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Subject[patch 4/4] xen: Use IRQF_FORCE_RESUME
Mark the IRQF_NO_SUSPEND interrupts IRQF_FORCE_RESUME and remove the extra
walk through the interrupt descriptors.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---
drivers/xen/events.c | 20 +-------------------
1 file changed, 1 insertion(+), 19 deletions(-)
Index: linux-next/drivers/xen/events.c
===================================================================
--- linux-next.orig/drivers/xen/events.c
+++ linux-next/drivers/xen/events.c
@@ -973,7 +973,7 @@ int bind_ipi_to_irqhandler(enum ipi_vect
if (irq < 0)
return irq;

- irqflags |= IRQF_NO_SUSPEND;
+ irqflags |= IRQF_NO_SUSPEND | IRQF_FORCE_RESUME;
retval = request_irq(irq, handler, irqflags, devname, dev_id);
if (retval != 0) {
unbind_from_irq(irq);
@@ -1429,7 +1429,6 @@ void xen_poll_irq(int irq)
void xen_irq_resume(void)
{
unsigned int cpu, irq, evtchn;
- struct irq_desc *desc;

init_evtchn_cpu_bindings();

@@ -1449,23 +1448,6 @@ void xen_irq_resume(void)
restore_cpu_ipis(cpu);
}

- /*
- * Unmask any IRQF_NO_SUSPEND IRQs which are enabled. These
- * are not handled by the IRQ core.
- */
- for_each_irq_desc(irq, desc) {
- if (!desc->action || !(desc->action->flags & IRQF_NO_SUSPEND))
- continue;
- if (desc->status & IRQ_DISABLED)
- continue;
-
- evtchn = evtchn_from_irq(irq);
- if (evtchn == -1)
- continue;
-
- unmask_evtchn(evtchn);
- }
-
restore_cpu_pirqs();
}




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