staging: comedi: vmk80xx: make sure private data is clean when detached
Currently the private data used in this driver is stored in a static array. During the usb (*probe) and empty location is found in this array for use by the usb device. Some initialization of the private data is then done before comedi_usb_auto_config() is called to allow the comedi core to attach its comedi_device to the usb device. The (*probe) can fail for various reasons. If it does, make sure that the private data is clean before returning an error. The usb (*disconnect) simply calls comedi_usb_auto_unconfig() to allow the comedi core to disconnect its comedi_device from the usb device. Since the private data points to the static array it cannot be kfree'ed during the detach. Instead make sure it clean before leaving the detach. 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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