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 <[email protected]> Acked-by: Thomas Gleixner <[email protected]> Acked-by: Ingo Molnar <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
kerneltoast · Jan 23, 2007 · 8528b0f · 8528b0f
1 parent d227e87
commit 8528b0f
Showing 1 changed file with 3 additions and 0 deletions.
diff --git 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;