table of contents
| DMA_BUF_END_CPU_ACCE(9) | Device drivers infrastructure | DMA_BUF_END_CPU_ACCE(9) |
NAME¶
dma_buf_end_cpu_access - Must be called after accessing a dma_buf from the cpu in the kernel context. Calls end_cpu_access to allow exporter-specific actions. Coherency is only guaranteed in the specified range for the specified access direction.
SYNOPSIS¶
int dma_buf_end_cpu_access(struct dma_buf * dmabuf, enum dma_data_direction direction);
ARGUMENTS¶
dmabuf
[in] buffer to complete cpu access for.
direction
[in] length of range for cpu access.
DESCRIPTION¶
This terminates CPU access started with dma_buf_begin_cpu_access.
Can return negative error values, returns 0 on success.
COPYRIGHT¶
| June 2024 | Kernel Hackers Manual 3.10 |