Re: [PATCH 4/4] tty: serial: 8250: Add support for MOXA PCIe boards to switch interface between RS422/RS485

[kernel test robot <lkp@intel.com>]

Hi Crescent,

kernel test robot noticed the following build errors:

[auto build test ERROR on tty/tty-testing]
[also build test ERROR on tty/tty-next tty/tty-linus usb/usb-testing usb/usb-next usb/usb-linus linus/master v6.6-rc4 next-20230929]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Crescent-CY-Hsieh/tty-serial-8250-Cleanup-MOXA-configurations-in-8250_pci-c/20231002-095945
base:   https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty.git tty-testing
patch link:    https://lore.kernel.org/r/20231002015702.30509-5-crescentcy.hsieh%40moxa.com
patch subject: [PATCH 4/4] tty: serial: 8250: Add support for MOXA PCIe boards to switch interface between RS422/RS485
config: alpha-defconfig (https://download.01.org/0day-ci/archive/20231002/202310021306.ewtlC1QY-lkp@intel.com/config)
compiler: alpha-linux-gcc (GCC) 13.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231002/202310021306.ewtlC1QY-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202310021306.ewtlC1QY-lkp@intel.com/

All errors (new ones prefixed by >>):

   drivers/tty/serial/8250/8250_pci.c: In function 'pci_moxa_setup':
>> drivers/tty/serial/8250/8250_pci.c:2010:50: error: 'SER_RE422_ENABLED' undeclared (first use in this function); did you mean 'SER_RS422_ENABLED'?
    2010 |                         port->port.rs485.flags = SER_RE422_ENABLED;
         |                                                  ^~~~~~~~~~~~~~~~~
         |                                                  SER_RS422_ENABLED
   drivers/tty/serial/8250/8250_pci.c:2010:50: note: each undeclared identifier is reported only once for each function it appears in


vim +2010 drivers/tty/serial/8250/8250_pci.c

  1990	
  1991	static int pci_moxa_setup(struct serial_private *priv,
  1992				  const struct pciserial_board *board,
  1993				  struct uart_8250_port *port,
  1994				  int idx)
  1995	{
  1996		struct pci_dev *dev = priv->dev;
  1997		unsigned short device = dev->device;
  1998		unsigned int bar = FL_GET_BASE(board->flags);
  1999		int offset;
  2000	
  2001		/*
  2002		 * For the device IDs of MOXA PCIe boards match the pattern 0x*3** and 0x*1**,
  2003		 * these boards support switching interface between RS422/RS485 using TIOCSRS485.
  2004		 */
  2005		if ((device & 0x0F00) == 0x0100 || (device & 0x0F00) == 0x0300) {
  2006			port->port.rs485_config = pci_moxa_rs485_config;
  2007			port->port.rs485_supported = pci_moxa_rs485_supported;
  2008	
  2009			if ((device & 0x0F00) == 0x0300)
> 2010				port->port.rs485.flags = SER_RE422_ENABLED;
  2011		}
  2012		if (board->num_ports == 4 && idx == 3)
  2013			offset = 7 * board->uart_offset;
  2014		else
  2015			offset = idx * board->uart_offset;
  2016	
  2017		return setup_port(priv, port, bar, offset, 0);
  2018	}
  2019	

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