| Message ID | 20201211155843.3348718-3-daniel.vetter@ffwll.ch |
|---|---|
| State | Superseded |
| Headers | show |
| Series | [1/4] dma-buf: Remove kmap kerneldoc vestiges | expand |
diff --git a/drivers/dma-buf/dma-buf.c b/drivers/dma-buf/dma-buf.c index e1fa6c6f02c4..00d5afe904cc 100644 --- a/drivers/dma-buf/dma-buf.c +++ b/drivers/dma-buf/dma-buf.c @@ -1118,6 +1118,8 @@ int dma_buf_begin_cpu_access(struct dma_buf *dmabuf, if (WARN_ON(!dmabuf)) return -EINVAL; + might_lock(&dma_buf->resv.lock); + if (dmabuf->ops->begin_cpu_access) ret = dmabuf->ops->begin_cpu_access(dmabuf, direction); @@ -1151,6 +1153,8 @@ int dma_buf_end_cpu_access(struct dma_buf *dmabuf, WARN_ON(!dmabuf); + might_lock(&dma_buf->resv.lock); + if (dmabuf->ops->end_cpu_access) ret = dmabuf->ops->end_cpu_access(dmabuf, direction);
At least amdgpu and i915 do, so lets just document this as the rule. Signed-off-by: Daniel Vetter <daniel.vetter@intel.com> Cc: Thomas Zimmermann <tzimmermann@suse.de> Cc: Sumit Semwal <sumit.semwal@linaro.org> Cc: "Christian König" <christian.koenig@amd.com> Cc: linux-media@vger.kernel.org Cc: linaro-mm-sig@lists.linaro.org --- drivers/dma-buf/dma-buf.c | 4 ++++ 1 file changed, 4 insertions(+)