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| author | Daniel Vetter <daniel.vetter@ffwll.ch> | 2018-05-03 17:25:51 +0300 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2018-07-02 11:20:53 +0300 |
| commit | 796422f227eef662256dcf74f609abd48cfd1cc9 (patch) | |
| tree | 8cb0876de40a565ea0d78372005d3319148daf34 /drivers/dma-buf/dma-fence.c | |
| parent | c701317a3eb8c012364a8d468f20eabf6df1ad77 (diff) | |
| download | linux-796422f227eef662256dcf74f609abd48cfd1cc9.tar.xz | |
dma-fence: Allow wait_any_timeout for all fences
When this was introduced in
commit a519435a96597d8cd96123246fea4ae5a6c90b02
Author: Christian König <christian.koenig@amd.com>
Date: Tue Oct 20 16:34:16 2015 +0200
dma-buf/fence: add fence_wait_any_timeout function v2
there was a restriction added that this only works if the dma-fence
uses the dma_fence_default_wait hook. Which works for amdgpu, which is
the only caller. Well, until you share some buffers with e.g. i915,
then you get an -EINVAL.
But there's really no reason for this, because all drivers must
support callbacks. The special ->wait hook is only as an optimization;
if the driver needs to create a worker thread for an active callback,
then it can avoid to do that if it knows that there's a process
context available already. So ->wait is just an optimization, just
using the logic in dma_fence_default_wait() should work for all
drivers.
Let's remove this restriction.
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Cc: Gustavo Padovan <gustavo@padovan.org>
Cc: linux-media@vger.kernel.org
Cc: linaro-mm-sig@lists.linaro.org
Cc: Christian König <christian.koenig@amd.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180503142603.28513-4-daniel.vetter@ffwll.ch
Diffstat (limited to 'drivers/dma-buf/dma-fence.c')
| -rw-r--r-- | drivers/dma-buf/dma-fence.c | 5 |
1 files changed, 0 insertions, 5 deletions
diff --git a/drivers/dma-buf/dma-fence.c b/drivers/dma-buf/dma-fence.c index dd01a1720be9..ea343f992112 100644 --- a/drivers/dma-buf/dma-fence.c +++ b/drivers/dma-buf/dma-fence.c @@ -497,11 +497,6 @@ dma_fence_wait_any_timeout(struct dma_fence **fences, uint32_t count, for (i = 0; i < count; ++i) { struct dma_fence *fence = fences[i]; - if (fence->ops->wait != dma_fence_default_wait) { - ret = -EINVAL; - goto fence_rm_cb; - } - cb[i].task = current; if (dma_fence_add_callback(fence, &cb[i].base, dma_fence_default_wait_cb)) { |