From: Russell King <rmk+kernel@arm.linux.org.uk>
Date: Tue, 19 May 2015 12:39:05 +0000 (+0100)
Subject: ARM: remove __bad_xchg definition
X-Git-Tag: omap-for-v4.2/fixes-rc1^2~100^2~7^3~3
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=31cd08c3a1db4b3164567a2a424b5e5dba6ce7a3;p=pandora-kernel.git

ARM: remove __bad_xchg definition

We want link errors if xchg() is called for a variable size we do not
support.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
---

diff --git a/arch/arm/include/asm/cmpxchg.h b/arch/arm/include/asm/cmpxchg.h
index abb2c3769b01..f4d74ab3ec1f 100644
--- a/arch/arm/include/asm/cmpxchg.h
+++ b/arch/arm/include/asm/cmpxchg.h
@@ -94,6 +94,7 @@ static inline unsigned long __xchg(unsigned long x, volatile void *ptr, int size
 		break;
 #endif
 	default:
+		/* Cause a link-time error, the xchg() size is not supported */
 		__bad_xchg(ptr, size), ret = 0;
 		break;
 	}
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