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kexec: fix compilation warning on xchg(&kexec_lock, 0) in kernel_kexec() 

kernel/kexec.c: In function 'kernel_kexec':
kernel/kexec.c:1506: warning: value computed is not used

Signed-off-by: Huang Ying <ying.huang@intel.com>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Huang Ying 2008-08-15 00:40:20 -07:00 committed by Linus Torvalds
parent ce289e8972
commit 4cd69b986e
1 changed files with 2 additions and 1 deletions
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3
kernel/kexec.c
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@ -1503,7 +1503,8 @@ int kernel_kexec(void)
}
Unlock:
xchg(&kexec_lock, 0);
if (!xchg(&kexec_lock, 0))
BUG();
return error;
}