dma_buf_unmap_attachment(9) centos man page | unix.com

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
Kernel Hackers Manual 3.10					     June 2014						   DMA_BUF_UNMAP_ATTACH(9)