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| author | David S. Miller | 2017-08-10 21:09:13 +0200 |
|---|---|---|
| committer | David S. Miller | 2017-08-10 21:09:13 +0200 |
| commit | 2f7043a37708110aa98262b91702da6bc32e17b6 (patch) | |
| tree | de0525dae8420a56f9a00def631ccc0108d9d091 /drivers/dma-buf/sync_file.c | |
| parent | sparc64: Revert 16GB huge page support. (diff) | |
| parent | Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net (diff) | |
| download | kernel-qcow2-linux-2f7043a37708110aa98262b91702da6bc32e17b6.tar.gz kernel-qcow2-linux-2f7043a37708110aa98262b91702da6bc32e17b6.tar.xz kernel-qcow2-linux-2f7043a37708110aa98262b91702da6bc32e17b6.zip | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc
Diffstat (limited to 'drivers/dma-buf/sync_file.c')
| -rw-r--r-- | drivers/dma-buf/sync_file.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/dma-buf/sync_file.c b/drivers/dma-buf/sync_file.c index 545e2c5c4815..d7e219d2669d 100644 --- a/drivers/dma-buf/sync_file.c +++ b/drivers/dma-buf/sync_file.c @@ -391,7 +391,13 @@ static void sync_fill_fence_info(struct dma_fence *fence, sizeof(info->driver_name)); info->status = dma_fence_get_status(fence); - info->timestamp_ns = ktime_to_ns(fence->timestamp); + while (test_bit(DMA_FENCE_FLAG_SIGNALED_BIT, &fence->flags) && + !test_bit(DMA_FENCE_FLAG_TIMESTAMP_BIT, &fence->flags)) + cpu_relax(); + info->timestamp_ns = + test_bit(DMA_FENCE_FLAG_TIMESTAMP_BIT, &fence->flags) ? + ktime_to_ns(fence->timestamp) : + ktime_set(0, 0); } static long sync_file_ioctl_fence_info(struct sync_file *sync_file, |