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Clear spurious irq stat information when adding irq handler

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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>
This commit is contained in:
Linus Torvalds 2007-01-23 14:16:31 -08:00
parent d227e87e6c
commit 8528b0f1de
1 changed files with 3 additions and 0 deletions
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3
kernel/irq/manage.c
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@ -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;