[PATCH v2] USB: usb-skeleton.c: fix compilation error and restore kref_put on fail in skel_open

[Oliver Neukum]

On Wednesday 10 October 2012 12:32:54 Constantine Shulyupin wrote:
> From: Constantine Shulyupin <const at MakeLinux.com>
> 
> Function skel_open increments usage count for the device with kref_get and the usage count should be decremented on the function failure.
> 
> Some last changes in function skel_open and finally commit
> 52a7499 Revert "USB: usb-skeleton.c: fix open/disconnect race"
> introduced a bug in function skel_open, which this patch fixes.
> 
> --
> Changelog:
> -- Fixed accordinly feedback of Oliver Neukum oneukum at suse.de: also need to drop the lock.

Well, touching file->private_data is not nice. It is correct, but
really dirty. The skeleton driver should be nice. Could you introduce
a second label for goto at the right place?

	Regards
		Oliver