From 8f286c33f1e838d631f4a3260b33efce4bc5973c Mon Sep 17 00:00:00 2001
From: Andrew Morton <akpm@linux-foundation.org>
Date: Thu, 18 Oct 2007 03:05:07 -0700
Subject: [PATCH] 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>
---
include/linux/dma-mapping.h | 10 ++++++++--
1 file changed, 8 insertions(+), 2 deletions(-)
diff --git a/include/linux/dma-mapping.h b/include/linux/dma-mapping.h
index 29b028597dcd4..101a2d4636bef 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)
--
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