Commit e163d529 authored Jan 12, 2011 by Rabin Vincent Committed by Russell King Jan 12, 2011

ARM: 6621/1: bitops: remove condition code clobber for CLZ



The CLZ instruction does not alter the condition flags, so remove the
"cc" clobber from the inline asm for fls().

Acked-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Signed-off-by: Rabin Vincent <rabin@rab.in>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

parent 22eeb8f6

arch/arm/include/asm/bitops.h

+1 −1

Original line number	Original line	Diff line number	Diff line
	@@ -285,7 +285,7 @@ static inline int fls(int x)
	if (__builtin_constant_p(x))		if (__builtin_constant_p(x))
	return constant_fls(x);		return constant_fls(x);

	asm("clz\t%0, %1" : "=r" (ret) : "r" (x) : "cc");		asm("clz\t%0, %1" : "=r" (ret) : "r" (x));
	ret = 32 - ret;		ret = 32 - ret;
	return ret;		return ret;
	}		}