DMA_BUF_KUNMAP(9) Device drivers infrastructure DMA_BUF_KUNMAP(9)

NAME dma_buf_kunmap - Unmap a page obtained by dma_buf_kmap.

SYNOPSIS void dma_buf_kunmap(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.

DESCRIPTION This call must always succeed.

COPYRIGHT Kernel Hackers Manual 2.6. September 2014 DMA_BUF_KUNMAP(9)