Commit cfab9d0e authored Apr 07, 2006 by Kenneth W Chen Committed by Tony Luck Apr 07, 2006

[IA64] fix bug in ia64 __mutex_fastpath_trylock



The parenthesis around "likely" used in ia64 __mutex_fastpath_trylock
is incorrect, and it leads to broken mutex_trylock.  Here is the
patch that fixed the bug.  I removed the likely altogether because
there is no branch and gcc does a reasonable job at predicating the
return value.

Signed-off-by: Ken Chen <kenneth.w.chen@intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>

parent 06812266

include/asm-ia64/mutex.h

+1 −1

Original line number	Diff line number	Diff line
		@@ -84,7 +84,7 @@ __mutex_fastpath_unlock(atomic_t count, void (fail_fn)(atomic_t *))
		static inline int
		__mutex_fastpath_trylock(atomic_t count, int (fail_fn)(atomic_t *))
		{
		if (likely(cmpxchg_acq(count, 1, 0)) == 1)
		if (cmpxchg_acq(count, 1, 0) == 1)
		return 1;
		return 0;
		}