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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¶
May 2018 | Kernel Hackers Manual 3.16 |