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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

Can return negative error values, returns 0 on success.

COPYRIGHT

January 2017 Kernel Hackers Manual 4.8.