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Commit b738a50a authored by Thomas Gleixner's avatar Thomas Gleixner
Browse files

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: default avatarThomas Gleixner <tglx@linutronix.de>
parent 1082687e

kernel/irq/handle.c

+3 −1
Original line number Diff line number Diff line
@@ -68,6 +68,9 @@ irqreturn_t handle_IRQ_event(unsigned int irq, struct irqaction *action) 
		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 @@ irqreturn_t handle_IRQ_event(unsigned int irq, struct irqaction *action) 


	if (status & IRQF_SAMPLE_RANDOM)

		add_interrupt_randomness(irq);

	local_irq_disable();



	return retval;

}