[PATCH 12/13] drm/virtio: drop DRM_AUTH usage from the driver

[Emil Velikov <emil.l.velikov@gmail.com>]

From: Emil Velikov <emil.velikov@collabora.com>

The authentication can be circumvented, by design, by using the render
node.

From the driver POV there is no distinction between primary and render
nodes, thus we can drop the token.

Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: virtualization@lists.linux-foundation.org
Cc: David Airlie <airlied@linux.ie>
Cc: Daniel Vetter <daniel@ffwll.ch>
Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
---
 drivers/gpu/drm/virtio/virtgpu_ioctl.c | 18 +++++++++---------
 1 file changed, 9 insertions(+), 9 deletions(-)

diff --git a/drivers/gpu/drm/virtio/virtgpu_ioctl.c b/drivers/gpu/drm/virtio/virtgpu_ioctl.c
index 949a264985fc..e72626faba52 100644
--- a/drivers/gpu/drm/virtio/virtgpu_ioctl.c
+++ b/drivers/gpu/drm/virtio/virtgpu_ioctl.c
@@ -553,34 +553,34 @@ static int virtio_gpu_get_caps_ioctl(struct drm_device *dev,
 
 struct drm_ioctl_desc virtio_gpu_ioctls[DRM_VIRTIO_NUM_IOCTLS] = {
 	DRM_IOCTL_DEF_DRV(VIRTGPU_MAP, virtio_gpu_map_ioctl,
-			  DRM_AUTH | DRM_UNLOCKED | DRM_RENDER_ALLOW),
+			  DRM_UNLOCKED | DRM_RENDER_ALLOW),
 
 	DRM_IOCTL_DEF_DRV(VIRTGPU_EXECBUFFER, virtio_gpu_execbuffer_ioctl,
-			  DRM_AUTH | DRM_UNLOCKED | DRM_RENDER_ALLOW),
+			  DRM_UNLOCKED | DRM_RENDER_ALLOW),
 
 	DRM_IOCTL_DEF_DRV(VIRTGPU_GETPARAM, virtio_gpu_getparam_ioctl,
-			  DRM_AUTH | DRM_UNLOCKED | DRM_RENDER_ALLOW),
+			  DRM_UNLOCKED | DRM_RENDER_ALLOW),
 
 	DRM_IOCTL_DEF_DRV(VIRTGPU_RESOURCE_CREATE,
 			  virtio_gpu_resource_create_ioctl,
-			  DRM_AUTH | DRM_UNLOCKED | DRM_RENDER_ALLOW),
+			  DRM_UNLOCKED | DRM_RENDER_ALLOW),
 
 	DRM_IOCTL_DEF_DRV(VIRTGPU_RESOURCE_INFO, virtio_gpu_resource_info_ioctl,
-			  DRM_AUTH | DRM_UNLOCKED | DRM_RENDER_ALLOW),
+			  DRM_UNLOCKED | DRM_RENDER_ALLOW),
 
 	/* make transfer async to the main ring? - no sure, can we
 	 * thread these in the underlying GL
 	 */
 	DRM_IOCTL_DEF_DRV(VIRTGPU_TRANSFER_FROM_HOST,
 			  virtio_gpu_transfer_from_host_ioctl,
-			  DRM_AUTH | DRM_UNLOCKED | DRM_RENDER_ALLOW),
+			  DRM_UNLOCKED | DRM_RENDER_ALLOW),
 	DRM_IOCTL_DEF_DRV(VIRTGPU_TRANSFER_TO_HOST,
 			  virtio_gpu_transfer_to_host_ioctl,
-			  DRM_AUTH | DRM_UNLOCKED | DRM_RENDER_ALLOW),
+			  DRM_UNLOCKED | DRM_RENDER_ALLOW),
 
 	DRM_IOCTL_DEF_DRV(VIRTGPU_WAIT, virtio_gpu_wait_ioctl,
-			  DRM_AUTH | DRM_UNLOCKED | DRM_RENDER_ALLOW),
+			  DRM_UNLOCKED | DRM_RENDER_ALLOW),
 
 	DRM_IOCTL_DEF_DRV(VIRTGPU_GET_CAPS, virtio_gpu_get_caps_ioctl,
-			  DRM_AUTH | DRM_UNLOCKED | DRM_RENDER_ALLOW),
+			  DRM_UNLOCKED | DRM_RENDER_ALLOW),
 };
-- 
2.21.0