linux-kernel - Re: [PATCH v1 3/4] devres: Add devm_remove_action

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Message-ID: <Z7dM6B-SFQ5Q77zy@smile.fi.intel.com>
Date: Thu, 20 Feb 2025 17:40:24 +0200
From: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To: Raag Jadav <raag.jadav@...el.com>
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Zijun Hu <quic_zijuhu@...cinc.com>,
	Bartosz Golaszewski <bartosz.golaszewski@...aro.org>,
	linux-kernel@...r.kernel.org, linux-gpio@...r.kernel.org,
	"Rafael J. Wysocki" <rafael@...nel.org>,
	Danilo Krummrich <dakr@...nel.org>,
	Linus Walleij <linus.walleij@...aro.org>,
	Bartosz Golaszewski <brgl@...ev.pl>
Subject: Re: [PATCH v1 3/4] devres: Add devm_remove_action_optional() helper

On Thu, Feb 20, 2025 at 05:30:07PM +0200, Raag Jadav wrote:
> On Thu, Feb 20, 2025 at 03:44:59PM +0200, Andy Shevchenko wrote:

...

> > +/* Same as devm_remove_action(), but doesn't WARN() if action wasn't added before */
> > +static inline
> > +void devm_remove_action_optional(struct device *dev, void (*action)(void *), void *data)
> > +{
> > +	int ret;
> > +
> > +	ret = devm_remove_action_nowarn(dev, action, data);
> > +	if (ret == -ENOENT)
> > +		return;
> > +
> > +	WARN_ON(ret);
> > +}
> 
> Trying to wrap my head around this one, can't the user simply do
> 
> 	if (devm_is_action_added())
> 		devm_remove_action/_nowarn();

Hmm... Actually it sounds like a good point. I will check
(and I like the idea of dropping this patch).

-- 
With Best Regards,
Andy Shevchenko