Hi Greg, I just fixed compile warning but fail to push to remote REPO: fatal: unable to access 'https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty.git/': The requested URL returned error: 403 So I attach patch for you review. Sincerely, Jason -----Original Message----- From: kernel test robot <lkp(a)intel.com&gt; Sent: Friday, June 18, 2021 11:27 PM To: Jason Li <jason.li(a)cortina-access.com&gt; Cc: kbuild-all(a)lists.01.org; linux-serial(a)vger.kernel.org; Greg Kroah-Hartman <gregkh(a)linuxfoundation.org&gt; Subject: [tty:tty-testing 218/218] drivers/tty/serial/serial_cortina-access.c:469:6: warning: no previous prototype for 'cortina_console_write' tree: https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty.git tty-testing head: b61c8bf4694b5115766849378dcb8787ff54e65e commit: b61c8bf4694b5115766849378dcb8787ff54e65e [218/218] tty: serial: Add UART driver for Cortina-Access platform config: m68k-allyesconfig (attached as .config) compiler: m68k-linux-gcc (GCC) 9.3.0 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... 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 b61c8bf4694b5115766849378dcb8787ff54e65e # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=m68k If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): drivers/tty/serial/serial_cortina-access.c:76:27: warning: no previous prototype for 'cortina_uart_get_port' [-Wmissing-prototypes] 76 | struct cortina_uart_port *cortina_uart_get_port(unsigned int index) | ^~~~~~~~~~~~~~~~~~~~~ 469 | void cortina_console_write(struct console *co, const char *s, | ^~~~~~~~~~~~~~~~~~~~~ vim +/cortina_console_write +469 drivers/tty/serial/serial_cortina-access.c 467 468 #ifdef CONFIG_SERIAL_CORTINA_ACCESS_CONSOLE 470 unsigned int count) 471 { 472 struct uart_port *port; 473 struct cortina_uart_port *pca_port; 474 unsigned int i, previous; 475 unsigned long flags; 476 int locked; 477 478 pca_port = cortina_uart_get_port(co->index); 479 port = &pca_port->uart; 480 481 local_irq_save(flags); 482 if (port->sysrq) { 483 locked = 0; 484 } else if (oops_in_progress) { 485 locked = spin_trylock(&port->lock); 486 } else { 487 spin_lock(&port->lock); 488 locked = 1; 489 } 490 491 /* Save current state */ 492 previous = readl(port->membase + IE); 493 /* Disable Tx interrupts so this all goes out in one go */ 494 cortina_uart_stop_tx(port); 495 496 /* Write all the chars */ 497 for (i = 0; i < count; i++) { 498 /* Wait the TX buffer to be empty, which can't take forever */ 499 while (!(readl(port->membase + INFO) & INFO_TX_EMPTY)) 500 cpu_relax(); 501 502 /* Send the char */ 503 writel(*s, port->membase + TX_DAT); 504 505 /* CR/LF stuff */ 506 if (*s++ == '\n') { 507 /* Wait the TX buffer to be empty */ 508 while (!(readl(port->membase + INFO) & INFO_TX_EMPTY)) 509 cpu_relax(); 510 writel('\r', port->membase + TX_DAT); 511 } 512 } 513 514 writel(previous, port->membase + IE); /* Put it all back */ 515 516 if (locked) 517 spin_unlock(&port->lock); 518 local_irq_restore(flags); 519 } 520 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org