Commit bec1b819 authored by Russell King's avatar Russell King Committed by Russell King
Browse files

[ARM] Quieten spurious IRQ detection 



Only issue a "nobody cared" warning after 99900 spurious interrupts.
This avoids the occasional spurious interrupt causing warnings, as
per x86.

Signed-off-by: default avatarRussell King <rmk+kernel@arm.linux.org.uk>
parent 58e9ff56

arch/arm/kernel/irq.c

+8 −3
Original line number Diff line number Diff line
@@ -305,14 +305,19 @@ report_bad_irq(unsigned int irq, struct pt_regs *regs, struct irqdesc *desc, int 
	static int count = 100;

	struct irqaction *action;



	if (!count || noirqdebug)

	if (noirqdebug)

		return;



	count--;



	if (ret != IRQ_HANDLED && ret != IRQ_NONE) {

		if (!count)

			return;

		count--;

		printk("irq%u: bogus retval mask %x\n", irq, ret);

	} else {

		desc->irqs_unhandled++;

		if (desc->irqs_unhandled <= 99900)

			return;

		desc->irqs_unhandled = 0;

		printk("irq%u: nobody cared\n", irq);

	}

	show_regs(regs);

include/asm-arm/mach/irq.h

+1 −0
Original line number Diff line number Diff line
@@ -74,6 +74,7 @@ struct irqdesc { 
	unsigned int	noautoenable : 1;	/* don't automatically enable IRQ */

	unsigned int	unused   :25;



	unsigned int	irqs_unhandled;

	struct proc_dir_entry *procdir;



#ifdef CONFIG_SMP