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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

May 2024 Kernel Hackers Manual 2.6.