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[PATCH] genirq: Allow fasteoi handler to retrigger disabled interrupts

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Make the fasteoi handler mark disabled interrupts as pending if they
happen anyway. This allow implementation of a delayed disable scheme
with the fasteoi handler.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
Benjamin Herrenschmidt 2006-07-03 19:54:59 +10:00 committed by Paul Mackerras
parent 3e9a69275f
commit 5a43a066b1
1 changed files with 4 additions and 1 deletions
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5
kernel/irq/chip.c
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@ -261,10 +261,13 @@ handle_level_irq(unsigned int irq, struct irq_desc *desc, struct pt_regs *regs)
* keep it masked and get out of here
*/
action = desc->action;
if (unlikely(!action || (desc->status & IRQ_DISABLED)))
if (unlikely(!action || (desc->status & IRQ_DISABLED))) {
desc->status |= IRQ_PENDING;
goto out;
}
desc->status |= IRQ_INPROGRESS;
desc->status &= ~IRQ_PENDING;
spin_unlock(&desc->lock);
action_ret = handle_IRQ_event(irq, regs, action);