linux-kernel - Re: [PATCH v3 04/11] gpiolib: provide gpio_device_find_by

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Message-ID: <ZQf6E+itll3dmCnU@smile.fi.intel.com>
Date:   Mon, 18 Sep 2023 10:19:47 +0300
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     Bartosz Golaszewski <brgl@...ev.pl>
Cc:     Linus Walleij <linus.walleij@...aro.org>,
        Mika Westerberg <mika.westerberg@...ux.intel.com>,
        linux-gpio@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-acpi@...r.kernel.org,
        Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
Subject: Re: [PATCH v3 04/11] gpiolib: provide gpio_device_find_by_label()

On Fri, Sep 15, 2023 at 05:03:19PM +0200, Bartosz Golaszewski wrote:
> From: Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
> 
> By far the most common way of looking up GPIO devices is using their
> label. Provide a helpers for that to avoid every user implementing their
> own matching function.

...

> +static int gpio_chip_match_by_label(struct gpio_chip *gc, void *label)
> +{
> +	return gc->label && !strcmp(gc->label, label);
> +}

I am still wondering if we can oblige providers to have label to be non-empty.

-- 
With Best Regards,
Andy Shevchenko