linux-kernel - Re: [PATCH v5 5/5] pinctrl: renesas: pinctrl-rzg2l: Add IRQ domain to handle GPIO interrupt

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Date:   Tue, 24 May 2022 13:58:25 +0200
From:   Linus Walleij <linus.walleij@...aro.org>
To:     "Lad, Prabhakar" <prabhakar.csengg@...il.com>
Cc:     Marc Zyngier <maz@...nel.org>, Hans Verkuil <hverkuil@...all.nl>,
        Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        Thomas Gleixner <tglx@...utronix.de>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Bartosz Golaszewski <brgl@...ev.pl>,
        Thierry Reding <thierry.reding@...il.com>,
        Jonathan Hunter <jonathanh@...dia.com>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Andy Gross <agross@...nel.org>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        Andy Shevchenko <andy.shevchenko@...il.com>,
        "open list:GPIO SUBSYSTEM" <linux-gpio@...r.kernel.org>,
        linux-tegra <linux-tegra@...r.kernel.org>,
        linux-arm-msm <linux-arm-msm@...r.kernel.org>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>, LKML <linux-kernel@...r.kernel.org>,
        Linux-Renesas <linux-renesas-soc@...r.kernel.org>,
        Phil Edworthy <phil.edworthy@...esas.com>,
        Biju Das <biju.das.jz@...renesas.com>
Subject: Re: [PATCH v5 5/5] pinctrl: renesas: pinctrl-rzg2l: Add IRQ domain to
 handle GPIO interrupt

On Tue, May 24, 2022 at 12:21 PM Lad, Prabhakar
<prabhakar.csengg@...il.com> wrote:

> Since currently there is no other way to release the resources which are allocated in
> child_to_parent_hwirq()/populate_parent_alloc_arg() callbacks the free callback is
> overridden and the bitmap is released there.
>
> Let me know if there is any other better approach on handling the above and if it
> can be moved into irqchip instead of irqdomain.

I have no idea, as long as Marc Z ACKs the patch, it is good for me, the irqchip
intrinsics has burnt me more than once. (Says the guy who constructed
pin control,
yeah I know my code isn't better!)

Yours,
Linus Walleij