1 files changed, 32 insertions, 14 deletions

diff --git a/drivers/pci/hotplug/acpiphp_glue.c b/drivers/pci/hotplug/acpiphp_glue.c
index 050b6f9abfd..59df8575a48 100644
--- a/drivers/pci/hotplug/acpiphp_glue.c
+++ b/drivers/pci/hotplug/acpiphp_glue.c
@@ -61,6 +61,7 @@ static DEFINE_MUTEX(bridge_mutex);
 static void handle_hotplug_event_bridge (acpi_handle, u32, void *);
 static void acpiphp_sanitize_bus(struct pci_bus *bus);
 static void acpiphp_set_hpp_values(struct pci_bus *bus);
+static void hotplug_event_func(acpi_handle handle, u32 type, void *context);
 static void handle_hotplug_event_func(acpi_handle handle, u32 type, void *context);
 static void free_bridge(struct kref *kref);
 
@@ -147,7 +148,7 @@ static int post_dock_fixups(struct notifier_block *nb, unsigned long val,
 
 
 static const struct acpi_dock_ops acpiphp_dock_ops = {
-	.handler = handle_hotplug_event_func,
+	.handler = hotplug_event_func,
 };
 
 /* Check whether the PCI device is managed by native PCIe hotplug driver */
@@ -179,6 +180,20 @@ static bool device_is_managed_by_native_pciehp(struct pci_dev *pdev)
 	return true;
 }
 
+static void acpiphp_dock_init(void *data)
+{
+	struct acpiphp_func *func = data;
+
+	get_bridge(func->slot->bridge);
+}
+
+static void acpiphp_dock_release(void *data)
+{
+	struct acpiphp_func *func = data;
+
+	put_bridge(func->slot->bridge);
+}
+
 /* callback routine to register each ACPI PCI slot object */
 static acpi_status
 register_slot(acpi_handle handle, u32 lvl, void *context, void **rv)
@@ -298,7 +313,8 @@ register_slot(acpi_handle handle, u32 lvl, void *context, void **rv)
 		 */
 		newfunc->flags &= ~FUNC_HAS_EJ0;
 		if (register_hotplug_dock_device(handle,
-			&acpiphp_dock_ops, newfunc))
+			&acpiphp_dock_ops, newfunc,
+			acpiphp_dock_init, acpiphp_dock_release))
 			dbg("failed to register dock device\n");
 
 		/* we need to be notified when dock events happen
@@ -1068,22 +1084,12 @@ static void handle_hotplug_event_bridge(acpi_handle handle, u32 type,
 	alloc_acpi_hp_work(handle, type, context, _handle_hotplug_event_bridge);
 }
 
-static void _handle_hotplug_event_func(struct work_struct *work)
+static void hotplug_event_func(acpi_handle handle, u32 type, void *context)
 {
-	struct acpiphp_func *func;
+	struct acpiphp_func *func = context;
 	char objname[64];
 	struct acpi_buffer buffer = { .length = sizeof(objname),
 				      .pointer = objname };
-	struct acpi_hp_work *hp_work;
-	acpi_handle handle;
-	u32 type;
-
-	hp_work = container_of(work, struct acpi_hp_work, work);
-	handle = hp_work->handle;
-	type = hp_work->type;
-	func = (struct acpiphp_func *)hp_work->context;
-
-	acpi_scan_lock_acquire();
 
 	acpi_get_name(handle, ACPI_FULL_PATHNAME, &buffer);
 
@@ -1116,6 +1122,18 @@ static void _handle_hotplug_event_func(struct work_struct *work)
 		warn("notify_handler: unknown event type 0x%x for %s\n", type, objname);
 		break;
 	}
+}
+
+static void _handle_hotplug_event_func(struct work_struct *work)
+{
+	struct acpi_hp_work *hp_work;
+	struct acpiphp_func *func;
+
+	hp_work = container_of(work, struct acpi_hp_work, work);
+	func = hp_work->context;
+	acpi_scan_lock_acquire();
+
+	hotplug_event_func(hp_work->handle, hp_work->type, func);
 
 	acpi_scan_lock_release();
 	kfree(hp_work); /* allocated in handle_hotplug_event_func */