linux-kernel - Re: [PATCH] backlight: ktd2801: depend on GPIOLIB

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Message-ID: <CACRpkdYm0dNZZvzAZ-VQ+MaHeL7NmGCmCVw42WMx6BFf4Lw0Pw@mail.gmail.com>
Date: Thu, 15 Feb 2024 14:31:37 +0100
From: Linus Walleij <linus.walleij@...aro.org>
To: Duje Mihanović <duje.mihanovic@...le.hr>
Cc: Lee Jones <lee@...nel.org>, Daniel Thompson <daniel.thompson@...aro.org>, 
	Jingoo Han <jingoohan1@...il.com>, Helge Deller <deller@....de>, Arnd Bergmann <arnd@...nel.org>, 
	Karel Balej <balejk@...fyz.cz>, dri-devel@...ts.freedesktop.org, 
	linux-leds@...r.kernel.org, linux-fbdev@...r.kernel.org, 
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] backlight: ktd2801: depend on GPIOLIB

On Tue, Feb 13, 2024 at 7:13 PM Duje Mihanović <duje.mihanovic@...le.hr> wrote:

> LEDS_EXPRESSWIRE depends on GPIOLIB, and so must anything selecting it:
>
> WARNING: unmet direct dependencies detected for LEDS_EXPRESSWIRE
>   Depends on [n]: NEW_LEDS [=y] && GPIOLIB [=n]
>   Selected by [m]:
>   - BACKLIGHT_KTD2801 [=m] && HAS_IOMEM [=y] && BACKLIGHT_CLASS_DEVICE [=m]
>
> Fixes: 66c76c1cd984 ("backlight: Add Kinetic KTD2801 backlight support")
> Signed-off-by: Duje Mihanović <duje.mihanovic@...le.hr>

Acked-by: Linus Walleij <linus.walleij@...aro.org>

Technically you can also select GPIOLIB, because it is available on
all platforms, so it may be easier for users, but then you never know
which GPIOs you get in practice.

Yours,
Linus Walleij