Commit e147eae8 authored Jan 12, 2010 by Ben Skeggs

drm/nouveau: wait on fence after bo move if validating for another channel



Not an ideal solution, but it'll do for the moment for correctness.  We
need to come up with a nicer way to manage inter-channel sync, the hw
is unfortunately a little lacking in this area.

Should fix some resume corruption, as well as corruption that may be seen
while under memory pressure.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

parent 9855e584

drivers/gpu/drm/nouveau/nouveau_bo.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -469,6 +469,8 @@ nouveau_bo_move_accel_cleanup(struct nouveau_channel *chan,

		ret = ttm_bo_move_accel_cleanup(&nvbo->bo, fence, NULL,
		evict, no_wait, new_mem);
		if (nvbo->channel && nvbo->channel != chan)
		ret = nouveau_fence_wait(fence, NULL, false, false);
		nouveau_fence_unref((void *)&fence);
		return ret;
		}