Messages in this thread | | | Date | Thu, 3 Dec 2015 10:13:38 -0800 | From | Tony Lindgren <> | Subject | Re: [PATCH 2/2] pinctrl: single: remove misuse of IRQF_NO_SUSPEND flag |
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* Linus Walleij <linus.walleij@linaro.org> [151201 06:07]: > On Fri, Nov 27, 2015 at 6:21 PM, Sudeep Holla <sudeep.holla@arm.com> wrote: > > > From: Sudeep Holla <Sudeep.Holla@arm.com> > > > > The IRQF_NO_SUSPEND flag is used to identify the interrupts that should > > be left enabled so as to allow them to work as expected during the > > suspend-resume cycle, but doesn't guarantee that it will wake the system > > from a suspended state, enable_irq_wake is recommended to be used for > > the wakeup. > > > > This patch removes the use of IRQF_NO_SUSPEND flags replacing it with > > irq_set_irq_wake instead. > > > > Cc: Linus Walleij <linus.walleij@linaro.org> > > Cc: linux-gpio@vger.kernel.org > > Signed-off-by: Sudeep Holla <sudeep.holla@arm.com> > > I need Tony's ACK on this as well.
At least on omaps, this controller is always powered and we never want to suspend it as it handles wake-up events for all the IO pins. And that usecase sounds exactly like what you're describing above.
I don't quite follow what your suggested alternative for an interrupt controller is?
At least we need to have the alternative patched in with this chage before just removing IRQF_NO_SUSPEND.
The enable_irq_wake is naturally used for the consumer drivers of this interrupt controller and actually mostly done automatically now with the dev_pm_set_dedicated_wake_irq.
Regards,
Tony
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