linux-kernel - Missing removal of sysfs attributes in gpiolib

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Message-ID: <20130828175717.GA7493@roeck-us.net>
Date:	Wed, 28 Aug 2013 10:57:17 -0700
From:	Guenter Roeck <linux@...ck-us.net>
To:	linux-kernel@...r.kernel.org
Cc:	Grant Likely <grant.likely@...aro.org>,
	Linus Walleij <linus.walleij@...aro.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: Missing removal of sysfs attributes in gpiolib

Hi,

I noticed that gpiolib does not explicitly remove the sysfs attributes it
created when exporting a gpio pin when the pin is unexported, ie when the
associated device is removed.

Are those attributes auto-removed when device_unregister() is called ?

Sorry if this is a dumb question - I have not noticed this anywhere else,
and I don't seem to be able to find the code actually performing auto-removal
of manually created attributes, so I wonder if this is a bug or intentional.

Thanks,
Guenter
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