linux-kernel - Re: [PATCH v2] gpiolib: Pass consumer device through to core in devm_fwnode_gpiod_get

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Message-ID: <CAMRc=McvYEuK-0bfF67qDbb5FS017NcMkOGaLtWucx3LYL0DMQ@mail.gmail.com>
Date: Tue, 27 Feb 2024 14:18:22 +0100
From: Bartosz Golaszewski <brgl@...ev.pl>
To: Stephen Boyd <swboyd@...omium.org>
Cc: Linus Walleij <linus.walleij@...aro.org>, linux-kernel@...r.kernel.org, 
	patches@...ts.linux.dev, linux-gpio@...r.kernel.org, 
	Dmitry Torokhov <dmitry.torokhov@...il.com>
Subject: Re: [PATCH v2] gpiolib: Pass consumer device through to core in devm_fwnode_gpiod_get_index()

On Fri, Feb 23, 2024 at 7:52 AM Stephen Boyd <swboyd@...omium.org> wrote:
>
> This devm API takes a consumer device as an argument to setup the devm
> action, but throws it away when calling further into gpiolib. This leads
> to odd debug messages like this:
>
>  (NULL device *): using DT '/gpio-keys/switch-pen-insert' for '(null)' GPIO lookup
>
> Let's pass the consumer device down, by directly calling what
> fwnode_gpiod_get_index() calls but pass the device used for devm. This
> changes the message to look like this instead:
>
>  gpio-keys gpio-keys: using DT '/gpio-keys/switch-pen-insert' for '(null)' GPIO lookup
>
> Note that callers of fwnode_gpiod_get_index() will still see the NULL
> device pointer debug message, but there's not much we can do about that
> because the API doesn't take a struct device.
>
> Cc: Dmitry Torokhov <dmitry.torokhov@...il.com>
> Fixes: 8eb1f71e7acc ("gpiolib: consolidate GPIO lookups")
> Signed-off-by: Stephen Boyd <swboyd@...omium.org>
> ---

Applied, thanks!

Bart