[tty:tty-testing 31/42] drivers/mmc/core/sdio_uart.c:253:16: error: implicit declaration of function 'UART_LCR_WLEN'; did you mean 'UART_LCR_WLEN5'?

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

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty.git tty-testing
head:   a6d8f09319fff9e6e7a91cadb19923b8cb2573e0
commit: b6f8eaea0cf1afe2500f8af7b6cc805647fe4889 [31/42] sdio_uart: make use of UART_LCR_WLEN() + tty_get_char_size()
config: arc-randconfig-r043-20220225 (https://download.01.org/0day-ci/archive/20220226/202202260105.p77piygB-lkp@intel.com/config)
compiler: arceb-elf-gcc (GCC) 11.2.0
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty.git/commit/?id=b6f8eaea0cf1afe2500f8af7b6cc805647fe4889
        git remote add tty https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty.git
        git fetch --no-tags tty tty-testing
        git checkout b6f8eaea0cf1afe2500f8af7b6cc805647fe4889
        # save the config file to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=arc SHELL=/bin/bash

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

   drivers/mmc/core/sdio_uart.c: In function 'sdio_uart_change_speed':
>> drivers/mmc/core/sdio_uart.c:253:16: error: implicit declaration of function 'UART_LCR_WLEN'; did you mean 'UART_LCR_WLEN5'? [-Werror=implicit-function-declaration]
     253 |         cval = UART_LCR_WLEN(tty_get_char_size(termios->c_cflag));
         |                ^~~~~~~~~~~~~
         |                UART_LCR_WLEN5
   cc1: some warnings being treated as errors


vim +253 drivers/mmc/core/sdio_uart.c

   245	
   246	static void sdio_uart_change_speed(struct sdio_uart_port *port,
   247					   struct ktermios *termios,
   248					   struct ktermios *old)
   249	{
   250		unsigned char cval, fcr = 0;
   251		unsigned int baud, quot;
   252	
 > 253		cval = UART_LCR_WLEN(tty_get_char_size(termios->c_cflag));
   254	
   255		if (termios->c_cflag & CSTOPB)
   256			cval |= UART_LCR_STOP;
   257		if (termios->c_cflag & PARENB)
   258			cval |= UART_LCR_PARITY;
   259		if (!(termios->c_cflag & PARODD))
   260			cval |= UART_LCR_EPAR;
   261	
   262		for (;;) {
   263			baud = tty_termios_baud_rate(termios);
   264			if (baud == 0)
   265				baud = 9600;  /* Special case: B0 rate. */
   266			if (baud <= port->uartclk)
   267				break;
   268			/*
   269			 * Oops, the quotient was zero.  Try again with the old
   270			 * baud rate if possible, otherwise default to 9600.
   271			 */
   272			termios->c_cflag &= ~CBAUD;
   273			if (old) {
   274				termios->c_cflag |= old->c_cflag & CBAUD;
   275				old = NULL;
   276			} else
   277				termios->c_cflag |= B9600;
   278		}
   279		quot = (2 * port->uartclk + baud) / (2 * baud);
   280	
   281		if (baud < 2400)
   282			fcr = UART_FCR_ENABLE_FIFO | UART_FCR_TRIGGER_1;
   283		else
   284			fcr = UART_FCR_ENABLE_FIFO | UART_FCR_R_TRIG_10;
   285	
   286		port->read_status_mask = UART_LSR_OE | UART_LSR_THRE | UART_LSR_DR;
   287		if (termios->c_iflag & INPCK)
   288			port->read_status_mask |= UART_LSR_FE | UART_LSR_PE;
   289		if (termios->c_iflag & (BRKINT | PARMRK))
   290			port->read_status_mask |= UART_LSR_BI;
   291	
   292		/*
   293		 * Characters to ignore
   294		 */
   295		port->ignore_status_mask = 0;
   296		if (termios->c_iflag & IGNPAR)
   297			port->ignore_status_mask |= UART_LSR_PE | UART_LSR_FE;
   298		if (termios->c_iflag & IGNBRK) {
   299			port->ignore_status_mask |= UART_LSR_BI;
   300			/*
   301			 * If we're ignoring parity and break indicators,
   302			 * ignore overruns too (for real raw support).
   303			 */
   304			if (termios->c_iflag & IGNPAR)
   305				port->ignore_status_mask |= UART_LSR_OE;
   306		}
   307	
   308		/*
   309		 * ignore all characters if CREAD is not set
   310		 */
   311		if ((termios->c_cflag & CREAD) == 0)
   312			port->ignore_status_mask |= UART_LSR_DR;
   313	
   314		/*
   315		 * CTS flow control flag and modem status interrupts
   316		 */
   317		port->ier &= ~UART_IER_MSI;
   318		if ((termios->c_cflag & CRTSCTS) || !(termios->c_cflag & CLOCAL))
   319			port->ier |= UART_IER_MSI;
   320	
   321		port->lcr = cval;
   322	
   323		sdio_out(port, UART_IER, port->ier);
   324		sdio_out(port, UART_LCR, cval | UART_LCR_DLAB);
   325		sdio_out(port, UART_DLL, quot & 0xff);
   326		sdio_out(port, UART_DLM, quot >> 8);
   327		sdio_out(port, UART_LCR, cval);
   328		sdio_out(port, UART_FCR, fcr);
   329	
   330		sdio_uart_write_mctrl(port, port->mctrl);
   331	}
   332	

---
0-DAY CI Kernel Test Service, Intel Corporation
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