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authorLinus Torvalds <torvalds@woody.linux-foundation.org>2007-01-23 14:16:31 -0800
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-01-23 14:16:31 -0800
commit8528b0f1de1101c6002036fd53638fb21111d0ea (patch)
treefd4c21fbf54ae23b2edaf3ccd1d4423a55f2a14f
parentd227e87e6c939c6071def92bc7691ad774c733ff (diff)
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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>
-rw-r--r--kernel/irq/manage.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c
index b385878c6e8..8b961adc3bd 100644
--- a/kernel/irq/manage.c
+++ b/kernel/irq/manage.c
@@ -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;