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dma-buf: Update docs for SYNC ioctl

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Just a bit of wording polish plus mentioning that it can fail and must
be restarted.

Requested by Sumit.

v2: Fix them typos (Hans).

Cc: Chris Wilson <[email protected]>
Cc: Tiago Vignatti <[email protected]>
Cc: Stéphane Marchesin <[email protected]>
Cc: David Herrmann <[email protected]>
Cc: Sumit Semwal <[email protected]>
Cc: Daniel Vetter <[email protected]>
CC: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: Hans Verkuil <[email protected]>
Acked-by: Sumit Semwal <[email protected]>
Acked-by: Hans Verkuil <[email protected]>
Signed-off-by: Daniel Vetter <[email protected]>
This commit is contained in:
Daniel Vetter 2016-03-21 08:24:22 +01:00
commit 87e332d56b
2 changed files with 7 additions and 6 deletions
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2
drivers/dma-buf/dma-buf.c
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@ -612,7 +612,7 @@ EXPORT_SYMBOL_GPL(dma_buf_begin_cpu_access);
* @dmabuf: [in] buffer to complete cpu access for.
* @direction: [in] length of range for cpu access.
*
* This call must always succeed.
* Can return negative error values, returns 0 on success.
*/
int dma_buf_end_cpu_access(struct dma_buf *dmabuf,
enum dma_data_direction direction)