Man Page: dma_buf_end_cpu_access
Operating Environment: centos
Section: 9
DMA_BUF_END_CPU_ACCE(9) Device drivers infrastructure DMA_BUF_END_CPU_ACCE(9)NAMEdma_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.SYNOPSISvoid dma_buf_end_cpu_access(struct dma_buf * dmabuf, size_t start, size_t len, enum dma_data_direction direction);ARGUMENTSdmabuf [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.DESCRIPTIONThis call must always succeed.COPYRIGHTKernel Hackers Manual 3.10 June 2014 DMA_BUF_END_CPU_ACCE(9)
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