staging: comedi: usbdux: remove usb_device back pointer from private data
authorH Hartley Sweeten <hsweeten@visionengravers.com>
Wed, 24 Jul 2013 21:16:24 +0000 (14:16 -0700)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Thu, 25 Jul 2013 20:15:37 +0000 (13:15 -0700)
The usb_device can be found when needed using the comedi_to_usb_dev()
helper. Use that instead the remove the back pointer from the private
data.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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