ACPI: Fan: fan device does not need own structure

Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Acked-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Len Brown <len.brown@intel.com>

drivers/acpi/fan.c

@@ -68,10 +68,6 @@ static struct acpi_driver acpi_fan_driver = {
 		},
 };
 
-struct acpi_fan {
-	struct acpi_device * device;
-};
-
 /* --------------------------------------------------------------------------
                               FS Interface (/proc)
    -------------------------------------------------------------------------- */
@@ -80,12 +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",
@@ -105,19 +101,18 @@ acpi_fan_write_state(struct file *file, const char __user * buffer,
 {
 	int result = 0;
 	struct seq_file *m = file->private_data;
-	struct acpi_fan *fan = m->private;
+	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))
 		return -EFAULT;
 
 	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;
@@ -158,7 +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;
 	}
 
@@ -191,14 +186,8 @@ static int acpi_fan_add(struct acpi_device *device)
 	if (!device)
 		return -EINVAL;
 
-	fan = kzalloc(sizeof(struct acpi_fan), GFP_KERNEL);
-	if (!fan)
-		return -ENOMEM;
-
-	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) {
@@ -227,18 +216,11 @@ 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 = acpi_driver_data(device);
-
 	acpi_fan_remove_fs(device);
 
-	kfree(fan);
-
 	return 0;
 }