drm/msm: fix ->last_fence() after recover

It is no longer true that we discard all in-flight submits on recover
(these days we only discard the first one that hung).  After the first
re-submitted batch completes it would overwrite the fence with a correct
value, but there would be a window of time which showed all re-submitted
batches as already complete.

Signed-off-by: Rob Clark <robdclark@gmail.com>

diff --git a/drivers/gpu/drm/msm/adreno/adreno_gpu.c b/drivers/gpu/drm/msm/adreno/adreno_gpu.c
index 95aed37..1d5a714 100644 (file)
--- a/drivers/gpu/drm/msm/adreno/adreno_gpu.c
+++ b/drivers/gpu/drm/msm/adreno/adreno_gpu.c
@@ -120,8 +120,8 @@ void adreno_recover(struct msm_gpu *gpu)
        /* reset ringbuffer: */
        gpu->rb->cur = gpu->rb->start;
 
-       /* reset completed fence seqno, just discard anything pending: */
-       adreno_gpu->memptrs->fence = gpu->fctx->last_fence;
+       /* reset completed fence seqno: */
+       adreno_gpu->memptrs->fence = gpu->fctx->completed_fence;
        adreno_gpu->memptrs->rptr  = 0;
        adreno_gpu->memptrs->wptr  = 0;