[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>
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3171a0305d
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0b4a8a789a
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@ -995,7 +995,8 @@ asmlinkage long sys_kexec_load(unsigned long entry, unsigned long nr_segments,
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image = xchg(dest_image, image);
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out:
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xchg(&kexec_lock, 0); /* Release the mutex */
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locked = xchg(&kexec_lock, 0); /* Release the mutex */
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BUG_ON(!locked);
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kimage_free(image);
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return result;
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@ -1061,7 +1062,8 @@ void crash_kexec(struct pt_regs *regs)
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machine_crash_shutdown(&fixed_regs);
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machine_kexec(kexec_crash_image);
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}
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xchg(&kexec_lock, 0);
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locked = xchg(&kexec_lock, 0);
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BUG_ON(!locked);
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}
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}
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