linux-kernel - Re: [PATCH 0/6] ACPI: EC: Updates related to initialization

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Date:   Tue, 3 Mar 2020 23:23:12 +0100
From:   "Rafael J. Wysocki" <rafael@...nel.org>
To:     Jian-Hong Pan <jian-hong@...lessm.com>
Cc:     "Rafael J. Wysocki" <rafael@...nel.org>,
        "Rafael J. Wysocki" <rjw@...ysocki.net>,
        Daniel Drake <drake@...lessm.com>,
        Linux ACPI <linux-acpi@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Linux Upstreaming Team <linux@...lessm.com>
Subject: Re: [PATCH 0/6] ACPI: EC: Updates related to initialization

On Tue, Mar 3, 2020 at 10:09 AM Rafael J. Wysocki <rafael@...nel.org> wrote:
>
> On Tue, Mar 3, 2020 at 8:29 AM Jian-Hong Pan <jian-hong@...lessm.com> wrote:
> >
> > Rafael J. Wysocki <rafael@...nel.org> 於 2020年3月2日 週一 下午7:45寫道：
> > >

[cut]

> >
> > Originally, ec_install_handlers() will return the returned value from
> > install_gpio_irq_event_handler() from acpi_dev_gpio_irq_get(), which
> > is -EPROBE_DEFER, instead of -ENXIO.  However, ec_install_handlers()
> > returns -ENXIO directly if install_gpio_irq_event_handler() returns
> > false in patch ("ACPI: EC: Consolidate event handler installation
> > code").  Here needs some modification.
>
> Thanks, I forgot about the -EPROBE_DEFER case.

The top-most commit in the git branch at

 git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm.git \
 acpi-ec-work

has been updated to take that case into account (I think that it
should be spelled out explicitly or it will be very easy to overlook
in the future).

Please test this one if possible.