Commit d61a0686 authored Jul 04, 2011 by Ben Skeggs Committed by Dave Airlie Jul 07, 2011

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 <bskeggs@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

parent ccd6895d

drivers/gpu/drm/drm_crtc.c

+0 −3

Original line number	Diff line number	Diff line
		@@ -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;