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authorBorislav Petkov <bbpetkov@yahoo.de>2007-10-18 14:05:06 +0400
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-10-19 01:37:21 +0400
commit34c6538413e5648b63cb785add509f500b3a7b11 (patch)
tree3f2e1c4fe134fa123bf5047a640dee425be0a098 /include/linux/dma-mapping.h
parent2c6221483169ddd4c04797cd7296ed4fe52fcdd7 (diff)
downloadlinux-34c6538413e5648b63cb785add509f500b3a7b11.tar.xz
unify DMA_..BIT_MASK definitions: v3.1
Remove redundant DMA_..BIT_MASK definitions across two drivers. The computation of the majority of the bitmasks is done by the compiler. The initial split of the patch touching each a different file got removed due to possible git bisect breakage. Signed-off-by: Borislav Petkov <bbpetkov@yahoo.de> Cc: Jeremy Fitzhardinge <jeremy@goop.org> Cc: Muli Ben-Yehuda <muli@il.ibm.com> Cc: Jeff Garzik <jeff@garzik.org> Cc: James Bottomley <James.Bottomley@steeleye.com> Reviewed-by: Satyam Sharma <satyam@infradead.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.h24
1 files changed, 14 insertions, 10 deletions
diff --git a/include/linux/dma-mapping.h b/include/linux/dma-mapping.h
index 0ebfafbd338c..29b028597dcd 100644
--- a/include/linux/dma-mapping.h
+++ b/include/linux/dma-mapping.h
@@ -13,16 +13,20 @@ enum dma_data_direction {
DMA_NONE = 3,
};
-#define DMA_64BIT_MASK 0xffffffffffffffffULL
-#define DMA_48BIT_MASK 0x0000ffffffffffffULL
-#define DMA_40BIT_MASK 0x000000ffffffffffULL
-#define DMA_39BIT_MASK 0x0000007fffffffffULL
-#define DMA_32BIT_MASK 0x00000000ffffffffULL
-#define DMA_31BIT_MASK 0x000000007fffffffULL
-#define DMA_30BIT_MASK 0x000000003fffffffULL
-#define DMA_29BIT_MASK 0x000000001fffffffULL
-#define DMA_28BIT_MASK 0x000000000fffffffULL
-#define DMA_24BIT_MASK 0x0000000000ffffffULL
+#define DMA_BIT_MASK(n) ((1ULL<<(n))-1)
+
+#define DMA_64BIT_MASK (~0ULL)
+#define DMA_48BIT_MASK DMA_BIT_MASK(48)
+#define DMA_47BIT_MASK DMA_BIT_MASK(47)
+#define DMA_40BIT_MASK DMA_BIT_MASK(40)
+#define DMA_39BIT_MASK DMA_BIT_MASK(39)
+#define DMA_35BIT_MASK DMA_BIT_MASK(35)
+#define DMA_32BIT_MASK DMA_BIT_MASK(32)
+#define DMA_31BIT_MASK DMA_BIT_MASK(31)
+#define DMA_30BIT_MASK DMA_BIT_MASK(30)
+#define DMA_29BIT_MASK DMA_BIT_MASK(29)
+#define DMA_28BIT_MASK DMA_BIT_MASK(28)
+#define DMA_24BIT_MASK DMA_BIT_MASK(24)
#define DMA_MASK_NONE 0x0ULL