From d6bd3a39f7c6ebad49c261c3d458df974c880758 Mon Sep 17 00:00:00 2001 From: Rolf Eike Beer Date: Fri, 29 Sep 2006 01:59:48 -0700 Subject: [PATCH] Move valid_dma_direction() from x86_64 to generic code As suggested by Muli Ben-Yehuda this function is moved to generic code as may be useful for all archs. [akpm@osdl.org: fix] Signed-off-by: Rolf Eike Beer Cc: Muli Ben-Yehuda Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/dma-mapping.h | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'include/linux/dma-mapping.h') diff --git a/include/linux/dma-mapping.h b/include/linux/dma-mapping.h index 635690cf3e3d..ff203c465fed 100644 --- a/include/linux/dma-mapping.h +++ b/include/linux/dma-mapping.h @@ -24,6 +24,13 @@ enum dma_data_direction { #define DMA_28BIT_MASK 0x000000000fffffffULL #define DMA_24BIT_MASK 0x0000000000ffffffULL +static inline int valid_dma_direction(int dma_direction) +{ + return ((dma_direction == DMA_BIDIRECTIONAL) || + (dma_direction == DMA_TO_DEVICE) || + (dma_direction == DMA_FROM_DEVICE)); +} + #include /* Backwards compat, remove in 2.7.x */ -- cgit v1.2.3-59-g8ed1b