reservations have an optimized fastpath that bypasses dma_fence_wait(), make sure we still catch all dependencies in lockdep. To avoid lockdep complaining about recursion on the fake dma_fence_wait lock we use the dma_fence_might_sleep annotation. Cc: Sumit Semwal <sumit.semwal@xxxxxxxxxx> Cc: linux-media@xxxxxxxxxxxxxxx Cc: linaro-mm-sig@xxxxxxxxxxxxxxxx Signed-off-by: Daniel Vetter <daniel.vetter@xxxxxxxx> --- drivers/dma-buf/reservation.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/dma-buf/reservation.c b/drivers/dma-buf/reservation.c index c1618335ca99..599b88c75cd5 100644 --- a/drivers/dma-buf/reservation.c +++ b/drivers/dma-buf/reservation.c @@ -429,6 +429,8 @@ long reservation_object_wait_timeout_rcu(struct reservation_object *obj, long ret = timeout ? timeout : 1; int i; + dma_fence_might_wait(); + retry: shared_count = 0; seq = read_seqcount_begin(&obj->seq); -- 2.19.1 _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
