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From:   Linus Walleij <linus.walleij@linaro.org>
Date:   Thu, 22 Feb 2018 16:16:17 +0100
Message-ID: <CACRpkdaw75RH_WR4Ta9AmqNmGnaPhFKK2HfC=m8SNabACs95vg@mail.gmail.com>
Subject: Re: [PATCH v2 3/5] gpio: Change ISA_BUS_API dependency to selection
To:     William Breathitt Gray <vilhelm.gray@gmail.com>
Cc:     "Maciej S. Szmigiero" <mail@maciej.szmigiero.name>,
        Guenter Roeck <linux@roeck-us.net>,
        "open list:GPIO SUBSYSTEM" <linux-gpio@vger.kernel.org>,
        linux-iio@vger.kernel.org,
        LINUXWATCHDOG <linux-watchdog@vger.kernel.org>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
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On Fri, Dec 29, 2017 at 9:13 PM, William Breathitt Gray
<vilhelm.gray@gmail.com> wrote:

> The ISA_BUS_API Kconfig option enables the compilation of the ISA bus
> driver. The ISA bus driver does not perform any hardware interaction,
> and is instead just a thin layer of software abstraction to eliminate
> boilerplate code common to ISA-style device drivers. Since ISA_BUS_API
> has no dependencies and does not jeopardize the integrity of the system
> when enabled, drivers should select it when the ISA bus driver
> functionality is needed.
>
> Cc: Linus Walleij <linus.walleij@linaro.org>
> Signed-off-by: William Breathitt Gray <vilhelm.gray@gmail.com>

Patch applied to the GPIO tree for v4.17.

Can you confirm that we don't have any dangling ISA
drivers not using this?

Yours,
Linus Walleij