linux-stable/include/linux/dma-direction.h
Christoph Hellwig db4268f8c5 dma-mapping: move valid_dma_direction to dma-direction.h
Move the valid_dma_direction helper to a more suitable header, and
clean it up to use the proper enum as well as removing pointless braces.

Signed-off-by: Christoph Hellwig <hch@lst.de>
2020-09-25 06:12:25 +02:00

18 lines
407 B
C

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _LINUX_DMA_DIRECTION_H
#define _LINUX_DMA_DIRECTION_H
enum dma_data_direction {
DMA_BIDIRECTIONAL = 0,
DMA_TO_DEVICE = 1,
DMA_FROM_DEVICE = 2,
DMA_NONE = 3,
};
static inline int valid_dma_direction(enum dma_data_direction dir)
{
return dir == DMA_BIDIRECTIONAL || dir == DMA_TO_DEVICE ||
dir == DMA_FROM_DEVICE;
}
#endif /* _LINUX_DMA_DIRECTION_H */