linux-kernel - [PATCH] Fix m32r _

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Date:	Sun, 19 Aug 2007 07:12:13 -0400
From:	Mathieu Desnoyers <mathieu.desnoyers@...ymtl.ca>
To:	Adrian Bunk <bunk@...nel.org>
Cc:	akpm@...ux-foundation.org, linux-kernel@...r.kernel.org,
	Christoph Lameter <clameter@....com>, takata@...ux-m32r.org,
	linux-m32r@...linux-m32r.org
Subject: [PATCH] Fix m32r __xchg (revised)

Fix m32r __xchg (revised)

the #endif  /* CONFIG_SMP */ should cover the default condition, or it may cause
bad parameter to be silently missed.

To make it work correctly, we have to remove the ifdef CONFIG SMP surrounding 
__xchg_called_with_bad_pointer declaration. Thanks to Adrian Bunk for
detecting this.

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@...ymtl.ca>
CC: takata@...ux-m32r.org
CC: linux-m32r@...linux-m32r.org
CC: Adrian Bunk <bunk@...nel.org>
---
 include/asm-m32r/system.h |    4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

Index: linux-2.6-lttng/include/asm-m32r/system.h
===================================================================
--- linux-2.6-lttng.orig/include/asm-m32r/system.h	2007-08-13 18:21:02.000000000 -0400
+++ linux-2.6-lttng/include/asm-m32r/system.h	2007-08-19 07:08:26.000000000 -0400
@@ -127,9 +127,7 @@ static inline void local_irq_disable(voi
 	((__typeof__(*(ptr)))__xchg_local((unsigned long)(x),(ptr), \
 			sizeof(*(ptr))))
 
-#ifdef CONFIG_SMP
 extern void  __xchg_called_with_bad_pointer(void);
-#endif
 
 #ifdef CONFIG_CHIP_M32700_TS1
 #define DCACHE_CLEAR(reg0, reg1, addr)				\
@@ -189,9 +187,9 @@ __xchg(unsigned long x, volatile void * 
 #endif	/* CONFIG_CHIP_M32700_TS1 */
 		);
 		break;
+#endif  /* CONFIG_SMP */
 	default:
 		__xchg_called_with_bad_pointer();
-#endif  /* CONFIG_SMP */
 	}
 
 	local_irq_restore(flags);
-- 
Mathieu Desnoyers
Computer Engineering Ph.D. Student, Ecole Polytechnique de Montreal
OpenPGP key fingerprint: 8CD5 52C3 8E3C 4140 715F  BA06 3F25 A8FE 3BAE 9A68
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