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From: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
To: Arnd Bergmann <arnd@arndb.de>, Will Deacon <will.deacon@arm.com>,
	sparclinux@vger.kernel.org, linux-kernel@vger.kernel.org
Cc: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Subject: [PATCH] sparc: io_64.h: Replace io function-link macros
Date: Thu, 29 Jan 2015 15:52:02 +0100	[thread overview]
Message-ID: <1422543122-21956-1-git-send-email-ricardo.ribalda@gmail.com> (raw)

Function like macros cannot be assigned to function pointers. This patch
convert the function-like macros into object-macros, that the
precompiler will replace with the name of the final function.

With this patch this kind of code will work:

if (priv->mode_big_endian)
	priv.read = ioread32be;
else
	priv.read = ioread32;

Same approach has been taken on asm-generic/io.h

Reported-by: kbuild test robot <fengguang.wu@intel.com>
Fixes: 99082eab63449f9d spi/xilinx: Remove iowrite/ioread wrappers
Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
---
 arch/sparc/include/asm/io_64.h | 20 ++++++++++----------
 1 file changed, 10 insertions(+), 10 deletions(-)

diff --git a/arch/sparc/include/asm/io_64.h b/arch/sparc/include/asm/io_64.h
index 9b672be..50d4840 100644
--- a/arch/sparc/include/asm/io_64.h
+++ b/arch/sparc/include/asm/io_64.h
@@ -407,16 +407,16 @@ static inline void iounmap(volatile void __iomem *addr)
 {
 }
 
-#define ioread8(X)			readb(X)
-#define ioread16(X)			readw(X)
-#define ioread16be(X)			__raw_readw(X)
-#define ioread32(X)			readl(X)
-#define ioread32be(X)			__raw_readl(X)
-#define iowrite8(val,X)			writeb(val,X)
-#define iowrite16(val,X)		writew(val,X)
-#define iowrite16be(val,X)		__raw_writew(val,X)
-#define iowrite32(val,X)		writel(val,X)
-#define iowrite32be(val,X)		__raw_writel(val,X)
+#define ioread8			readb
+#define ioread16		readw
+#define ioread16be		__raw_readw
+#define ioread32		readl
+#define ioread32be		__raw_readl
+#define iowrite8		writeb
+#define iowrite16		writew
+#define iowrite16be		__raw_writew
+#define iowrite32		writel
+#define iowrite32be		__raw_writel
 
 /* Create a virtual mapping cookie for an IO port range */
 void __iomem *ioport_map(unsigned long port, unsigned int nr);
-- 
2.1.4


             reply	other threads:[~2015-01-29 14:52 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-01-29 14:52 Ricardo Ribalda Delgado [this message]
2015-01-29 16:02 ` Arnd Bergmann
2015-01-29 16:33   ` Ricardo Ribalda Delgado
2015-01-31  2:07 ` David Miller

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