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Commit 98a6dd90 authored by Christian König's avatar Christian König Committed by Sumit Semwal
Browse files

drm/ttm: fix ttm_bo_wait 



reservation_object_wait_timeout_rcu() should enable signaling even with a
zero timeout, but ttm_bo_wait() can also be called from atomic context and
then it is not a good idea to do this.

Reviewed-by: default avatarAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: default avatarChristian König <christian.koenig@amd.com>
Reviewed-by: default avatarGustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: default avatarSumit Semwal <sumit.semwal@linaro.org>
  [sumits: fix checkpatch warnings]
Link: http://patchwork.freedesktop.org/patch/msgid/1478553376-18575-3-git-send-email-alexander.deucher@amd.com
parent 698c0f7f

drivers/gpu/drm/ttm/ttm_bo.c

+8 −1
Original line number Diff line number Diff line
@@ -1611,7 +1611,14 @@ EXPORT_SYMBOL(ttm_bo_unmap_virtual); 
int ttm_bo_wait(struct ttm_buffer_object *bo,

		bool interruptible, bool no_wait)

{

	long timeout = no_wait ? 0 : 15 * HZ;

	long timeout = 15 * HZ;



	if (no_wait) {

		if (reservation_object_test_signaled_rcu(bo->resv, true))

			return 0;

		else

			return -EBUSY;

	}



	timeout = reservation_object_wait_timeout_rcu(bo->resv, true,

						      interruptible, timeout);