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);
};
struct acpi_ac {
- acpi_handle handle;
struct acpi_device * device;
unsigned long state;
};
-static struct file_operations acpi_ac_fops = {
+static const struct file_operations acpi_ac_fops = {
.open = acpi_ac_open_fs,
.read = seq_read,
.llseek = seq_lseek,
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;
static int acpi_ac_seq_show(struct seq_file *seq, void *offset)
{
- struct acpi_ac *ac = (struct acpi_ac *)seq->private;
+ struct acpi_ac *ac = seq->private;
if (!ac)
static void acpi_ac_notify(acpi_handle handle, u32 event, void *data)
{
- struct acpi_ac *ac = (struct acpi_ac *)data;
+ struct acpi_ac *ac = data;
struct acpi_device *device = NULL;
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;
if (!device)
return -EINVAL;
- ac = kmalloc(sizeof(struct acpi_ac), GFP_KERNEL);
+ ac = kzalloc(sizeof(struct acpi_ac), GFP_KERNEL);
if (!ac)
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);
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;
if (!device || !acpi_driver_data(device))
return -EINVAL;
- ac = (struct acpi_ac *)acpi_driver_data(device);
+ 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);
static int __init acpi_ac_init(void)
{
- int result = 0;
+ int result;
+ if (acpi_disabled)
+ return -ENODEV;
- 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;
}
acpi_bus_unregister_driver(&acpi_ac_driver);
- remove_proc_entry(ACPI_AC_CLASS, acpi_root_dir);
+ acpi_unlock_ac_dir(acpi_ac_dir);
return;
}