linux-kernel - Re: [PATCH v2 1/6] gpio: exar: Fix passing in of parent PCI device

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Message-ID: <CAHp75VcRRxgzoPio2zWrR5rE_ac9uQjcphcXTQF6TrM13qxe+A@mail.gmail.com>
Date:   Thu, 18 May 2017 20:14:20 +0300
From:   Andy Shevchenko <andy.shevchenko@...il.com>
To:     Jan Kiszka <jan.kiszka@...mens.com>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Linus Walleij <linus.walleij@...aro.org>,
        Alexandre Courbot <gnurou@...il.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        "linux-serial@...r.kernel.org" <linux-serial@...r.kernel.org>,
        "linux-gpio@...r.kernel.org" <linux-gpio@...r.kernel.org>,
        Sudip Mukherjee <sudip.mukherjee@...ethink.co.uk>,
        Sascha Weisenberger <sascha.weisenberger@...mens.com>
Subject: Re: [PATCH v2 1/6] gpio: exar: Fix passing in of parent PCI device

On Thu, May 18, 2017 at 5:59 PM, Jan Kiszka <jan.kiszka@...mens.com> wrote:
> This fixes reloading of the GPIO driver for the same platform device
> instance as created by the exar UART driver: First of all, the driver
> sets drvdata to its own value during probing and does not restore the
> original value on exit. But this won't help anyway as the core clears
> drvdata after the driver left.
>
> Use stable platform_data instead.

Okay, basically what we are trying to do here is to reinvent part of
MFD framework.

I'd like to hear Linus' and others opinions if it worth to use it instead.

-- 
With Best Regards,
Andy Shevchenko