linux-kernel - Re: [PATCH] HID: intel-ish-hid: ipc: only enable IRQ wakeup when requested

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Date:   Fri, 3 Dec 2021 09:45:41 +0100
From:   Benjamin Tissoires <benjamin.tissoires@...hat.com>
To:     Srinivas Pandruvada <srinivas.pandruvada@...ux.intel.com>
Cc:     Thomas Weißschuh <linux@...ssschuh.net>,
        Jiri Kosina <jikos@...nel.org>,
        "open list:HID CORE LAYER" <linux-input@...r.kernel.org>,
        lkml <linux-kernel@...r.kernel.org>,
        Mark Pearson <markpearson@...ovo.com>,
        Daniel Drubin <daniel.drubin@...el.com>
Subject: Re: [PATCH] HID: intel-ish-hid: ipc: only enable IRQ wakeup when requested

On Wed, Dec 1, 2021 at 2:35 PM Srinivas Pandruvada
<srinivas.pandruvada@...ux.intel.com> wrote:
>
> On Tue, 2021-11-30 at 07:01 +0100, Thomas Weißschuh wrote:
> > Fixes spurious wakeups from s0ix on Lenovo ThinkPad X1 Cargon Gen 9
> > on
> > lid close.
> >
> > These wakeups are generated by interrupts from the ISH on changes to
> > the
> > lid status.
> >
> > By disabling the wake IRQ from the ISH we inhibit these spurious
> > wakeups while keeping the resume from LID open through the ACPI
> > interrupt.
> >
> > Reports on the Lenovo forums indicate that Lenovo ThinkPad X1 Yoga
> > Gen6
> > is also affected.
> >
> > Fixes: ae02e5d40d5f ("HID: intel-ish-hid: ipc layer")
> > BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=214855
> > Signed-off-by: Thomas Weißschuh <linux@...ssschuh.net>
> Acked-by: Srinivas Pandruvada <srinivas.pandruvada@...ux.intel.com>

Applied to for-5.16/upstream-fixes in hid.git

thanks

Cheers,
Benjamin

>
> > ---
> >  drivers/hid/intel-ish-hid/ipc/pci-ish.c | 6 ++++--
> >  1 file changed, 4 insertions(+), 2 deletions(-)
> >
> > diff --git a/drivers/hid/intel-ish-hid/ipc/pci-ish.c
> > b/drivers/hid/intel-ish-hid/ipc/pci-ish.c
> > index 1c5039081db2..8e9d9450cb83 100644
> > --- a/drivers/hid/intel-ish-hid/ipc/pci-ish.c
> > +++ b/drivers/hid/intel-ish-hid/ipc/pci-ish.c
> > @@ -266,7 +266,8 @@ static void __maybe_unused
> > ish_resume_handler(struct work_struct *work)
> >
> >         if (ish_should_leave_d0i3(pdev) && !dev->suspend_flag
> >                         && IPC_IS_ISH_ILUP(fwsts)) {
> > -               disable_irq_wake(pdev->irq);
> > +               if (device_may_wakeup(&pdev->dev))
> > +                       disable_irq_wake(pdev->irq);
> >
> >                 ish_set_host_ready(dev);
> >
> > @@ -337,7 +338,8 @@ static int __maybe_unused ish_suspend(struct device
> > *device)
> >                          */
> >                         pci_save_state(pdev);
> >
> > -                       enable_irq_wake(pdev->irq);
> > +                       if (device_may_wakeup(&pdev->dev))
> > +                               enable_irq_wake(pdev->irq);
> >                 }
> >         } else {
> >                 /*
> >
> > base-commit: d58071a8a76d779eedab38033ae4c821c30295a5
>
>