linux-kernel - Re: [PATCH 01/14] Input: samsung-keypad - switch to using devm_clk_get

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <ZsNauAfnX8-PoVAN@google.com>
Date: Mon, 19 Aug 2024 07:46:16 -0700
From: Dmitry Torokhov <dmitry.torokhov@...il.com>
To: Krzysztof Kozlowski <krzk@...nel.org>
Cc: Arnd Bergmann <arnd@...db.de>, Mark Brown <broonie@...nel.org>,
	linux-input@...r.kernel.org, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-samsung-soc@...r.kernel.org, patches@...nsource.cirrus.com
Subject: Re: [PATCH 01/14] Input: samsung-keypad - switch to using
 devm_clk_get_prepared()

On Mon, Aug 19, 2024 at 02:51:09PM +0200, Krzysztof Kozlowski wrote:
> On Sun, Aug 18, 2024 at 09:57:58PM -0700, Dmitry Torokhov wrote:
> > Switch to using devm_clk_get_prepared() instead of combining
> > devm_clk_get() with clk_prepare(), which simplifies the code and
> > ensures that the clock is unprepared at the right time relative to
> > releasing other managed resources.
> 
> ...
> 
> >  	device_init_wakeup(&pdev->dev, pdata->wakeup);
> > @@ -439,20 +433,12 @@ static int samsung_keypad_probe(struct platform_device *pdev)
> >  
> >  err_disable_runtime_pm:
> >  	pm_runtime_disable(&pdev->dev);
> > -err_unprepare_clk:
> > -	clk_unprepare(keypad->clk);
> >  	return error;
> >  }
> >  
> >  static void samsung_keypad_remove(struct platform_device *pdev)
> >  {
> > -	struct samsung_keypad *keypad = platform_get_drvdata(pdev);
> > -
> >  	pm_runtime_disable(&pdev->dev);
> > -
> > -	input_unregister_device(keypad->input_dev);
> 
> This looks unrelated.

It actually is related: with clk moved to devm we no longer need to
unregister input device by hand to keep the right ordering and we can
rely on devm to clean the input device as well (it already is being
allocated with devm_input_allocate_device()).

Thanks.

-- 
Dmitry