genirq: Fixup fasteoi handler for oneshot mode

The fasteoi handler must mask the interrupt line in oneshot mode otherwise we end up with an irq storm. Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
git-mirror · Mar 2, 2011 · c69e375 · c69e375
1 parent 8d32a30
commit c69e375
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/kernel/irq/chip.c b/kernel/irq/chip.c
@@ -513,6 +513,10 @@ handle_fasteoi_irq(unsigned int irq, struct irq_desc *desc)
 		mask_irq(desc);
 		goto out;
 	}
+
+	if (desc->istate & IRQS_ONESHOT)
+		mask_irq(desc);
+
 	preflow_handler(desc);
 	handle_irq_event(desc);