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Query: dma_buf_kunmap_atomic

OS: centos

Section: 9

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DMA_BUF_KUNMAP_ATOMI(9) 				   Device drivers infrastructure				   DMA_BUF_KUNMAP_ATOMI(9)

NAME
       dma_buf_kunmap_atomic - Unmap a page obtained by dma_buf_kmap_atomic.

SYNOPSIS
       void dma_buf_kunmap_atomic(struct dma_buf * dmabuf, unsigned long page_num, void * vaddr);

ARGUMENTS
       dmabuf
	   [in] buffer to unmap page from.

       page_num
	   [in] page in PAGE_SIZE units to unmap.

       vaddr
	   [in] kernel space pointer obtained from dma_buf_kmap_atomic.

DESCRIPTION
       This call must always succeed.

COPYRIGHT
Kernel Hackers Manual 3.10					     June 2014						   DMA_BUF_KUNMAP_ATOMI(9)

centos man page for dma_buf_kunmap_atomic