dma-buf: add dma_data_direction to unmap dma_buf_op
Some exporters may use DMA map/unmap APIs in dma-buf ops, which require enum dma_data_direction for both map and unmap operations. Thus, the unmap dma_buf_op also needs to have enum dma_data_direction as a parameter. Reported-by: NTomasz Stanislawski <t.stanislaws@samsung.com> Signed-off-by: NSumit Semwal <sumit.semwal@ti.com> Reviewed-by: NDaniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: NSumit Semwal <sumit.semwal@linaro.org>
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