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0001 /* SPDX-License-Identifier: GPL-2.0 */ 0002 #ifndef _LINUX_DMA_DIRECTION_H 0003 #define _LINUX_DMA_DIRECTION_H 0004 0005 enum dma_data_direction { 0006 DMA_BIDIRECTIONAL = 0, 0007 DMA_TO_DEVICE = 1, 0008 DMA_FROM_DEVICE = 2, 0009 DMA_NONE = 3, 0010 }; 0011 0012 static inline int valid_dma_direction(enum dma_data_direction dir) 0013 { 0014 return dir == DMA_BIDIRECTIONAL || dir == DMA_TO_DEVICE || 0015 dir == DMA_FROM_DEVICE; 0016 } 0017 0018 #endif /* _LINUX_DMA_DIRECTION_H */
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