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>

1 files changed, 2 insertions, 2 deletions

diff --git a/drivers/xen/events.c b/drivers/xen/events.c
index d770b8c8885b..d6d4f76ed500 100644
--- 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;
 }