diff options
| -rw-r--r-- | arch/arm/oprofile/op_model_mpcore.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/arch/arm/oprofile/op_model_mpcore.c b/arch/arm/oprofile/op_model_mpcore.c index 898500718249..7791da791f5f 100644 --- a/arch/arm/oprofile/op_model_mpcore.c +++ b/arch/arm/oprofile/op_model_mpcore.c @@ -257,8 +257,13 @@ static void em_stop(void) */ static void em_route_irq(int irq, unsigned int cpu) { - irq_desc[irq].affinity = cpumask_of_cpu(cpu); - irq_desc[irq].chip->set_affinity(irq, cpumask_of_cpu(cpu)); + struct irq_desc *desc = irq_desc + irq; + cpumask_t mask = cpumask_of_cpu(cpu); + + spin_lock_irq(&desc->lock); + desc->affinity = mask; + desc->chip->set_affinity(irq, mask); + spin_unlock_irq(&desc->lock); } static int em_setup(void) |