xen/events: use locked set|clear_bit() for cpu_evtchn_mask

The per-cpu event channel masks can be updated unlocked from multiple
CPUs, so use the locked variant.

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>

diff --git a/drivers/xen/events.c b/drivers/xen/events.c
index d770b8c8885b4eed27b957a3b87bef9cf19da868..d6d4f76ed500c20e6c07f09877c6a0c6853bff60 100644 (file)
--- a/drivers/xen/events.c
+++ b/drivers/xen/events.c
@@ -278,8 +278,8 @@ static void bind_evtchn_to_cpu(unsigned int chn, unsigned int cpu)
        cpumask_copy(irq_to_desc(irq)->affinity, cpumask_of(cpu));
 #endif
 
-       __clear_bit(chn, cpu_evtchn_mask(cpu_from_irq(irq)));
-       __set_bit(chn, cpu_evtchn_mask(cpu));
+       clear_bit(chn, cpu_evtchn_mask(cpu_from_irq(irq)));
+       set_bit(chn, cpu_evtchn_mask(cpu));
 
        irq_info[irq].cpu = cpu;
 }