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DMA_BUF_UNMAP_ATTACH(9) Device drivers infrastructure DMA_BUF_UNMAP_ATTACH(9)

NAME

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

SYNOPSIS

void dma_buf_unmap_attachment(struct dma_buf_attachment * attach, struct sg_table * sg_table, enum dma_data_direction direction);

ARGUMENTS

attach
[in] attachment to unmap buffer from
sg_table
[in] scatterlist info of the buffer to unmap
direction
[in] direction of DMA transfer

COPYRIGHT

February 2017 Kernel Hackers Manual 3.16