linux-kernel - Re: [PATCH] HID: intel-ish-hid: ipc: Rework EHL OOB wakeup

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Message-ID: <CAAd53p67tiP0xXwhn=NviU_rvrSveSxbAhDieYG9AmUWF2e__Q@mail.gmail.com>
Date:   Thu, 21 Sep 2023 14:08:33 +0800
From:   Kai-Heng Feng <kai.heng.feng@...onical.com>
To:     "Rafael J. Wysocki" <rafael@...nel.org>
Cc:     srinivas pandruvada <srinivas.pandruvada@...ux.intel.com>,
        "Xu, Even" <even.xu@...el.com>,
        "jikos@...nel.org" <jikos@...nel.org>,
        "benjamin.tissoires@...hat.com" <benjamin.tissoires@...hat.com>,
        "linux-pm@...r.kernel.org" <linux-pm@...r.kernel.org>,
        "linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>,
        "Lee, Jian Hui" <jianhui.lee@...onical.com>,
        "Zhang, Lixu" <lixu.zhang@...el.com>,
        "Ba, Najumon" <najumon.ba@...el.com>,
        "linux-input@...r.kernel.org" <linux-input@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] HID: intel-ish-hid: ipc: Rework EHL OOB wakeup

On Wed, Sep 20, 2023 at 2:00 AM Rafael J. Wysocki <rafael@...nel.org> wrote:
>
> On Tue, Sep 19, 2023 at 6:54 PM srinivas pandruvada
> <srinivas.pandruvada@...ux.intel.com> wrote:
> >
> > On Tue, 2023-09-19 at 15:36 +0800, Kai-Heng Feng wrote:
> > > On Mon, Sep 18, 2023 at 11:57 PM srinivas pandruvada
> > > <srinivas.pandruvada@...ux.intel.com> wrote:
> > > >
> > > > Hi Kai-Heng,
> > > > On Mon, 2023-09-18 at 09:17 +0800, Kai-Heng Feng wrote:
> > > > > Hi Even,
> > > > >
> > > > > On Mon, Sep 18, 2023 at 8:33 AM Xu, Even <even.xu@...el.com>
> > > > > wrote:
> > > > > >
> > > > > > Hi, Kai-Heng,
> > > > > >
> > > > > > I just got feedback, for testing EHL S5 wakeup feature, you
> > > > > > need
> > > > > > several steps to setup and access
> > > > > > "https://portal.devicewise.com/things/browse" to trigger wake.
> > > > > > But currently, our test account of this website are all out of
> > > > > > data.
> > > > > > So maybe you need double check with the team who required you
> > > > > > preparing the patch for the verification.
> > > > >
> > > > > The patch is to solve the GPE refcount overflow, while
> > > > > maintaining S5
> > > > > wakeup. I don't have any mean to test S5 wake.
> > > > >
> > > > The issue is not calling acpi_disable_gpe(). To reduce the scope of
> > > > change can we just add that instead of a adding new callbacks. This
> > > > way
> > > > scope is reduced.
> > >
> > > This patch does exactly the same thing by letting PCI and ACPI handle
> > > the PME and GPE.
> > > Though the change seems to be bigger, it actually reduces the duped
> > > code, while keep the S5 wakeup ability intact.
> > It may be doing the same. But with long chain of calls without
> > verification, I am not comfortable.
> > This can be another patch by itself to use the framework.
>
> I agree.
>
> Let's change one thing at a time.
>
> > But you are targeting a fix for overflow issue, which is separate from
> > the use of PCI/ACPI framework.
>
> Yes, let's fix the bug first and make things look nicer separately.

Right, please use the fix from Srinivas and I'll send a separate patch
to make things looks better.

Kai-Heng