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-rw-r--r--kernel/irq/handle.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/kernel/irq/handle.c b/kernel/irq/handle.c
index 06b05a4d3007..893da67b7781 100644
--- a/kernel/irq/handle.c
+++ b/kernel/irq/handle.c
@@ -93,6 +93,8 @@ void __attribute__((weak)) arch_init_chip_data(struct irq_desc *desc, int cpu)
static void init_one_irq_desc(int irq, struct irq_desc *desc, int cpu)
{
memcpy(desc, &irq_desc_init, sizeof(struct irq_desc));
+
+ spin_lock_init(&desc->lock);
desc->irq = irq;
#ifdef CONFIG_SMP
desc->cpu = cpu;