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authorRoland McGrath <roland@redhat.com>2006-09-29 02:00:39 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-09-29 09:18:15 -0700
commit0b4a8a789a328af6aac613734c362cf6aad72201 (patch)
treee2488a7e4767dd1d25f4691b12fde86041404982 /kernel/kexec.c
parent3171a0305d62e6627a24bff35af4f997e4988a80 (diff)
downloadlinux-2.6.34-ux500-0b4a8a789a328af6aac613734c362cf6aad72201.tar.gz
[PATCH] kexec warning fix
This fixes a couple of compiler warnings, and adds paranoia checks as well. Signed-off-by: Roland McGrath <roland@redhat.com> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'kernel/kexec.c')
-rw-r--r--kernel/kexec.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/kernel/kexec.c b/kernel/kexec.c
index 37cad75cf49..fcdd5d2bc3f 100644
--- a/kernel/kexec.c
+++ b/kernel/kexec.c
@@ -995,7 +995,8 @@ asmlinkage long sys_kexec_load(unsigned long entry, unsigned long nr_segments,
image = xchg(dest_image, image);
out:
- xchg(&kexec_lock, 0); /* Release the mutex */
+ locked = xchg(&kexec_lock, 0); /* Release the mutex */
+ BUG_ON(!locked);
kimage_free(image);
return result;
@@ -1061,7 +1062,8 @@ void crash_kexec(struct pt_regs *regs)
machine_crash_shutdown(&fixed_regs);
machine_kexec(kexec_crash_image);
}
- xchg(&kexec_lock, 0);
+ locked = xchg(&kexec_lock, 0);
+ BUG_ON(!locked);
}
}