DMA_BUF_KUNMAP - Online Linux Manual PageSection : 9
Updated : June 2018
Source : Kernel Hackers Manual 2​.6​.
Note : Device drivers infrastructure

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NAMEdma_buf_kunmap − Unmap a page obtained by dma_buf_kmap​.

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SYNOPSISvoid dma_buf_kunmap(struct dma_buf * dmabuf, unsigned long page_num, void * vaddr);

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ARGUMENTSdmabuf [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​.

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DESCRIPTIONThis call must always succeed​.

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