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authorLinus Torvalds <torvalds@woody.linux-foundation.org>2007-01-23 22:16:31 (GMT)
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-01-23 22:16:31 (GMT)
commit8528b0f1de1101c6002036fd53638fb21111d0ea (patch)
treefd4c21fbf54ae23b2edaf3ccd1d4423a55f2a14f /kernel
parentd227e87e6c939c6071def92bc7691ad774c733ff (diff)
downloadlinux-8528b0f1de1101c6002036fd53638fb21111d0ea.tar.xz
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>
Diffstat (limited to 'kernel')
-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 b385878..8b961ad 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;