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. April 2016 DMA_BUF_KUNMAP(9)