1 files changed, 23 insertions, 23 deletions

diff --git a/drivers/acpi/battery.c b/drivers/acpi/battery.c
index 00b0728efe82..24bf4dca88cc 100644
--- a/drivers/acpi/battery.c
+++ b/drivers/acpi/battery.c
@@ -59,6 +59,9 @@ ACPI_MODULE_NAME("acpi_battery")
 MODULE_DESCRIPTION(ACPI_BATTERY_DRIVER_NAME);
 MODULE_LICENSE("GPL");
 
+extern struct proc_dir_entry *acpi_lock_battery_dir(void);
+extern void *acpi_unlock_battery_dir(struct proc_dir_entry *acpi_battery_dir);
+
 static int acpi_battery_add(struct acpi_device *device);
 static int acpi_battery_remove(struct acpi_device *device, int type);
 
@@ -108,7 +111,7 @@ struct acpi_battery_trips {
 };
 
 struct acpi_battery {
-        acpi_handle handle;
+        struct acpi_device * device;
         struct acpi_battery_flags flags;
         struct acpi_battery_trips trips;
         unsigned long alarm;
@@ -138,7 +141,7 @@ acpi_battery_get_info(struct acpi_battery *battery,
 
         /* Evalute _BIF */
 
-        status = acpi_evaluate_object(battery->handle, "_BIF", NULL, &buffer);
+        status = acpi_evaluate_object(battery->device->handle, "_BIF", NULL, &buffer);
         if (ACPI_FAILURE(status)) {
                 ACPI_EXCEPTION((AE_INFO, status, "Evaluating _BIF"));
                 return -ENODEV;
@@ -171,7 +174,7 @@ acpi_battery_get_info(struct acpi_battery *battery,
         }
 
       end:
-        acpi_os_free(buffer.pointer);
+        kfree(buffer.pointer);
 
         if (!result)
                 (*bif) = (struct acpi_battery_info *)data.pointer;
@@ -198,7 +201,7 @@ acpi_battery_get_status(struct acpi_battery *battery,
 
         /* Evalute _BST */
 
-        status = acpi_evaluate_object(battery->handle, "_BST", NULL, &buffer);
+        status = acpi_evaluate_object(battery->device->handle, "_BST", NULL, &buffer);
         if (ACPI_FAILURE(status)) {
                 ACPI_EXCEPTION((AE_INFO, status, "Evaluating _BST"));
                 return -ENODEV;
@@ -231,7 +234,7 @@ acpi_battery_get_status(struct acpi_battery *battery,
         }
 
       end:
-        acpi_os_free(buffer.pointer);
+        kfree(buffer.pointer);
 
         if (!result)
                 (*bst) = (struct acpi_battery_status *)data.pointer;
@@ -255,7 +258,7 @@ acpi_battery_set_alarm(struct acpi_battery *battery, unsigned long alarm)
 
         arg0.integer.value = alarm;
 
-        status = acpi_evaluate_object(battery->handle, "_BTP", &arg_list, NULL);
+        status = acpi_evaluate_object(battery->device->handle, "_BTP", &arg_list, NULL);
         if (ACPI_FAILURE(status))
                 return -ENODEV;
 
@@ -278,9 +281,7 @@ static int acpi_battery_check(struct acpi_battery *battery)
         if (!battery)
                 return -EINVAL;
 
-        result = acpi_bus_get_device(battery->handle, &device);
-        if (result)
-                return result;
+        device = battery->device;
 
         result = acpi_bus_get_status(device);
         if (result)
@@ -305,7 +306,7 @@ static int acpi_battery_check(struct acpi_battery *battery)
 
                 /* See if alarms are supported, and if so, set default */
 
-                status = acpi_get_handle(battery->handle, "_BTP", &handle);
+                status = acpi_get_handle(battery->device->handle, "_BTP", &handle);
                 if (ACPI_SUCCESS(status)) {
                         battery->flags.alarm = 1;
                         acpi_battery_set_alarm(battery, battery->trips.warning);
@@ -662,12 +663,13 @@ static void acpi_battery_notify(acpi_handle handle, u32 event, void *data)
         if (!battery)
                 return;
 
-        if (acpi_bus_get_device(handle, &device))
-                return;
+        device = battery->device;
 
         switch (event) {
         case ACPI_BATTERY_NOTIFY_STATUS:
         case ACPI_BATTERY_NOTIFY_INFO:
+        case ACPI_NOTIFY_BUS_CHECK:
+        case ACPI_NOTIFY_DEVICE_CHECK:
                 acpi_battery_check(battery);
                 acpi_bus_generate_event(device, event, battery->flags.present);
                 break;
@@ -695,7 +697,7 @@ static int acpi_battery_add(struct acpi_device *device)
                 return -ENOMEM;
         memset(battery, 0, sizeof(struct acpi_battery));
 
-        battery->handle = device->handle;
+        battery->device = device;
         strcpy(acpi_device_name(device), ACPI_BATTERY_DEVICE_NAME);
         strcpy(acpi_device_class(device), ACPI_BATTERY_CLASS);
         acpi_driver_data(device) = battery;
@@ -708,8 +710,8 @@ static int acpi_battery_add(struct acpi_device *device)
         if (result)
                 goto end;
 
-        status = acpi_install_notify_handler(battery->handle,
-                                             ACPI_DEVICE_NOTIFY,
+        status = acpi_install_notify_handler(device->handle,
+                                             ACPI_ALL_NOTIFY,
                                              acpi_battery_notify, battery);
         if (ACPI_FAILURE(status)) {
                 result = -ENODEV;
@@ -740,8 +742,8 @@ static int acpi_battery_remove(struct acpi_device *device, int type)
 
         battery = (struct acpi_battery *)acpi_driver_data(device);
 
-        status = acpi_remove_notify_handler(battery->handle,
-                                            ACPI_DEVICE_NOTIFY,
+        status = acpi_remove_notify_handler(device->handle,
+                                            ACPI_ALL_NOTIFY,
                                             acpi_battery_notify);
 
         acpi_battery_remove_fs(device);
@@ -753,17 +755,15 @@ static int acpi_battery_remove(struct acpi_device *device, int type)
 
 static int __init acpi_battery_init(void)
 {
-        int result = 0;
-
+        int result;
 
-        acpi_battery_dir = proc_mkdir(ACPI_BATTERY_CLASS, acpi_root_dir);
+        acpi_battery_dir = acpi_lock_battery_dir();
         if (!acpi_battery_dir)
                 return -ENODEV;
-        acpi_battery_dir->owner = THIS_MODULE;
 
         result = acpi_bus_register_driver(&acpi_battery_driver);
         if (result < 0) {
-                remove_proc_entry(ACPI_BATTERY_CLASS, acpi_root_dir);
+                acpi_unlock_battery_dir(acpi_battery_dir);
                 return -ENODEV;
         }
 
@@ -775,7 +775,7 @@ static void __exit acpi_battery_exit(void)
 
         acpi_bus_unregister_driver(&acpi_battery_driver);
 
-        remove_proc_entry(ACPI_BATTERY_CLASS, acpi_root_dir);
+        acpi_unlock_battery_dir(acpi_battery_dir);
 
         return;
 }