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 2.6. April 2016 DMA_BUF_UNMAP_ATTACH(9)