1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/acpi/ibm_acpi.c b/drivers/acpi/ibm_acpi.c
index 1397efb71341..da08b9c62ffc 100644
--- a/drivers/acpi/ibm_acpi.c
+++ b/drivers/acpi/ibm_acpi.c
@@ -1714,7 +1714,7 @@ static struct backlight_properties ibm_backlight_data = {
 
 static int brightness_init(void)
 {
-        ibm_backlight_device = backlight_device_register("ibm", NULL,
+        ibm_backlight_device = backlight_device_register("ibm", NULL, NULL,
                                                          &ibm_backlight_data);
         if (IS_ERR(ibm_backlight_device)) {
                 printk(IBM_ERR "Could not register backlight device\n");