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| author | Andrew Morton <akpm@linux-foundation.org> | 2007-10-18 03:05:07 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-10-18 14:37:21 -0700 |
| commit | 8f286c33f1e838d631f4a3260b33efce4bc5973c (patch) | |
| tree | adf48bc9faabd41ddff8609f9c7de86373ccce11 /include/linux/dma-mapping.h | |
| parent | 34c6538413e5648b63cb785add509f500b3a7b11 (diff) | |
| download | lwn-8f286c33f1e838d631f4a3260b33efce4bc5973c.tar.gz lwn-8f286c33f1e838d631f4a3260b33efce4bc5973c.zip | |
stop using DMA_xxBIT_MASK
Now that we have DMA_BIT_MASK(), these macros are pointless.
Cc: Jeremy Fitzhardinge <jeremy@goop.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/dma-mapping.h')
| -rw-r--r-- | include/linux/dma-mapping.h | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/include/linux/dma-mapping.h b/include/linux/dma-mapping.h index 29b028597dcd..101a2d4636be 100644 --- a/include/linux/dma-mapping.h +++ b/include/linux/dma-mapping.h @@ -13,9 +13,15 @@ enum dma_data_direction { DMA_NONE = 3, }; -#define DMA_BIT_MASK(n) ((1ULL<<(n))-1) +#define DMA_BIT_MASK(n) (((n) == 64) ? ~0ULL : ((1ULL<<(n))-1)) -#define DMA_64BIT_MASK (~0ULL) +/* + * NOTE: do not use the below macros in new code and do not add new definitions + * here. + * + * Instead, just open-code DMA_BIT_MASK(n) within your driver + */ +#define DMA_64BIT_MASK DMA_BIT_MASK(64) #define DMA_48BIT_MASK DMA_BIT_MASK(48) #define DMA_47BIT_MASK DMA_BIT_MASK(47) #define DMA_40BIT_MASK DMA_BIT_MASK(40) |