staging: comedi: 8255: rename cb_arg and cb_func
The 8255's private data variables cb_arg and cb_func are actually the iobase for the 8255 device and the pointer to the io function to access the device. Rename them as such to improve the readability of the driver. Signed-off-by: NH Hartley Sweeten <hsweeten@visionengravers.com> Cc: Ian Abbott <abbotti@mev.co.uk> Cc: Frank Mori Hess <fmhess@users.sourceforge.net> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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