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Old 06-07-2011, 02:49 PM
Stefan Bader
 
Default xen: Use IRQF_FORCE_RESUME

From: Thomas Gleixner <tglx@linutronix.de>

commit 676dc3cf5bc36a9e129a3ad8fe3bd7b2ebf20f5d upstream

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>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>
---
drivers/xen/events.c | 20 +-------------------
1 files changed, 1 insertions(+), 19 deletions(-)

diff --git a/drivers/xen/events.c b/drivers/xen/events.c
index e4820ce..009ca4e 100644
--- a/drivers/xen/events.c
+++ b/drivers/xen/events.c
@@ -536,7 +536,7 @@ int bind_ipi_to_irqhandler(enum ipi_vector ipi,
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);
@@ -891,7 +891,6 @@ void xen_poll_irq(int irq)
void xen_irq_resume(void)
{
unsigned int cpu, irq, evtchn;
- struct irq_desc *desc;

init_evtchn_cpu_bindings();

@@ -910,23 +909,6 @@ void xen_irq_resume(void)
restore_cpu_virqs(cpu);
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);
- }
}

static struct irq_chip xen_dynamic_chip __read_mostly = {
--
1.7.4.1


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