1DMA_BUF_KUNMAP(9)        Device drivers infrastructure       DMA_BUF_KUNMAP(9)
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NAME

6       dma_buf_kunmap - Unmap a page obtained by dma_buf_kmap.
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SYNOPSIS

9       void dma_buf_kunmap(struct dma_buf * dmabuf, unsigned long page_num,
10                           void * vaddr);
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ARGUMENTS

13       dmabuf
14           [in] buffer to unmap page from.
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16       page_num
17           [in] page in PAGE_SIZE units to unmap.
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19       vaddr
20           [in] kernel space pointer obtained from dma_buf_kmap.
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DESCRIPTION

23       This call must always succeed.
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26Kernel Hackers Manual 2.6.         June 2019                 DMA_BUF_KUNMAP(9)
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