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 4.8.                 January 2017                   DMA_BUF_KUNMAP_ATOMI(9)