Index: linux-pm/drivers/acpi/scan.c
===================================================================
--- linux-pm.orig/drivers/acpi/scan.c
+++ linux-pm/drivers/acpi/scan.c
@@ -285,9 +285,8 @@ static int acpi_scan_hot_remove(struct a
 	return 0;
 }
 
-static void acpi_bus_device_eject(void *context)
+static void acpi_bus_device_eject(acpi_handle handle, u32 ost_source)
 {
-	acpi_handle handle = context;
 	struct acpi_device *device = NULL;
 	struct acpi_scan_handler *handler;
 	u32 ost_code = ACPI_OST_SC_NON_SPECIFIC_FAILURE;
@@ -304,8 +303,10 @@ static void acpi_bus_device_eject(void *
 	if (!handler || !handler->hotplug.enabled)
 		goto err_support;
 
-	acpi_evaluate_hotplug_ost(handle, ACPI_NOTIFY_EJECT_REQUEST,
-				  ACPI_OST_SC_EJECT_IN_PROGRESS, NULL);
+	if (ost_source == ACPI_NOTIFY_EJECT_REQUEST)
+		acpi_evaluate_hotplug_ost(handle, ACPI_NOTIFY_EJECT_REQUEST,
+					  ACPI_OST_SC_EJECT_IN_PROGRESS, NULL);
+
 	if (handler->hotplug.mode == AHM_CONTAINER)
 		kobject_uevent(&device->dev.kobj, KOBJ_OFFLINE);
 
@@ -325,11 +326,22 @@ static void acpi_bus_device_eject(void *
  err_support:
 	ost_code = ACPI_OST_SC_EJECT_NOT_SUPPORTED;
  err_out:
-	acpi_evaluate_hotplug_ost(handle, ACPI_NOTIFY_EJECT_REQUEST, ost_code,
-				  NULL);
+	acpi_evaluate_hotplug_ost(handle, ost_source, ost_code, NULL);
 	goto out;
 }
 
+/**
+ * acpi_bus_hot_remove_device: Eject a device and its children.
+ * @context: ACPI handle of the device to eject.
+ *
+ * Hot-remove a device and its children. This function is to be called
+ * asynchronously through acpi_os_hotplug_execute().
+ */
+void acpi_bus_hot_remove_device(void *context)
+{
+	acpi_bus_device_eject(context, ACPI_NOTIFY_EJECT_REQUEST);
+}
+
 static void acpi_scan_bus_device_check(acpi_handle handle, u32 ost_source)
 {
 	struct acpi_device *device = NULL;
@@ -428,7 +440,7 @@ static void acpi_hotplug_notify_cb(acpi_
 		break;
 	case ACPI_NOTIFY_EJECT_REQUEST:
 		acpi_handle_debug(handle, "ACPI_NOTIFY_EJECT_REQUEST event\n");
-		callback = acpi_bus_device_eject;
+		callback = acpi_bus_hot_remove_device;
 		break;
 	default:
 		/* non-hotplug event; possibly handled by other handler */
@@ -441,36 +453,6 @@ static void acpi_hotplug_notify_cb(acpi_
 					  NULL);
 }
 
-/**
- * acpi_bus_hot_remove_device: hot-remove a device and its children
- * @context: struct acpi_eject_event pointer (freed in this func)
- *
- * Hot-remove a device and its children. This function frees up the
- * memory space passed by arg context, so that the caller may call
- * this function asynchronously through acpi_os_hotplug_execute().
- */
-void acpi_bus_hot_remove_device(void *context)
-{
-	struct acpi_eject_event *ej_event = context;
-	struct acpi_device *device = ej_event->device;
-	acpi_handle handle = device->handle;
-	int error;
-
-	lock_device_hotplug();
-	mutex_lock(&acpi_scan_lock);
-
-	error = acpi_scan_hot_remove(device);
-	if (error && handle)
-		acpi_evaluate_hotplug_ost(handle, ej_event->event,
-					  ACPI_OST_SC_NON_SPECIFIC_FAILURE,
-					  NULL);
-
-	mutex_unlock(&acpi_scan_lock);
-	unlock_device_hotplug();
-	kfree(context);
-}
-EXPORT_SYMBOL(acpi_bus_hot_remove_device);
-
 static ssize_t real_power_state_show(struct device *dev,
 				     struct device_attribute *attr, char *buf)
 {
@@ -497,15 +479,18 @@ static ssize_t power_state_show(struct d
 
 static DEVICE_ATTR(power_state, 0444, power_state_show, NULL);
 
+static void acpi_eject_store_work(void *context)
+{
+	acpi_bus_device_eject(context, ACPI_OST_EC_OSPM_EJECT);
+}
+
 static ssize_t
 acpi_eject_store(struct device *d, struct device_attribute *attr,
 		const char *buf, size_t count)
 {
 	struct acpi_device *acpi_device = to_acpi_device(d);
-	struct acpi_eject_event *ej_event;
 	acpi_object_type not_used;
 	acpi_status status;
-	int ret;
 
 	if (!count || buf[0] != '1')
 		return -EINVAL;
@@ -518,28 +503,16 @@ acpi_eject_store(struct device *d, struc
 	if (ACPI_FAILURE(status) || !acpi_device->flags.ejectable)
 		return -ENODEV;
 
-	ej_event = kmalloc(sizeof(*ej_event), GFP_KERNEL);
-	if (!ej_event) {
-		ret = -ENOMEM;
-		goto err_out;
-	}
 	acpi_evaluate_hotplug_ost(acpi_device->handle, ACPI_OST_EC_OSPM_EJECT,
 				  ACPI_OST_SC_EJECT_IN_PROGRESS, NULL);
-	ej_event->device = acpi_device;
-	ej_event->event = ACPI_OST_EC_OSPM_EJECT;
-	get_device(&acpi_device->dev);
-	status = acpi_os_hotplug_execute(acpi_bus_hot_remove_device, ej_event);
+	status = acpi_os_hotplug_execute(acpi_eject_store_work,
+					 acpi_device->handle);
 	if (ACPI_SUCCESS(status))
 		return count;
 
-	put_device(&acpi_device->dev);
-	kfree(ej_event);
-	ret = status == AE_NO_MEMORY ? -ENOMEM : -EAGAIN;
-
- err_out:
 	acpi_evaluate_hotplug_ost(acpi_device->handle, ACPI_OST_EC_OSPM_EJECT,
 				  ACPI_OST_SC_NON_SPECIFIC_FAILURE, NULL);
-	return ret;
+	return -EAGAIN;
 }
 
 static DEVICE_ATTR(eject, 0200, NULL, acpi_eject_store);
Index: linux-pm/drivers/acpi/internal.h
===================================================================
--- linux-pm.orig/drivers/acpi/internal.h
+++ linux-pm/drivers/acpi/internal.h
@@ -92,6 +92,7 @@ void acpi_device_add_finalize(struct acp
 void acpi_free_pnp_ids(struct acpi_device_pnp *pnp);
 int acpi_bind_one(struct device *dev, acpi_handle handle);
 int acpi_unbind_one(struct device *dev);
+void acpi_bus_hot_remove_device(void *context);
 
 /* --------------------------------------------------------------------------
                                   Power Resource
Index: linux-pm/drivers/acpi/pci_root.c
===================================================================
--- linux-pm.orig/drivers/acpi/pci_root.c
+++ linux-pm/drivers/acpi/pci_root.c
@@ -39,6 +39,8 @@
 #include <acpi/acpi_drivers.h>
 #include <acpi/apei.h>
 
+#include "internal.h"
+
 #define PREFIX "ACPI: "
 
 #define _COMPONENT		ACPI_PCI_COMPONENT
@@ -590,29 +592,6 @@ static void handle_root_bridge_insertion
 		acpi_handle_err(handle, "cannot add bridge to acpi list\n");
 }
 
-static void handle_root_bridge_removal(struct acpi_device *device)
-{
-	acpi_status status;
-	struct acpi_eject_event *ej_event;
-
-	ej_event = kmalloc(sizeof(*ej_event), GFP_KERNEL);
-	if (!ej_event) {
-		/* Inform firmware the hot-remove operation has error */
-		(void) acpi_evaluate_hotplug_ost(device->handle,
-					ACPI_NOTIFY_EJECT_REQUEST,
-					ACPI_OST_SC_NON_SPECIFIC_FAILURE,
-					NULL);
-		return;
-	}
-
-	ej_event->device = device;
-	ej_event->event = ACPI_NOTIFY_EJECT_REQUEST;
-
-	status = acpi_os_hotplug_execute(acpi_bus_hot_remove_device, ej_event);
-	if (ACPI_FAILURE(status))
-		kfree(ej_event);
-}
-
 static void _handle_hotplug_event_root(struct work_struct *work)
 {
 	struct acpi_pci_root *root;
@@ -653,7 +632,8 @@ static void _handle_hotplug_event_root(s
 		acpi_handle_printk(KERN_DEBUG, handle,
 				   "Device eject notify on %s\n", __func__);
 		if (root)
-			handle_root_bridge_removal(root->device);
+			acpi_os_hotplug_execute(acpi_bus_hot_remove_device,
+						handle);
 		break;
 	default:
 		acpi_handle_warn(handle,
Index: linux-pm/include/acpi/acpi_bus.h
===================================================================
--- linux-pm.orig/include/acpi/acpi_bus.h
+++ linux-pm/include/acpi/acpi_bus.h
@@ -339,11 +339,6 @@ struct acpi_bus_event {
 	u32 data;
 };
 
-struct acpi_eject_event {
-	struct acpi_device	*device;
-	u32		event;
-};
-
 struct acpi_hp_work {
 	struct work_struct work;
 	acpi_handle handle;
@@ -391,7 +386,6 @@ int acpi_scan_add_handler(struct acpi_sc
 int acpi_bus_register_driver(struct acpi_driver *driver);
 void acpi_bus_unregister_driver(struct acpi_driver *driver);
 int acpi_bus_scan(acpi_handle handle);
-void acpi_bus_hot_remove_device(void *context);
 void acpi_bus_trim(struct acpi_device *start);
 acpi_status acpi_bus_get_ejd(acpi_handle handle, acpi_handle * ejd);
 int acpi_match_device_ids(struct acpi_device *device,
