On Tuesday, July 08, 2014 05:54:35 PM Dmitry Torokhov wrote:
> On Wed, Jul 09, 2014 at 02:59:33AM +0200, Rafael J. Wysocki wrote:
> > On Tuesday, July 08, 2014 05:15:06 PM Dmitry Torokhov wrote:
> > > On Wed, Jul 09, 2014 at 01:06:07AM +0200, Rafael J. Wysocki wrote:
[cut]
> > >
> > > When device driver marks IRQ as a wakeup source I believe it is prepared
> > > to handle it (or it would shut it off explicitly).
> >
> > I can agree with that.
> >
> > Are you suggesting that __disable_irq() should check irq_data for
> > IRQD_WAKEUP_STATE and skip the IRQ (in the 'suspend' case) if that is set?
>
> Yes, something like that.
OK
Aubrey, can you please check if the appended patch helps on the T100?
Rafael
---
kernel/irq/manage.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
Index: linux-pm/kernel/irq/manage.c
===================================================================
--- linux-pm.orig/kernel/irq/manage.c
+++ linux-pm/kernel/irq/manage.c
@@ -385,7 +385,8 @@ setup_affinity(unsigned int irq, struct
void __disable_irq(struct irq_desc *desc, unsigned int irq, bool suspend)
{
if (suspend) {
- if (!desc->action || (desc->action->flags & IRQF_NO_SUSPEND))
+ if (!desc->action || (desc->action->flags & IRQF_NO_SUSPEND)
+ || irqd_has_set(&desc->irq_data, IRQD_WAKEUP_STATE))
return;
desc->istate |= IRQS_SUSPENDED;
}
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