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| author |   Ingo Molnar <mingo@kernel.org> | 2021-12-13 10:48:46 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2021-12-13 10:48:46 +0100 |
| commit | 6773cc31a9bb5122fd5c288f73ca006ad20a6c17 (patch) | |
| tree | 730ec8bcc0a5ddd5030268bb3ffd4945d34728c1 /drivers/gpu/drm/drm_syncobj.c | |
| parent | futex: Fix additional regressions (diff) | |
| parent | Linux 5.16-rc5 (diff) | |
| download | linux-dev-6773cc31a9bb5122fd5c288f73ca006ad20a6c17.tar.xz linux-dev-6773cc31a9bb5122fd5c288f73ca006ad20a6c17.zip | |
Merge tag 'v5.16-rc5' into locking/core, to pick up fixes
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'drivers/gpu/drm/drm_syncobj.c')
| -rw-r--r-- | drivers/gpu/drm/drm_syncobj.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/drivers/gpu/drm/drm_syncobj.c b/drivers/gpu/drm/drm_syncobj.c index c9a9d74f338c..c313a5b4549c 100644 --- a/drivers/gpu/drm/drm_syncobj.c +++ b/drivers/gpu/drm/drm_syncobj.c @@ -404,8 +404,17 @@ int drm_syncobj_find_fence(struct drm_file *file_private, if (*fence) { ret = dma_fence_chain_find_seqno(fence, point); - if (!ret) + if (!ret) { + /* If the requested seqno is already signaled + * drm_syncobj_find_fence may return a NULL + * fence. To make sure the recipient gets + * signalled, use a new fence instead. + */ + if (!*fence) + *fence = dma_fence_get_stub(); + goto out; + } dma_fence_put(*fence); } else { ret = -EINVAL; |