1DMA_BUF_UNMAP_ATTACH(9)  Device drivers infrastructure DMA_BUF_UNMAP_ATTACH(9)
2
3
4

NAME

6       dma_buf_unmap_attachment - unmaps and decreases usecount of the
7       buffer;might deallocate the scatterlist associated. Is a wrapper for
8       unmap_dma_buf of dma_buf_ops.
9

SYNOPSIS

11       void dma_buf_unmap_attachment(struct dma_buf_attachment * attach,
12                                     struct sg_table * sg_table,
13                                     enum dma_data_direction direction);
14

ARGUMENTS

16       attach
17           [in] attachment to unmap buffer from
18
19       sg_table
20           [in] scatterlist info of the buffer to unmap
21
22       direction
23           [in] direction of DMA transfer
24

DESCRIPTION

26       This unmaps a DMA mapping for attached obtained by
27       dma_buf_map_attachment.
28

30Kernel Hackers Manual 3.10         June 2019           DMA_BUF_UNMAP_ATTACH(9)
Impressum