Merge branch 'for-linus' of git://one.firstfloor.org/home/andi/git/linux-2.6

[linux-2.6-omap-h63xx.git] / arch / x86_64 / kernel / smp.c

diff --git a/arch/x86_64/kernel/smp.c b/arch/x86_64/kernel/smp.c
index 1bf0e094f43939175f0dd2b4146fdb44581cd509..af1ec4d23cf89131f16e5063f31c81a6810c63ba 100644 (file)
--- a/arch/x86_64/kernel/smp.c
+++ b/arch/x86_64/kernel/smp.c
@@ -379,6 +379,10 @@ int smp_call_function_single (int cpu, void (*func) (void *info), void *info,
                put_cpu();
                return 0;
        }
+
+       /* Can deadlock when called with interrupts disabled */
+       WARN_ON(irqs_disabled());
+
        spin_lock_bh(&call_lock);
        __smp_call_function_single(cpu, func, info, nonatomic, wait);
        spin_unlock_bh(&call_lock);