linux-kernel - Re: [PATCHv2 3/3] Input: twl4030-pwrbutton: simplify driver using devm

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] [day] [month] [year] [list]

Message-ID: <20131023163007.GD24448@blackmetal.musicnaut.iki.fi>
Date:	Wed, 23 Oct 2013 19:30:07 +0300
From:	Aaro Koskinen <aaro.koskinen@....fi>
To:	Sebastian Reichel <sre@...ian.org>
Cc:	Sebastian Reichel <sre@...g0.de>,
	Dmitry Torokhov <dmitry.torokhov@...il.com>,
	Grant Likely <grant.likely@...aro.org>,
	Rob Herring <rob.herring@...xeda.com>,
	Peter Ujfalusi <peter.ujfalusi@...com>,
	Sachin Kamat <sachin.kamat@...aro.org>,
	linux-input@...r.kernel.org, linux-kernel@...r.kernel.org,
	devicetree@...r.kernel.org
Subject: Re: [PATCHv2 3/3] Input: twl4030-pwrbutton: simplify driver using
 devm_*

Hi,

On Wed, Oct 23, 2013 at 05:01:22PM +0200, Sebastian Reichel wrote:
>  static int __exit twl4030_pwrbutton_remove(struct platform_device *pdev)
>  {
>  	struct input_dev *pwr = platform_get_drvdata(pdev);
> -	int irq = platform_get_irq(pdev, 0);
>  
> -	free_irq(irq, pwr);
>  	input_unregister_device(pwr);

You need convert the driver to use devm_input_allocate_device()
first. Otherwise driver will crash the kernel here if you get interrupt
after unregistering the device.

A.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/