linux-kernel - Re: [PATCH v1 1/1] backlight: hx8357: Convert to agnostic GPIO API

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Message-ID: <CACRpkdYXTk2pzXEM9MTjt=oT-CbhENABSLeb9dN7ZvEy8oqiag@mail.gmail.com>
Date:   Fri, 17 Mar 2023 21:53:40 +0100
From:   Linus Walleij <linus.walleij@...aro.org>
To:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Cc:     Bartosz Golaszewski <bartosz.golaszewski@...aro.org>,
        Dmitry Torokhov <dmitry.torokhov@...il.com>,
        linux-gpio@...r.kernel.org, linux-kernel@...r.kernel.org,
        dri-devel@...ts.freedesktop.org, linux-fbdev@...r.kernel.org,
        Bartosz Golaszewski <brgl@...ev.pl>,
        Lee Jones <lee@...nel.org>,
        Daniel Thompson <daniel.thompson@...aro.org>,
        Jingoo Han <jingoohan1@...il.com>, Helge Deller <deller@....de>
Subject: Re: [PATCH v1 1/1] backlight: hx8357: Convert to agnostic GPIO API

On Fri, Mar 17, 2023 at 7:51 PM Andy Shevchenko
<andriy.shevchenko@...ux.intel.com> wrote:

> The of_gpio.h is going to be removed. In preparation of that convert
> the driver to the agnostic API.
>
> Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>

Thanks for fixing this Andy!

> -#if !IS_ENABLED(CONFIG_LCD_HX8357)
> +#if IS_ENABLED(CONFIG_LCD_HX8357)
>                 /*
>                  * Himax LCD controllers used incorrectly named
>                  * "gpios-reset" property and also specified wrong
> @@ -452,7 +452,7 @@ static struct gpio_desc *of_find_gpio_rename(struct device_node *np,
>                  */
>                 const char *compatible;
>         } gpios[] = {
> -#if !IS_ENABLED(CONFIG_LCD_HX8357)
> +#if IS_ENABLED(CONFIG_LCD_HX8357)
>                 /* Himax LCD controllers used "gpios-reset" */
>                 { "reset",      "gpios-reset",  "himax,hx8357" },
>                 { "reset",      "gpios-reset",  "himax,hx8369" },

Eh what happened here .. it's even intuitively wrong.
I would add
Fixes: fbbbcd177a27 ("gpiolib: of: add quirk for locating reset lines
with legacy bindings")

It wasn't used until now it seems so not a regression and no
need for a separate patch.

Other than that it looks correct.
Reviewed-by: Linus Walleij <linus.walleij@...aro.org>

Yours,
Linus Walleij