genirq: Warn when handler enables interrupts
We run all handlers with interrupts disabled and expect them not to
enable them. Warn when we catch one who does.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
diff --git a/kernel/irq/handle.c b/kernel/irq/handle.c
index 3540a71..cdd6fbb 100644
--- a/kernel/irq/handle.c
+++ b/kernel/irq/handle.c
@@ -68,6 +68,9 @@
ret = action->handler(irq, action->dev_id);
trace_irq_handler_exit(irq, action, ret);
+ if (WARN_ON_ONCE(!irqs_disabled()))
+ local_irq_disable();
+
switch (ret) {
case IRQ_WAKE_THREAD:
/*
@@ -114,7 +117,6 @@
if (status & IRQF_SAMPLE_RANDOM)
add_interrupt_randomness(irq);
- local_irq_disable();
return retval;
}