korg/linux
0
0
Fork 0
mirror of https://mirrors.bfsu.edu.cn/git/linux.git synced 2024-11-11 21:38:32 +08:00
Code Issues Packages Projects Releases Wiki Activity

[IA64] fix bug in ia64 __mutex_fastpath_trylock

Browse Source 
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>
This commit is contained in:
Chen, Kenneth W 2006-04-07 17:12:54 -07:00 committed by Tony Luck
parent 0681226661
commit cfab9d0e1d
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
include/asm-ia64/mutex.h
View File

@ -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;
}