Commit 179f158c authored Dec 19, 2014 by Daniel Vetter

drm: Ensure universal_planes is set for atomic



Atomic doesn't really work without universal planes anyway. But make
sure that evil userspace doesn't pull the kernel over the table
because we didn't consider a cornercase that just doesn't make sense,
just for safety.

v2: Just force ->universal_planes to the same value to avoid imposing
restrictions on userspace.

Cc: Rob Clark <robdclark@gmail.com>
Reviewed-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>

parent a97df1cc

drivers/gpu/drm/drm_ioctl.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -355,6 +355,7 @@ drm_setclientcap(struct drm_device dev, void data, struct drm_file *file_priv)
		if (req->value > 1)
		return -EINVAL;
		file_priv->atomic = req->value;
		file_priv->universal_planes = req->value;
		break;
		default:
		return -EINVAL;