linux-kernel - [PATCH 3.2 77/94] alpha: add io{read,write}{16,32}be functions

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Date:	Mon, 04 Aug 2014 17:48:32 +0100
From:	Ben Hutchings <ben@...adent.org.uk>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org
CC:	akpm@...ux-foundation.org, "Michael Cree" <mcree@...on.net.nz>,
	"Raúl Porcel" <armin76@...too.org>,
	"Matt Turner" <mattst88@...il.com>
Subject: [PATCH 3.2 77/94] alpha: add io{read,write}{16,32}be functions

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

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

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

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>
Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
---
 arch/alpha/include/asm/io.h | 5 +++++
 1 file changed, 5 insertions(+)

--- a/arch/alpha/include/asm/io.h
+++ b/arch/alpha/include/asm/io.h
@@ -490,6 +490,11 @@ extern inline void writeq(u64 b, volatil
 }
 #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

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