drm/kms: allow drm_mode_group with no objects

Sometimes we could be controlling a device (such as an NVIDIA Tesla) that has no crtcs/encoders/connectors. One could argue that the driver should unset DRIVER_MODESET in this case, but that changes a whole heap of the DRM's other behaviours, and it's much easier to just be a modesetting driver without any outputs. Signed-off-by: Ben Skeggs <[email protected]> Signed-off-by: Dave Airlie <[email protected]>
RyanHsu · Jul 7, 2011 · d61a068 · d61a068
1 parent ccd6895
commit d61a068
Showing 1 changed file with 0 additions and 3 deletions.
diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c
@@ -886,9 +886,6 @@ int drm_mode_group_init(struct drm_device *dev, struct drm_mode_group *group)
 	total_objects += dev->mode_config.num_connector;
 	total_objects += dev->mode_config.num_encoder;
 
-	if (total_objects == 0)
-		return -EINVAL;
-
 	group->id_list = kzalloc(total_objects * sizeof(uint32_t), GFP_KERNEL);
 	if (!group->id_list)
 		return -ENOMEM;