dma-buf: minor documentation fixes.

Some minor inline documentation fixes for gaps resulting from new patches.
Signed-off-by: NSumit Semwal <sumit.semwal@ti.com>
Signed-off-by: NSumit Semwal <sumit.semwal@linaro.org>

drivers/base/dma-buf.c

@@ -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

@@ -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 *,