drm/vgem: create a render node for vgem

VGEM doesn't do anything modeset specific, so in a way exposing a
primary node is 'wrong'. At the same time, we extensively use if for
creating dumb buffers, fences, prime fd <> handle imports/exports.

To the point that we explicitly annotate the vgem fence ioctls as
DRM_RENDER_ALLOW and have an IGT test which opens the render node.

close(drm_open_driver_render(DRIVER_VGEM))

Better late than never, let's flip the switch.

Cc: David Airlie <airlied@linux.ie>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20181026120647.7528-1-emil.l.velikov@gmail.com

1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/gpu/drm/vgem/vgem_drv.c b/drivers/gpu/drm/vgem/vgem_drv.c
index f1f7ab9dcdbf..f1d1d9e2c82e 100644
--- a/drivers/gpu/drm/vgem/vgem_drv.c
+++ b/drivers/gpu/drm/vgem/vgem_drv.c
@@ -431,7 +431,8 @@ static void vgem_release(struct drm_device *dev)
 }
 
 static struct drm_driver vgem_driver = {
-        .driver_features                = DRIVER_GEM | DRIVER_PRIME,
+        .driver_features                = DRIVER_GEM | DRIVER_PRIME |
+                                          DRIVER_RENDER;
         .release                        = vgem_release,
         .open                           = vgem_open,
         .postclose                      = vgem_postclose,