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| author | Christian König <christian.koenig@amd.com> | 2016-11-07 22:16:16 +0100 |
|---|---|---|
| committer | Sumit Semwal <sumit.semwal@linaro.org> | 2016-11-08 20:18:57 +0100 |
| commit | 06a66b5c77ede71f0601f4710284ca1076e673fa (patch) | |
| tree | 8685a3aa1169f00f2d9015b679e12dcc9b574090 /drivers/dma-buf | |
| parent | drm/ttm: fix ttm_bo_wait (diff) | |
| download | linux-06a66b5c77ede71f0601f4710284ca1076e673fa.tar.xz linux-06a66b5c77ede71f0601f4710284ca1076e673fa.zip | |
reservation: revert "wait only with non-zero timeout specified (v3)" v2
Reverts commit fb8b7d2b9d80
("reservation: wait only with non-zero timeout specified (v3)")
Otherwise signaling might never be activated on the fences. This can
result in infinite waiting with hardware which has unreliable interrupts.
v2: still return one when the timeout is zero and we don't have any fences.
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Chunming Zhou <david1.zhou@amd.com> (v1)
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: Sumit Semwal <sumit.semwal@linaro.org>
[sumits: fix checkpatch warnings]
Link: http://patchwork.freedesktop.org/patch/msgid/1478553376-18575-4-git-send-email-alexander.deucher@amd.com
Diffstat (limited to 'drivers/dma-buf')
| -rw-r--r-- | drivers/dma-buf/reservation.c | 5 |
1 files changed, 1 insertions, 4 deletions
diff --git a/drivers/dma-buf/reservation.c b/drivers/dma-buf/reservation.c index 7ed56f3edfb7..393817e849ed 100644 --- a/drivers/dma-buf/reservation.c +++ b/drivers/dma-buf/reservation.c @@ -370,10 +370,7 @@ long reservation_object_wait_timeout_rcu(struct reservation_object *obj, { struct dma_fence *fence; unsigned seq, shared_count, i = 0; - long ret = timeout; - - if (!timeout) - return reservation_object_test_signaled_rcu(obj, wait_all); + long ret = timeout ? timeout : 1; retry: fence = NULL; |