linux-kernel - Re: [PATCH v4 04/14] GPIO: Add gpio-ingenic driver

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Date:   Fri, 7 Apr 2017 11:34:38 +0200
From:   Linus Walleij <linus.walleij@...aro.org>
To:     Paul Cercueil <paul@...pouillou.net>
Cc:     Alexandre Courbot <gnurou@...il.com>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Ralf Baechle <ralf@...ux-mips.org>,
        Boris Brezillon <boris.brezillon@...e-electrons.com>,
        Thierry Reding <thierry.reding@...il.com>,
        Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>,
        Maarten ter Huurne <maarten@...ewalker.org>,
        Lars-Peter Clausen <lars@...afoo.de>,
        Paul Burton <paul.burton@...tec.com>,
        James Hogan <james.hogan@...tec.com>,
        "linux-gpio@...r.kernel.org" <linux-gpio@...r.kernel.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Linux MIPS <linux-mips@...ux-mips.org>,
        "linux-mmc@...r.kernel.org" <linux-mmc@...r.kernel.org>,
        "linux-mtd@...ts.infradead.org" <linux-mtd@...ts.infradead.org>,
        "linux-pwm@...r.kernel.org" <linux-pwm@...r.kernel.org>,
        "linux-fbdev@...r.kernel.org" <linux-fbdev@...r.kernel.org>
Subject: Re: [PATCH v4 04/14] GPIO: Add gpio-ingenic driver

On Sun, Apr 2, 2017 at 10:42 PM, Paul Cercueil <paul@...pouillou.net> wrote:

> This driver handles the GPIOs of all the Ingenic JZ47xx SoCs
> currently supported by the upsteam Linux kernel.
>
> Signed-off-by: Paul Cercueil <paul@...pouillou.net>

I guess you saw the Kconfig complaint from the build robot, please fix that
so we get silent builds.

>  v2: Consider it's a new patch. Completely rewritten from v1.
>  v3: Add missing include <linux/pinctrl/consumer.h> and drop semicolon after }
>  v4: Completely rewritten from v3.

I really like v4 :)

> +static inline bool gpio_get_value(struct ingenic_gpio_chip *jzgc, u8 offset)

Actually the return value should be an int.

I know, it is a historical artifact, if we change it we need to change
it everywhere.

> +       /* DO NOT EXPAND THIS: FOR BACKWARD GPIO NUMBERSPACE COMPATIBIBILITY
> +        * ONLY: WORK TO TRANSITION CONSUMERS TO USE THE GPIO DESCRIPTOR API IN
> +        * <linux/gpio/consumer.h> INSTEAD.
> +        */
> +       jzgc->gc.base = cell->id * 32;

OK then :)

This is merge material.

Yours,
Linus Walleij