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| author | Huang Ying <ying.huang@intel.com> | 2008-08-15 00:40:20 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-08-15 08:35:42 -0700 |
| commit | 4cd69b986ebf0f8da93f82ffbb89c032ee09c2e1 (patch) | |
| tree | cb4085d0b8f18e86b892c5bd88a5d6280c698300 /kernel | |
| parent | ce289e89726948b50a58c9e8f4e81174a8c9c254 (diff) | |
| download | lwn-4cd69b986ebf0f8da93f82ffbb89c032ee09c2e1.tar.gz lwn-4cd69b986ebf0f8da93f82ffbb89c032ee09c2e1.zip | |
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>
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/kexec.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/kernel/kexec.c b/kernel/kexec.c index c8a4370e2a34..cf3797b76786 100644 --- a/kernel/kexec.c +++ b/kernel/kexec.c @@ -1503,7 +1503,8 @@ int kernel_kexec(void) } Unlock: - xchg(&kexec_lock, 0); + if (!xchg(&kexec_lock, 0)) + BUG(); return error; } |