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path: root/drivers/acpi/ac.c
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Diffstat (limited to 'drivers/acpi/ac.c')
-rw-r--r--drivers/acpi/ac.c32
1 files changed, 17 insertions, 15 deletions
diff --git a/drivers/acpi/ac.c b/drivers/acpi/ac.c
index 36ca365bcead..24ccf81d135f 100644
--- a/drivers/acpi/ac.c
+++ b/drivers/acpi/ac.c
@@ -50,6 +50,9 @@ ACPI_MODULE_NAME("acpi_ac")
MODULE_DESCRIPTION(ACPI_AC_DRIVER_NAME);
MODULE_LICENSE("GPL");
+extern struct proc_dir_entry *acpi_lock_ac_dir(void);
+extern void *acpi_unlock_ac_dir(struct proc_dir_entry *acpi_ac_dir);
+
static int acpi_ac_add(struct acpi_device *device);
static int acpi_ac_remove(struct acpi_device *device, int type);
static int acpi_ac_open_fs(struct inode *inode, struct file *file);
@@ -65,7 +68,7 @@ static struct acpi_driver acpi_ac_driver = {
};
struct acpi_ac {
- acpi_handle handle;
+ struct acpi_device * device;
unsigned long state;
};
@@ -88,7 +91,7 @@ static int acpi_ac_get_state(struct acpi_ac *ac)
if (!ac)
return -EINVAL;
- status = acpi_evaluate_integer(ac->handle, "_PSR", NULL, &ac->state);
+ status = acpi_evaluate_integer(ac->device->handle, "_PSR", NULL, &ac->state);
if (ACPI_FAILURE(status)) {
ACPI_EXCEPTION((AE_INFO, status, "Error reading AC Adapter state"));
ac->state = ACPI_AC_STATUS_UNKNOWN;
@@ -191,11 +194,11 @@ static void acpi_ac_notify(acpi_handle handle, u32 event, void *data)
if (!ac)
return;
- if (acpi_bus_get_device(ac->handle, &device))
- return;
-
+ device = ac->device;
switch (event) {
case ACPI_AC_NOTIFY_STATUS:
+ case ACPI_NOTIFY_BUS_CHECK:
+ case ACPI_NOTIFY_DEVICE_CHECK:
acpi_ac_get_state(ac);
acpi_bus_generate_event(device, event, (u32) ac->state);
break;
@@ -223,7 +226,7 @@ static int acpi_ac_add(struct acpi_device *device)
return -ENOMEM;
memset(ac, 0, sizeof(struct acpi_ac));
- ac->handle = device->handle;
+ ac->device = device;
strcpy(acpi_device_name(device), ACPI_AC_DEVICE_NAME);
strcpy(acpi_device_class(device), ACPI_AC_CLASS);
acpi_driver_data(device) = ac;
@@ -236,8 +239,8 @@ static int acpi_ac_add(struct acpi_device *device)
if (result)
goto end;
- status = acpi_install_notify_handler(ac->handle,
- ACPI_DEVICE_NOTIFY, acpi_ac_notify,
+ status = acpi_install_notify_handler(device->handle,
+ ACPI_ALL_NOTIFY, acpi_ac_notify,
ac);
if (ACPI_FAILURE(status)) {
result = -ENODEV;
@@ -268,8 +271,8 @@ static int acpi_ac_remove(struct acpi_device *device, int type)
ac = (struct acpi_ac *)acpi_driver_data(device);
- status = acpi_remove_notify_handler(ac->handle,
- ACPI_DEVICE_NOTIFY, acpi_ac_notify);
+ status = acpi_remove_notify_handler(device->handle,
+ ACPI_ALL_NOTIFY, acpi_ac_notify);
acpi_ac_remove_fs(device);
@@ -280,17 +283,16 @@ static int acpi_ac_remove(struct acpi_device *device, int type)
static int __init acpi_ac_init(void)
{
- int result = 0;
+ int result;
- acpi_ac_dir = proc_mkdir(ACPI_AC_CLASS, acpi_root_dir);
+ acpi_ac_dir = acpi_lock_ac_dir();
if (!acpi_ac_dir)
return -ENODEV;
- acpi_ac_dir->owner = THIS_MODULE;
result = acpi_bus_register_driver(&acpi_ac_driver);
if (result < 0) {
- remove_proc_entry(ACPI_AC_CLASS, acpi_root_dir);
+ acpi_unlock_ac_dir(acpi_ac_dir);
return -ENODEV;
}
@@ -302,7 +304,7 @@ static void __exit acpi_ac_exit(void)
acpi_bus_unregister_driver(&acpi_ac_driver);
- remove_proc_entry(ACPI_AC_CLASS, acpi_root_dir);
+ acpi_unlock_ac_dir(acpi_ac_dir);
return;
}
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