dma_buf_end_cpu_access(9) centos man page | unix.com

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 3.10					     June 2014						   DMA_BUF_END_CPU_ACCE(9)