drm: disable permission check

drivers/gpu/drm/drm_ioctl.c

@@ -496,31 +496,6 @@ static int drm_version(struct drm_device *dev, void *data,
  */
 int drm_ioctl_permit(u32 flags, struct drm_file *file_priv)
 {
-	/* ROOT_ONLY is only for CAP_SYS_ADMIN */
-	if (unlikely((flags & DRM_ROOT_ONLY) && !capable(CAP_SYS_ADMIN)))
-		return -EACCES;
-
-	/* AUTH is only for authenticated or render client */
-	if (unlikely((flags & DRM_AUTH) && !drm_is_render_client(file_priv) &&
-		     !file_priv->authenticated))
-		return -EACCES;
-
-	/* MASTER is only for master or control clients */
-	if (unlikely((flags & DRM_MASTER) && 
-		     !drm_is_current_master(file_priv) &&
-		     !drm_is_control_client(file_priv)))
-		return -EACCES;
-
-	/* Control clients must be explicitly allowed */
-	if (unlikely(!(flags & DRM_CONTROL_ALLOW) &&
-		     drm_is_control_client(file_priv)))
-		return -EACCES;
-
-	/* Render clients must be explicitly allowed */
-	if (unlikely(!(flags & DRM_RENDER_ALLOW) &&
-		     drm_is_render_client(file_priv)))
-		return -EACCES;
-
 	return 0;
 }
 EXPORT_SYMBOL(drm_ioctl_permit);