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[ARM] Orion: top-level IRQs are level-triggered

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Make it clear that Orion top-level IRQs are level-triggered.  This
means that we don't need an ->ack() handler, or at least, we don't
need the ->ack() handler (or the acking part of the ->mask_ack()
handler) to actually do anything.

Given that, we might as well point our ->mask_ack() handler at the
->mask() handler instead of providing a dummy ->ack() handler, since
providing a ->mask_ack() handler on level IRQ sources will prevent
->ack() from ever being called.

Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Acked-by: Russell King <linux@arm.linux.org.uk>
This commit is contained in:
Lennert Buytenhek 2008-05-18 19:46:59 +02:00 committed by Lennert Buytenhek
parent ee0dd84005
commit 000e99c333
1 changed files with 2 additions and 1 deletions
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3
arch/arm/plat-orion/irq.c
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@ -36,8 +36,8 @@ static void orion_irq_unmask(u32 irq)
static struct irq_chip orion_irq_chip = {
.name = "orion_irq",
.ack = orion_irq_mask,
.mask = orion_irq_mask,
.mask_ack = orion_irq_mask,
.unmask = orion_irq_unmask,
};
@ -59,6 +59,7 @@ void __init orion_irq_init(unsigned int irq_start, void __iomem *maskaddr)
set_irq_chip(irq, &orion_irq_chip);
set_irq_chip_data(irq, maskaddr);
set_irq_handler(irq, handle_level_irq);
irq_desc[irq].status |= IRQ_LEVEL;
set_irq_flags(irq, IRQF_VALID);
}
}