[PATCH] x86: provide readq()/writeq() on 32-bit too, cleanup

From: Ingo Molnar
Date: Sun Nov 30 2008 - 03:33:55 EST


Impact: cleanup

Signed-off-by: Ingo Molnar <mingo@xxxxxxx>
---
arch/x86/include/asm/io.h | 17 +++++++----------
1 files changed, 7 insertions(+), 10 deletions(-)

diff --git a/arch/x86/include/asm/io.h b/arch/x86/include/asm/io.h
index 2594644..3ccfaf6 100644
--- a/arch/x86/include/asm/io.h
+++ b/arch/x86/include/asm/io.h
@@ -55,21 +55,17 @@ build_mmio_write(__writeq, "q", unsigned long, "r", )
#define __raw_readq __readq
#define __raw_writeq writeq

-/* Let people know we have them */
-#define readq readq
-#define writeq writeq
-
#else /* CONFIG_X86_32 from here */

static inline __u64 readq(const volatile void __iomem *addr)
{
const volatile u32 __iomem *p = addr;
- u32 l, h;
+ u32 low, high;

- l = readl(p);
- h = readl(p + 1);
+ low = readl(p);
+ high = readl(p + 1);

- return l + ((u64)h << 32);
+ return low + ((u64)high << 32);
}

static inline void writeq(__u64 val, volatile void __iomem *addr)
@@ -78,11 +74,12 @@ static inline void writeq(__u64 val, volatile void __iomem *addr)
writel(val >> 32, addr+4);
}

+#endif
+
+/* Let people know that we have them */
#define readq readq
#define writeq writeq

-#endif
-
extern int iommu_bio_merge;

#ifdef CONFIG_X86_32
--
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