Rafael J. Wysocki <rafael@xxxxxxxxxx> 於 2020年3月4日 週三 上午6:23寫道：
>
> On Tue, Mar 3, 2020 at 10:09 AM Rafael J. Wysocki <rafael@xxxxxxxxxx> wrote:
> >
> > On Tue, Mar 3, 2020 at 8:29 AM Jian-Hong Pan <jian-hong@xxxxxxxxxxxx> wrote:
> > >
> > > Rafael J. Wysocki <rafael@xxxxxxxxxx> 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.
Tested the commits on some laptops including ASUS UX434DA. The
brightness hotkeys are working now.
Jian-Hong Pan
