diff --git a/drivers/gpu/drm/radeon/radeon_drv.c b/drivers/gpu/drm/radeon/radeon_drv.c
index 29f040a..3f2d8ca 100644
--- a/drivers/gpu/drm/radeon/radeon_drv.c
+++ b/drivers/gpu/drm/radeon/radeon_drv.c
@@ -286,7 +286,7 @@ static struct drm_driver kms_driver = {
 		 .poll = drm_poll,
 		 .fasync = drm_fasync,
 #ifdef CONFIG_COMPAT
-		 .compat_ioctl = NULL,
+		 .compat_ioctl = radeon_compat_ioctl,
 #endif
 	},