1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/gpu/drm/drm_drv.c b/drivers/gpu/drm/drm_drv.c
index c4ada8b6295..f01def16a66 100644
--- a/drivers/gpu/drm/drm_drv.c
+++ b/drivers/gpu/drm/drm_drv.c
@@ -456,7 +456,8 @@ int drm_ioctl(struct inode *inode, struct file *filp,
                 retcode = -EINVAL;
         } else if (((ioctl->flags & DRM_ROOT_ONLY) && !capable(CAP_SYS_ADMIN)) ||
                    ((ioctl->flags & DRM_AUTH) && !file_priv->authenticated) ||
-                   ((ioctl->flags & DRM_MASTER) && !file_priv->is_master)) {
+                   ((ioctl->flags & DRM_MASTER) && !file_priv->is_master) ||
+                   (!(ioctl->flags & DRM_CONTROL_ALLOW) && (file_priv->minor->type == DRM_MINOR_CONTROL))) {
                 retcode = -EACCES;
         } else {
                 if (cmd & (IOC_IN | IOC_OUT)) {