linux-kernel - Re: [PATCH 4/7] gpio: dwapb: Convert driver to using the GPIO-lib-based IRQ-chip

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Message-ID: <CACRpkdZO242FC=O8nAXjKX=9VRpkkQdMA6S0L2ZWNX9D1hmcYw@mail.gmail.com>
Date:   Thu, 23 Jul 2020 15:17:08 +0200
From:   Linus Walleij <linus.walleij@...aro.org>
To:     Serge Semin <Sergey.Semin@...kalelectronics.ru>
Cc:     Hoan Tran <hoan@...amperecomputing.com>,
        Bartosz Golaszewski <bgolaszewski@...libre.com>,
        Serge Semin <fancer.lancer@...il.com>,
        Andy Shevchenko <andy.shevchenko@...il.com>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Alexey Malahov <Alexey.Malahov@...kalelectronics.ru>,
        Pavel Parkhomenko <Pavel.Parkhomenko@...kalelectronics.ru>,
        Rob Herring <robh+dt@...nel.org>,
        "open list:GPIO SUBSYSTEM" <linux-gpio@...r.kernel.org>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 4/7] gpio: dwapb: Convert driver to using the
 GPIO-lib-based IRQ-chip

Hi Serge,

On Thu, Jul 23, 2020 at 3:39 AM Serge Semin
<Sergey.Semin@...kalelectronics.ru> wrote:

> GPIO-lib provides a ready-to-use interface to initialize an IRQ-chip on
> top of a GPIO chip. It's better from maintainability and readability
> point of view to use one instead of supporting a hand-written Generic
> IRQ-chip-based implementation. Moreover the new implementation won't
> cause much functional overhead but will provide a cleaner driver code.
> All of that makes the DW APB GPIO driver conversion pretty much justified
> especially seeing a tendency of the other GPIO drivers getting converted
> too.

Needless to say I am a big fan of this patch. It's what I wanted to
do with the driver but was afraid to dry-code.

Please look into the minor nits pointed out by Andy and respin,
I really want to apply this patch set.

Thanks,
Linus Walleij