Use pci_is_enabled() in the "find pci device" function to determine if
the found pci device is not in use and move the comedi_pci_enable() call
into the attach.
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>