linux-kernel - Re: [PATCH v3 1/6] ACPI: scan: Extend acpi_walk_dep_device

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Date:   Sun, 7 Mar 2021 22:39:18 +0200
From:   Andy Shevchenko <andy.shevchenko@...il.com>
To:     Daniel Scally <djrscally@...il.com>
Cc:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Tomasz Figa <tfiga@...omium.org>,
        Sakari Ailus <sakari.ailus@...ux.intel.com>,
        Rajmohan Mani <rajmohan.mani@...el.com>,
        "Rafael J. Wysocki" <rjw@...ysocki.net>,
        Len Brown <lenb@...nel.org>,
        Mika Westerberg <mika.westerberg@...ux.intel.com>,
        Linus Walleij <linus.walleij@...aro.org>,
        Bartosz Golaszewski <bgolaszewski@...libre.com>,
        Wolfram Sang <wsa@...nel.org>,
        Lee Jones <lee.jones@...aro.org>,
        kieran.bingham+renesas@...asonboard.com,
        Laurent Pinchart <laurent.pinchart@...asonboard.com>,
        Hans de Goede <hdegoede@...hat.com>,
        Mark Gross <mgross@...ux.intel.com>,
        Maximilian Luz <luzmaximilian@...il.com>,
        Robert Moore <robert.moore@...el.com>,
        Erik Kaneda <erik.kaneda@...el.com>, me@...wu.ch,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        ACPI Devel Maling List <linux-acpi@...r.kernel.org>,
        "open list:GPIO SUBSYSTEM" <linux-gpio@...r.kernel.org>,
        linux-i2c <linux-i2c@...r.kernel.org>,
        Platform Driver <platform-driver-x86@...r.kernel.org>,
        devel@...ica.org, "Rafael J . Wysocki" <rafael@...nel.org>
Subject: Re: [PATCH v3 1/6] ACPI: scan: Extend acpi_walk_dep_device_list()

On Sun, Mar 7, 2021 at 3:36 PM Daniel Scally <djrscally@...il.com> wrote:
> On 22/02/2021 13:34, Andy Shevchenko wrote:
> > On Mon, Feb 22, 2021 at 3:12 PM Daniel Scally <djrscally@...il.com> wrote:
> >> The acpi_walk_dep_device_list() is not as generalisable as its name
> >> implies, serving only to decrement the dependency count for each
> >> dependent device of the input. Extend the function to instead accept
> >> a callback which can be applied to all the dependencies in acpi_dep_list.
> >> Replace all existing calls to the function with calls to a wrapper, passing
> >> a callback that applies the same dependency reduction.
> > The code looks okay to me, if it was the initial idea, feel free to add
> > Reviewed-by: Andy Shevchenko <andy.shevchenko@...il.com>
>
>
> Thank you!
>
>
> >> + */
> >> +void acpi_dev_flag_dependency_met(acpi_handle handle)
> >> +{
> > Since it's acpi_dev_* namespace, perhaps it should take struct acpi_device here?
>
>
> I can do this, but I avoided it because in most of the uses in the
> kernel currently there's no struct acpi_device, they're just passing
> ACPI_HANDLE(dev) instead, so I'd need to get the adev with
> ACPI_COMPANION() in each place. It didn't seem worth it...but happy to
> do it if you'd prefer it that way?

I see, let Rafael decide then. I'm not pushing here.

-- 
With Best Regards,
Andy Shevchenko