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 void dma_buf_end_cpu_access(struct dma_buf * dmabuf, size_t start, size_t len, enum dma_data_direction direction);
ARGUMENTS dmabuf [in] buffer to complete cpu access for.
start [in] start of range for cpu access.
len [in] length of range for cpu access.
direction [in] length of range for cpu access.
DESCRIPTION This call must always succeed.
COPYRIGHT Kernel Hackers Manual 2.6. July 2015 DMA_BUF_END_CPU_ACCE(9)