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

[pandora-kernel.git] / arch / i386 / kernel / smp.c

diff --git a/arch/i386/kernel/smp.c b/arch/i386/kernel/smp.c
index 1b080ab..5285aff 100644 (file)
--- a/arch/i386/kernel/smp.c
+++ b/arch/i386/kernel/smp.c
@@ -693,6 +693,10 @@ int smp_call_function_single(int cpu, void (*func) (void *info), void *info,
                put_cpu();
                return -EBUSY;
        }
+
+       /* 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);