Commit 8528b0f1 authored Jan 23, 2007 by Linus Torvalds

Clear spurious irq stat information when adding irq handler



Any newly added irq handler may obviously make any old spurious irq
status invalid, since the new handler may well be the thing that is
supposed to handle any interrupts that came in.

So just clear the statistics when adding handlers.

Pointed-out-by: Alan Cox <alan@lxorguk.ukuu.org.uk>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

parent d227e87e

kernel/irq/manage.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -315,6 +315,9 @@ int setup_irq(unsigned int irq, struct irqaction *new)
		/* Undo nested disables: */
		desc->depth = 1;
		}
		/* Reset broken irq detection when installing new handler */
		desc->irq_count = 0;
		desc->irqs_unhandled = 0;
		spin_unlock_irqrestore(&desc->lock, flags);

		new->irq = irq;

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