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genirq: Fixup fasteoi handler for oneshot mode
author
Thomas Gleixner
<tglx@linutronix.de>
Wed, 2 Mar 2011 10:49:21 +0000
(11:49 +0100)
committer
Thomas Gleixner
<tglx@linutronix.de>
Wed, 2 Mar 2011 10:49:21 +0000
(11:49 +0100)
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>
kernel/irq/chip.c
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diff --git
a/kernel/irq/chip.c
b/kernel/irq/chip.c
index b5145654855fbe3be4f5588a1318573f15e8bef6..c9c0601f0615a1eaef8e3c425c61662395987c8e 100644
(file)
--- 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);
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