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-rw-r--r--kernel/irq/handle.c16
1 files changed, 16 insertions, 0 deletions
diff --git a/kernel/irq/handle.c b/kernel/irq/handle.c
index aeb6e391276..a7b497ee919 100644
--- a/kernel/irq/handle.c
+++ b/kernel/irq/handle.c
@@ -249,3 +249,19 @@ out:
return 1;
}
+#ifdef CONFIG_TRACE_IRQFLAGS
+
+/*
+ * lockdep: we want to handle all irq_desc locks as a single lock-class:
+ */
+static struct lock_class_key irq_desc_lock_class;
+
+void early_init_irq_lock_class(void)
+{
+ int i;
+
+ for (i = 0; i < NR_IRQS; i++)
+ lockdep_set_class(&irq_desc[i].lock, &irq_desc_lock_class);
+}
+
+#endif