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

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Date: Wed, 28 Feb 2024 20:57:40 +0200
From: Andy Shevchenko <andriy.shevchenko@...el.com>
To: Stephen Boyd <swboyd@...omium.org>
Cc: Linus Walleij <linus.walleij@...aro.org>,
	Bartosz Golaszewski <brgl@...ev.pl>, 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 Thu, Feb 22, 2024 at 10:52:53PM -0800, Stephen Boyd 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.

Have you seen this?
https://lore.kernel.org/r/20231019173457.2445119-1-andriy.shevchenko@linux.intel.com

-- 
With Best Regards,
Andy Shevchenko