Attachment 192491 Details for Bug 245247 – patch 2 / 3 - genirq-suppress-resend-of-level-interrupts

patch 2 / 3 - genirq-suppress-resend-of-level-interrupts

genirq-suppress-resend-of-level-interrupts.patch (text/x-patch), 1.01 KB, created by Luis Claudio R. Goncalves on 2007-09-11 13:30:21 UTC

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Creator: Luis Claudio R. Goncalves

Created: 2007-09-11 13:30:21 UTC

Size: 1.01 KB

patch

obsolete

>
>Level type interrupts are resent by the interrupt hardware when
>they are still active at irq_enable().
>
>Suppress the resend mechanism for interrupts marked as level.
>
>Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
>
>---
> kernel/irq/resend.c |    7 ++++++-
> 1 file changed, 6 insertions(+), 1 deletion(-)
>
>Index: linux-2.6/kernel/irq/resend.c
>===================================================================
>--- linux-2.6.orig/kernel/irq/resend.c	2007-08-12 17:18:04.000000000 +0200
>+++ linux-2.6/kernel/irq/resend.c	2007-08-12 17:18:04.000000000 +0200
>@@ -62,7 +62,12 @@ void check_irq_resend(struct irq_desc *d
> 	 */
> 	desc->chip->enable(irq);
> 
>-	if ((status & (IRQ_PENDING | IRQ_REPLAY)) == IRQ_PENDING) {
>+	/*
>+	 * We do not resend level type interrupts. Level type
>+	 * interrupts are resent by hardware when they are still
>+	 * active.
>+	 */
>+	if ((status & (IRQ_LEVEL | IRQ_PENDING | IRQ_REPLAY)) == IRQ_PENDING) {
> 		desc->status = (status & ~IRQ_PENDING) | IRQ_REPLAY;
> 
> 		if (!desc->chip || !desc->chip->retrigger ||

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Attachments on bug 245247: 157571 | 192481 | 192491 | 192501 | 192701