Revert "ACPI: Fan: Drop force_power_state acpi_device option"
[linux-2.6.git] / drivers / acpi / fan.c
index a56acdb..a6e149d 100644 (file)
 
 #define ACPI_FAN_COMPONENT             0x00200000
 #define ACPI_FAN_CLASS                 "fan"
-#define ACPI_FAN_DRIVER_NAME           "ACPI Fan Driver"
 #define ACPI_FAN_FILE_STATE            "state"
 
 #define _COMPONENT             ACPI_FAN_COMPONENT
-ACPI_MODULE_NAME("acpi_fan")
+ACPI_MODULE_NAME("fan");
 
-    MODULE_AUTHOR("Paul Diefenbaugh");
-MODULE_DESCRIPTION(ACPI_FAN_DRIVER_NAME);
+MODULE_AUTHOR("Paul Diefenbaugh");
+MODULE_DESCRIPTION("ACPI Fan Driver");
 MODULE_LICENSE("GPL");
 
 static int acpi_fan_add(struct acpi_device *device);
 static int acpi_fan_remove(struct acpi_device *device, int type);
-static int acpi_fan_suspend(struct acpi_device *device, int state);
-static int acpi_fan_resume(struct acpi_device *device, int state);
+static int acpi_fan_suspend(struct acpi_device *device, pm_message_t state);
+static int acpi_fan_resume(struct acpi_device *device);
+
+static const struct acpi_device_id fan_device_ids[] = {
+       {"PNP0C0B", 0},
+       {"", 0},
+};
+MODULE_DEVICE_TABLE(acpi, fan_device_ids);
 
 static struct acpi_driver acpi_fan_driver = {
-       .name = ACPI_FAN_DRIVER_NAME,
+       .name = "fan",
        .class = ACPI_FAN_CLASS,
-       .ids = "PNP0C0B",
+       .ids = fan_device_ids,
        .ops = {
                .add = acpi_fan_add,
                .remove = acpi_fan_remove,
@@ -63,11 +68,6 @@ static struct acpi_driver acpi_fan_driver = {
                },
 };
 
-struct acpi_fan {
-       acpi_handle handle;
-       struct acpi_device * device;
-};
-
 /* --------------------------------------------------------------------------
                               FS Interface (/proc)
    -------------------------------------------------------------------------- */
@@ -76,12 +76,12 @@ static struct proc_dir_entry *acpi_fan_dir;
 
 static int acpi_fan_read_state(struct seq_file *seq, void *offset)
 {
-       struct acpi_fan *fan = seq->private;
+       struct acpi_device *device = seq->private;
        int state = 0;
 
 
-       if (fan) {
-               if (acpi_bus_get_power(fan->device->handle, &state))
+       if (device) {
+               if (acpi_bus_get_power(device->handle, &state))
                        seq_printf(seq, "status:                  ERROR\n");
                else
                        seq_printf(seq, "status:                  %s\n",
@@ -100,12 +100,11 @@ acpi_fan_write_state(struct file *file, const char __user * buffer,
                     size_t count, loff_t * ppos)
 {
        int result = 0;
-       struct seq_file *m = (struct seq_file *)file->private_data;
-       struct acpi_fan *fan = (struct acpi_fan *)m->private;
+       struct seq_file *m = file->private_data;
+       struct acpi_device *device = m->private;
        char state_string[12] = { '\0' };
 
-
-       if (!fan || (count > sizeof(state_string) - 1))
+       if (count > sizeof(state_string) - 1)
                return -EINVAL;
 
        if (copy_from_user(state_string, buffer, count))
@@ -113,7 +112,7 @@ acpi_fan_write_state(struct file *file, const char __user * buffer,
 
        state_string[count] = '\0';
 
-       result = acpi_bus_set_power(fan->device->handle,
+       result = acpi_bus_set_power(device->handle,
                                    simple_strtoul(state_string, NULL, 0));
        if (result)
                return result;
@@ -121,7 +120,7 @@ acpi_fan_write_state(struct file *file, const char __user * buffer,
        return count;
 }
 
-static struct file_operations acpi_fan_state_ops = {
+static const struct file_operations acpi_fan_state_ops = {
        .open = acpi_fan_state_open_fs,
        .read = seq_read,
        .write = acpi_fan_write_state,
@@ -154,7 +153,7 @@ static int acpi_fan_add_fs(struct acpi_device *device)
                return -ENODEV;
        else {
                entry->proc_fops = &acpi_fan_state_ops;
-               entry->data = acpi_driver_data(device);
+               entry->data = device;
                entry->owner = THIS_MODULE;
        }
 
@@ -187,16 +186,8 @@ static int acpi_fan_add(struct acpi_device *device)
        if (!device)
                return -EINVAL;
 
-       fan = kmalloc(sizeof(struct acpi_fan), GFP_KERNEL);
-       if (!fan)
-               return -ENOMEM;
-       memset(fan, 0, sizeof(struct acpi_fan));
-
-       fan->handle = device->handle;
-       fan->device = device;
        strcpy(acpi_device_name(device), "Fan");
        strcpy(acpi_device_class(device), ACPI_FAN_CLASS);
-       acpi_driver_data(device) = fan;
 
        result = acpi_bus_get_power(device->handle, &state);
        if (result) {
@@ -225,22 +216,15 @@ static int acpi_fan_add(struct acpi_device *device)
 
 static int acpi_fan_remove(struct acpi_device *device, int type)
 {
-       struct acpi_fan *fan = NULL;
-
-
        if (!device || !acpi_driver_data(device))
                return -EINVAL;
 
-       fan = (struct acpi_fan *)acpi_driver_data(device);
-
        acpi_fan_remove_fs(device);
 
-       kfree(fan);
-
        return 0;
 }
 
-static int acpi_fan_suspend(struct acpi_device *device, int state)
+static int acpi_fan_suspend(struct acpi_device *device, pm_message_t state)
 {
        if (!device)
                return -EINVAL;
@@ -250,7 +234,7 @@ static int acpi_fan_suspend(struct acpi_device *device, int state)
        return AE_OK;
 }
 
-static int acpi_fan_resume(struct acpi_device *device, int state)
+static int acpi_fan_resume(struct acpi_device *device)
 {
        int result = 0;
        int power_state = 0;