Re: Missing removal of sysfs attributes in gpiolib

[Greg Kroah-Hartman]

On Wed, Aug 28, 2013 at 10:57:17AM -0700, Guenter Roeck wrote:
> 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 ?

Yes they are.

> 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.

Hm, I thought this was listed in the kobject.txt documentation file, but
I don't seem to find it there.

But, ideally you aren't creating individual attributes directly, you are
using attribute groups for the device, right?

thanks,

greg k-h
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