staging: comedi: amplc_pc236: check bus type in detach routine
When detaching the device in pc236_detach() mirror the bus type checks performed by pc236_attach(). The existing tests are safe but rely on dev->iobase being 0 when comedi_to_pci_dev(dev) is NULL. Signed-off-by:Ian Abbott <abbotti@mev.co.uk> Signed-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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