linux-kernel - [PATCH 3.4 45/45] alpha: add io{read,write}{16,32}be functions

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Message-Id: <1411439507-30391-45-git-send-email-lizf@kernel.org>
Date:	Tue, 23 Sep 2014 10:31:47 +0800
From:	Zefan Li <lizf@...nel.org>
To:	stable@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, Michael Cree <mcree@...on.net.nz>,
	Matt Turner <mattst88@...il.com>,
	Guenter Roeck <linux@...ck-us.net>,
	Zefan Li <lizefan@...wei.com>
Subject: [PATCH 3.4 45/45] alpha: add io{read,write}{16,32}be functions

From: Michael Cree <mcree@...on.net.nz>

3.4.104-rc1 review patch.  If anyone has any objections, please let me know.

------------------

commit 25534eb7707821b796fd84f7115367e02f36aa60 upstream.

These functions are used in some PCI drivers with big-endian
MMIO space.

Admittedly it is almost certain that no one this side of the
Moon would use such a card in an Alpha but it does get us
closer to being able to build allyesconfig or allmodconfig,
and it enables the Debian default generic config to build.

Tested-by: Raúl Porcel <armin76@...too.org>
Signed-off-by: Michael Cree <mcree@...on.net.nz>
Signed-off-by: Matt Turner <mattst88@...il.com>
Cc: Guenter Roeck <linux@...ck-us.net>
Signed-off-by: Zefan Li <lizefan@...wei.com>
---
 arch/alpha/include/asm/io.h |    5 +++++
 1 file changed, 5 insertions(+)

diff --git a/arch/alpha/include/asm/io.h b/arch/alpha/include/asm/io.h
index 7a3d38d..5ebab58 100644
--- a/arch/alpha/include/asm/io.h
+++ b/arch/alpha/include/asm/io.h
@@ -489,6 +489,11 @@ extern inline void writeq(u64 b, volatile void __iomem *addr)
 }
 #endif
 
+#define ioread16be(p) be16_to_cpu(ioread16(p))
+#define ioread32be(p) be32_to_cpu(ioread32(p))
+#define iowrite16be(v,p) iowrite16(cpu_to_be16(v), (p))
+#define iowrite32be(v,p) iowrite32(cpu_to_be32(v), (p))
+
 #define inb_p		inb
 #define inw_p		inw
 #define inl_p		inl
-- 
1.7.9.5

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