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Commit 12c4727e authored by Sumit Semwal's avatar Sumit Semwal
Browse files

dma-buf: minor documentation fixes. 



Some minor inline documentation fixes for gaps resulting from new patches.

Signed-off-by: default avatarSumit Semwal <sumit.semwal@ti.com>
Signed-off-by: default avatarSumit Semwal <sumit.semwal@linaro.org>
parent 98f86c9e

drivers/base/dma-buf.c

+5 −4
Original line number Diff line number Diff line
@@ -429,7 +429,7 @@ EXPORT_SYMBOL_GPL(dma_buf_kunmap); 


/**

 * dma_buf_mmap - Setup up a userspace mmap with the given vma

 * @dma_buf:	[in]	buffer that should back the vma

 * @dmabuf:	[in]	buffer that should back the vma

 * @vma:	[in]	vma for the mmap

 * @pgoff:	[in]	offset in pages where this mmap should start within the

 * 			dma-buf buffer.
@@ -470,8 +470,9 @@ int dma_buf_mmap(struct dma_buf *dmabuf, struct vm_area_struct *vma, 
EXPORT_SYMBOL_GPL(dma_buf_mmap);



/**

 * dma_buf_vmap - Create virtual mapping for the buffer object into kernel address space. Same restrictions as for vmap and friends apply.

 * @dma_buf:	[in]	buffer to vmap

 * dma_buf_vmap - Create virtual mapping for the buffer object into kernel

 * address space. Same restrictions as for vmap and friends apply.

 * @dmabuf:	[in]	buffer to vmap

 *

 * This call may fail due to lack of virtual mapping address space.

 * These calls are optional in drivers. The intended use for them
@@ -491,7 +492,7 @@ EXPORT_SYMBOL_GPL(dma_buf_vmap); 


/**

 * dma_buf_vunmap - Unmap a vmap obtained by dma_buf_vmap.

 * @dma_buf:	[in]	buffer to vmap

 * @dmabuf:	[in]	buffer to vunmap

 */

void dma_buf_vunmap(struct dma_buf *dmabuf, void *vaddr)

{

include/linux/dma-buf.h

+3 −0
Original line number Diff line number Diff line
@@ -65,6 +65,9 @@ struct dma_buf_attachment; 
 * 	  mapping needs to be coherent - if the exporter doesn't directly

 * 	  support this, it needs to fake coherency by shooting down any ptes

 * 	  when transitioning away from the cpu domain.

 * @vmap: [optional] creates a virtual mapping for the buffer into kernel

 *	  address space. Same restrictions as for vmap and friends apply.

 * @vunmap: [optional] unmaps a vmap from the buffer

 */

struct dma_buf_ops {

	int (*attach)(struct dma_buf *, struct device *,