From: Borislav Petkov <bbpetkov@yahoo.de>
To: linux-kernel@vger.kernel.org
Cc: Jeremy Fitzhardinge <jeremy@goop.org>
Subject: [PATCH 0/2] unify DMA_..BIT_MASK definitions: v1
Date: Tue, 18 Sep 2007 06:29:19 +0200 [thread overview]
Message-ID: <20070918042919.GA8998@gollum.tnic> (raw)
These patches remove redundant DMA_..BIT_MASK definitions across two drivers.
In this version of the patches, the computation of the bitmasks is done by
the compiler.
Signed-off-by: Borislav Petkov <bbpetkov@yahoo.de>
Cc: Jeremy Fitzhardinge <jeremy@goop.org>
--
Index: 23-rc6/include/linux/dma-mapping.h
===================================================================
--- 23-rc6/include/linux/dma-mapping.h.orig 2007-09-17 17:48:20.000000000 +0200
+++ 23-rc6/include/linux/dma-mapping.h 2007-09-18 06:12:33.000000000 +0200
@@ -13,16 +13,19 @@
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 DMA_BIT_MASK(64)
+#define DMA_48BIT_MASK DMA_BIT_MASK(48)
+#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)
static inline int valid_dma_direction(int dma_direction)
{
--
Regards/Gruß,
Boris.
next reply other threads:[~2007-09-18 4:30 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-09-18 4:29 Borislav Petkov [this message]
2007-09-18 5:58 ` Muli Ben-Yehuda
2007-09-18 6:01 ` Jeremy Fitzhardinge
2007-09-18 6:08 ` Borislav Petkov
2007-09-18 6:16 ` Satyam Sharma
2007-09-18 6:34 ` Borislav Petkov
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