xen: Use IRQF_FORCE_RESUME

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>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Andi Kleen <ak@linux.intel.com>

diff --git a/drivers/xen/events.c b/drivers/xen/events.c
index 9c66deb72b8d411be96514891388fc29c60e54e6..614c88b41f4fba788d4ef26a478e228aa8cc8ac9 100644 (file)
--- a/drivers/xen/events.c
+++ b/drivers/xen/events.c
@@ -537,7 +537,7 @@ 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);
@@ -896,7 +896,6 @@ void xen_poll_irq(int irq)
 void xen_irq_resume(void)
 {
        unsigned int cpu, irq, evtchn;
-       struct irq_desc *desc;
 
        init_evtchn_cpu_bindings();
 
@@ -915,23 +914,6 @@ 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 = {