivers/acpi/battery.c
+++ b/drivers/acpi/battery.c
@@ -796,13 +796,12 @@ static void acpi_battery_remove_fs(struct acpi_device *device)
                                  Driver Interface
    -------------------------------------------------------------------------- */
 
-static void acpi_battery_notify(acpi_handle handle, u32 event, void *data)
+static void acpi_battery_notify(struct acpi_device *device, u32 event)
 {
-	struct acpi_battery *battery = data;
-	struct acpi_device *device;
+	struct acpi_battery *battery = acpi_driver_data(device);
+
 	if (!battery)
 		return;
-	device = battery->device;
 	acpi_battery_update(battery);
 	acpi_bus_generate_proc_event(device, event,
 				     acpi_battery_present(battery));
@@ -819,7 +818,6 @@ static void acpi_battery_notify(acpi_handle handle, u32 event, void *data)
 static int acpi_battery_add(struct acpi_device *device)
 {
 	int result = 0;
-	acpi_status status = 0;
 	struct acpi_battery *battery = NULL;
 	if (!device)
 		return -EINVAL;
@@ -834,22 +832,12 @@ static int acpi_battery_add(struct acpi_device *device)
 	acpi_battery_update(battery);
 #ifdef CONFIG_ACPI_PROCFS_POWER
 	result = acpi_battery_add_fs(device);
-	if (result)
-		goto end;
 #endif
-	status = acpi_install_notify_handler(device->handle,
-					     ACPI_ALL_NOTIFY,
-					     acpi_battery_notify, battery);
-	if (ACPI_FAILURE(status)) {
-		ACPI_EXCEPTION((AE_INFO, status, "Installing notify handler"));
-		result = -ENODEV;
-		goto end;
-	}
-	printk(KERN_INFO PREFIX "%s Slot [%s] (battery %s)\n",
-	       ACPI_BATTERY_DEVICE_NAME, acpi_device_bid(device),
-	       device->status.battery_present ? "present" : "absent");
-      end:
-	if (result) {
+	if (!result) {
+		printk(KERN_INFO PREFIX "%s Slot [%s] (battery %s)\n",
+			ACPI_BATTERY_DEVICE_NAME, acpi_device_bid(device),
+			device->status.battery_present ? "present" : "absent");
+	} else {
 #ifdef CONFIG_ACPI_PROCFS_POWER
 		acpi_battery_remove_fs(device);
 #endif
@@ -860,15 +848,11 @@ static int acpi_battery_add(struct acpi_device *device)
 
 static int acpi_battery_remove(struct acpi_device *device, int type)
 {
-	acpi_status status = 0;
 	struct acpi_battery *battery = NULL;
 
 	if (!device || !acpi_driver_data(device))
 		return -EINVAL;
 	battery = acpi_driver_data(device);
-	status = acpi_remove_notify_handler(device->handle,
-					    ACPI_ALL_NOTIFY,
-					    acpi_battery_notify);
 #ifdef CONFIG_ACPI_PROCFS_POWER
 	acpi_battery_remove_fs(device);
 #endif
@@ -896,10 +880,12 @@ static struct acpi_driver acpi_battery_driver = {
 	.name = "battery",
 	.class = ACPI_BATTERY_CLASS,
 	.ids = battery_device_ids,
+	.flags = ACPI_DRIVER_ALL_NOTIFY_EVENTS,
 	.ops = {
 		.add = acpi_battery_add,
 		.resume = acpi_battery_resume,
 		.remove = acpi_battery_remove,
+		.notify = acpi_battery_notify,
 		},
 };
 
diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c
index ae862f1798d..2876fc70c3a 100644
--- a/drivers/acpi/bus.c
+++ b/drivers/acpi/bus.c
@@ -450,18 +450,16 @@ int acpi_bus_receive_event(struct acpi_bus_event *event)
                              Notification Handling
    -------------------------------------------------------------------------- */
 
-static int
-acpi_bus_check_device(struct acpi_device *device, int *status_changed)
+static void acpi_bus_check_device(acpi_handle handle)
 {
-	acpi_status status = 0;
+	struct acpi_device *device;
+	acpi_status status;
 	struct acpi_device_status old_status;
 
-
+	if (acpi_bus_get_device(handle, &device))
+		return;
 	if (!device)
-		return -EINVAL;
-
-	if (status_changed)
-		*status_changed = 0;
+		return;
 
 	old_status = device->status;
 
@@ -471,22 +469,15 @@ acpi_bus_check_device(struct acpi_device *device, int *status_changed)
 	 */
 	if (device->parent && !device->parent->status.present) {
 		device->status = device->parent->status;
-		if (STRUCT_TO_INT(old_status) != STRUCT_TO_INT(device->status)) {
-			if (status_changed)
-				*status_changed = 1;
-		}
-		return 0;
+		return;
 	}
 
 	status = acpi_bus_get_status(device);
 	if (ACPI_FAILURE(status))
-		return -ENODEV;
+		return;
 
 	if (STRUCT_TO_INT(old_status) == STRUCT_TO_INT(device->status))
-		return 0;
-
-	if (status_changed)
-		*status_changed = 1;
+		return;
 
 	/*
 	 * Device Insertion/Removal
@@ -498,33 +489,17 @@ acpi_bus_check_device(struct acpi_device *device, int *status_changed)
 		ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device removal detected\n"));
 		/* TBD: Handle device removal */
 	}
-
-	return 0;
 }
 
-static int acpi_bus_check_scope(struct acpi_device *device)
+static void acpi_bus_check_scope(acpi_handle handle)
 {
-	int result = 0;
-	int status_changed = 0;
-
-
-	if (!device)
-		return -EINVAL;
-
 	/* Status Change? */
-	result = acpi_bus_check_device(device, &status_changed);
-	if (result)
-		return result;
-
-	if (!status_changed)
-		return 0;
+	acpi_bus_check_device(handle);
 
 	/*
 	 * TBD: Enumerate child devices within this device's scope and
 	 *       run acpi_bus_check_device()'s on them.
 	 */
-
-	return 0;
 }
 
 static BLOCKING_NOTIFIER_HEAD(acpi_bus_notify_list);
@@ -547,22 +522,19 @@ EXPORT_SYMBOL_GPL(unregister_acpi_bus_notifier);
  */
 static void acpi_bus_notify(acpi_handle handle, u32 type, void *data)
 {
-	int result = 0;
 	struct acpi_device *device = NULL;
+	struct acpi_driver *driver;
+
+	ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Notification %#02x to handle %p\n",
+			  type, handle));
 
 	blocking_notifier_call_chain(&acpi_bus_notify_list,
 		type, (void *)handle);
 
-	if (acpi_bus_get_device(handle, &device))
-		return;
-
 	switch (type) {
 
 	case ACPI_NOTIFY_BUS_CHECK:
-		ACPI_DEBUG_PRINT((ACPI_DB_INFO,
-				  "Received BUS CHECK notification for device [%s]\n",
-				  device->pnp.bus_id));
-		result = acpi_bus_check_scope(device);
+		acpi_bus_check_scope(handle);
 		/*
 		 * TBD: We'll need to outsource certain events to non-ACPI
 		 *      drivers via the device manager (device.c).
@@ -570,10 +542,7 @@ static void acpi_bus_notify(acpi_handle handle, u32 type, void *data)
 		break;
 
 	case ACPI_NOTIFY_DEVICE_CHECK:
-		ACPI_DEBUG_PRINT((ACPI_DB_INFO,
-				  "Received DEVICE CHECK notification for device [%s]\n",
-				  device->pnp.bus_id));
-		result = acpi_bus_check_device(device, NULL);
+		acpi_bus_check_device(handle);
 		/*
 		 * TBD: We'll need to outsource certain events to non-ACPI
 		 *      drivers via the device manager (device.c).
@@ -581,44 +550,26 @@ static void acpi_bus_notify(acpi_handle handle, u32 type, void *data)
 		break;
 
 	case ACPI_NOTIFY_DEVICE_WAKE:
-		ACPI_DEBUG_PRINT((ACPI_DB_INFO,
-				  "Received DEVICE WAKE notification for device [%s]\n",
-				  device->pnp.bus_id));
 		/* TBD */
 		break;
 
 	case ACPI_NOTIFY_EJECT_REQUEST:
-		ACPI_DEBUG_PRINT((ACPI_DB_INFO,
-				  "Received EJECT REQUEST notification for device [%s]\n",
-				  device->pnp.bus_id));
 		/* TBD */
 		break;
 
 	case ACPI_NOTIFY_DEVICE_CHECK_LIGHT:
-		ACPI_DEBUG_PRINT((ACPI_DB_INFO,
-				  "Received DEVICE CHECK LIGHT notification for device [%s]\n",
-				  device->pnp.bus_id));
 		/* TBD: Exactly what does 'light' mean? */
 		break;
 
 	case ACPI_NOTIFY_FREQUENCY_MISMATCH:
-		ACPI_DEBUG_PRINT((ACPI_DB_INFO,
-				  "Received FREQUENCY MISMATCH notification for device [%s]\n",
-				  device->pnp.bus_id));
 		/* TBD */
 		break;
 
 	case ACPI_NOTIFY_BUS_MODE_MISMATCH:
-		ACPI_DEBUG_PRINT((ACPI_DB_INFO,
-				  "Received BUS MODE MISMATCH notification for device [%s]\n",
-				  device->pnp.bus_id));
 		/* TBD */
 		break;
 
 	case ACPI_NOTIFY_POWER_FAULT:
-		ACPI_DEBUG_PRINT((ACPI_DB_INFO,
-				  "Received POWER FAULT notification for device [%s]\n",
-				  device->pnp.bus_id));
 		/* TBD */
 		break;
 
@@ -629,7 +580,13 @@ static void acpi_bus_notify(acpi_handle handle, u32 type, void *data)
 		break;
 	}
 
-	return;
+	acpi_bus_get_device(handle, &device);
+	if (device) {
+		driver = device->driver;
+		if (driver && driver->ops.notify &&
+		    (driver->flags & ACPI_DRIVER_ALL_NOTIFY_EVENTS))
+			driver->ops.notify(device, type);
+	}
 }
 
 /* --------------------------------------------------------------------------