Commit 5a43a066 authored Jul 03, 2006 by Benjamin Herrenschmidt Committed by Paul Mackerras Jul 03, 2006

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



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>

parent 3e9a6927

kernel/irq/chip.c

+4 −1

Original line number	Diff line number	Diff line
		@@ -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);