_first             55 drivers/staging/comedi/drivers/pcl816.c #define PCL816_MUX_SCAN(_first, _last)		(((_last) << 4) | (_first))
_first            113 drivers/staging/comedi/drivers/pcl818.c #define PCL818_MUX_SCAN(_first, _last)		(((_last) << 4) | (_first))