2 files changed, 65 insertions, 6 deletions

diff --git a/drivers/acpi/dock.c b/drivers/acpi/dock.c
index 2563bc62987d..4b395b1e61b2 100644
--- a/drivers/acpi/dock.c
+++ b/drivers/acpi/dock.c
@@ -748,6 +748,20 @@ static void dock_notify(acpi_handle handle, u32 event, void *data)
 	}
 }
 
+struct dock_data {
+	acpi_handle handle;
+	unsigned long event;
+	struct dock_station *ds;
+};
+
+static void acpi_dock_deferred_cb(void *context)
+{
+	struct dock_data *data = (struct dock_data *)context;
+
+	dock_notify(data->handle, data->event, data->ds);
+	kfree(data);
+}
+
 static int acpi_dock_notifier_call(struct notifier_block *this,
 	unsigned long event, void *data)
 {
@@ -759,7 +773,16 @@ static int acpi_dock_notifier_call(struct notifier_block *this,
 		return 0;
 	list_for_each_entry(dock_station, &dock_stations, sibiling) {
 		if (dock_station->handle == handle) {
-			dock_notify(handle, event, dock_station);
+			struct dock_data *dock_data;
+
+			dock_data = kmalloc(sizeof(*dock_data), GFP_KERNEL);
+			if (!dock_data)
+				return 0;
+			dock_data->handle = handle;
+			dock_data->event = event;
+			dock_data->ds = dock_station;
+			acpi_os_hotplug_execute(acpi_dock_deferred_cb,
+				dock_data);
 			return 0 ;
 		}
 	}
diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c
index 235a1386888a..750e0df15604 100644
--- a/drivers/acpi/osl.c
+++ b/drivers/acpi/osl.c
@@ -682,6 +682,22 @@ static void acpi_os_execute_deferred(struct work_struct *work)
 	return;
 }
 
+static void acpi_os_execute_hp_deferred(struct work_struct *work)
+{
+	struct acpi_os_dpc *dpc = container_of(work, struct acpi_os_dpc, work);
+	if (!dpc) {
+		printk(KERN_ERR PREFIX "Invalid (NULL) context\n");
+		return;
+	}
+
+	acpi_os_wait_events_complete(NULL);
+
+	dpc->function(dpc->context);
+	kfree(dpc);
+
+	return;
+}
+
 /*******************************************************************************
  *
  * FUNCTION:    acpi_os_execute
@@ -697,12 +713,13 @@ static void acpi_os_execute_deferred(struct work_struct *work)
  *
  ******************************************************************************/
 
-acpi_status acpi_os_execute(acpi_execute_type type,
-			    acpi_osd_exec_callback function, void *context)
+static acpi_status __acpi_os_execute(acpi_execute_type type,
+	acpi_osd_exec_callback function, void *context, int hp)
 {
 	acpi_status status = AE_OK;
 	struct acpi_os_dpc *dpc;
 	struct workqueue_struct *queue;
+	int ret;
 	ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
 			  "Scheduling function [%p(%p)] for deferred execution.\n",
 			  function, context));
@@ -726,9 +743,17 @@ acpi_status acpi_os_execute(acpi_execute_type type,
 	dpc->function = function;
 	dpc->context = context;
 
-	INIT_WORK(&dpc->work, acpi_os_execute_deferred);
-	queue = (type == OSL_NOTIFY_HANDLER) ? kacpi_notify_wq : kacpid_wq;
-	if (!queue_work(queue, &dpc->work)) {
+	if (!hp) {
+		INIT_WORK(&dpc->work, acpi_os_execute_deferred);
+		queue = (type == OSL_NOTIFY_HANDLER) ?
+			kacpi_notify_wq : kacpid_wq;
+		ret = queue_work(queue, &dpc->work);
+	} else {
+		INIT_WORK(&dpc->work, acpi_os_execute_hp_deferred);
+		ret = schedule_work(&dpc->work);
+	}
+
+	if (!ret) {
 		ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
 			  "Call to queue_work() failed.\n"));
 		status = AE_ERROR;
@@ -737,8 +762,19 @@ acpi_status acpi_os_execute(acpi_execute_type type,
 	return_ACPI_STATUS(status);
 }
 
+acpi_status acpi_os_execute(acpi_execute_type type,
+			    acpi_osd_exec_callback function, void *context)
+{
+	return __acpi_os_execute(type, function, context, 0);
+}
 EXPORT_SYMBOL(acpi_os_execute);
 
+acpi_status acpi_os_hotplug_execute(acpi_osd_exec_callback function,
+	void *context)
+{
+	return __acpi_os_execute(0, function, context, 1);
+}
+
 void acpi_os_wait_events_complete(void *context)
 {
 	flush_workqueue(kacpid_wq);