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author | Gioh Kim <gioh.kim@lge.com> | 2014-05-14 08:49:43 +0900 |
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committer | Sumit Semwal <sumit.semwal@linaro.org> | 2014-08-28 11:57:24 +0530 |
commit | a07b3b4508447682574cf18fdad23ed709365dd1 (patch) | |
tree | b7ecb29488fb820bc628cc2c273456de5c502a85 /Documentation | |
parent | f1bd473f95e02bc382d4dae94d7f82e2a455e05d (diff) | |
download | linux-a07b3b4508447682574cf18fdad23ed709365dd1.tar.bz2 |
Documentation/dma-buf-sharing.txt: update API descriptions
Update some descriptions for API arguments and descriptions.
Signed-off-by: Gioh Kim <gioh.kim@lge.com>
Signed-off-by: Sumit Semwal <sumit.semwal@linaro.org>
Diffstat (limited to 'Documentation')
-rw-r--r-- | Documentation/dma-buf-sharing.txt | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/Documentation/dma-buf-sharing.txt b/Documentation/dma-buf-sharing.txt index 67a4087d53f9..bb9753b635a3 100644 --- a/Documentation/dma-buf-sharing.txt +++ b/Documentation/dma-buf-sharing.txt @@ -56,10 +56,10 @@ The dma_buf buffer sharing API usage contains the following steps: size_t size, int flags, const char *exp_name) - If this succeeds, dma_buf_export allocates a dma_buf structure, and returns a - pointer to the same. It also associates an anonymous file with this buffer, - so it can be exported. On failure to allocate the dma_buf object, it returns - NULL. + If this succeeds, dma_buf_export_named allocates a dma_buf structure, and + returns a pointer to the same. It also associates an anonymous file with this + buffer, so it can be exported. On failure to allocate the dma_buf object, + it returns NULL. 'exp_name' is the name of exporter - to facilitate information while debugging. @@ -76,7 +76,7 @@ The dma_buf buffer sharing API usage contains the following steps: drivers and/or processes. Interface: - int dma_buf_fd(struct dma_buf *dmabuf) + int dma_buf_fd(struct dma_buf *dmabuf, int flags) This API installs an fd for the anonymous file associated with this buffer; returns either 'fd', or error. @@ -157,7 +157,9 @@ to request use of buffer for allocation. "dma_buf->ops->" indirection from the users of this interface. In struct dma_buf_ops, unmap_dma_buf is defined as - void (*unmap_dma_buf)(struct dma_buf_attachment *, struct sg_table *); + void (*unmap_dma_buf)(struct dma_buf_attachment *, + struct sg_table *, + enum dma_data_direction); unmap_dma_buf signifies the end-of-DMA for the attachment provided. Like map_dma_buf, this API also must be implemented by the exporter. |