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