table of contents
| 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
DESCRIPTION¶
This unmaps a DMA mapping for attached obtained by dma_buf_map_attachment.
COPYRIGHT¶
| June 2024 | Kernel Hackers Manual 3.10 |