tree: https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty.git tty-testing head: b9c8b7fc252cd8e7e629f14bb8a68d54889470da commit: 2a41bc2a2b0533afca11335ed7e636c62623d7c6 [3/22] tty: serial: fsl_lpuart: add polled console functions config: sparc64-allmodconfig (attached as .config) compiler: sparc64-linux-gnu-gcc (Debian 6.1.1-9) 6.1.1 20160705 reproduce: wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross git checkout 2a41bc2a2b0533afca11335ed7e636c62623d7c6 # save the attached .config to linux build tree make.cross ARCH=sparc64 All warnings (new ones prefixed by >>): drivers/tty/serial/fsl_lpuart.c: In function 'lpuart_poll_put_char': >> drivers/tty/serial/fsl_lpuart.c:476:15: warning: unused variable 'status' [-Wunused-variable] unsigned int status; ^~~~~~ vim +/status +476 drivers/tty/serial/fsl_lpuart.c 460 readb(sport->port.membase + UARTDR); 461 writeb(UARTSFIFO_RXUF, sport->port.membase + UARTSFIFO); 462 } 463 464 writeb(0, sport->port.membase + UARTTWFIFO); 465 writeb(1, sport->port.membase + UARTRWFIFO); 466 467 /* Enable Rx and Tx */ 468 writeb(UARTCR2_RE | UARTCR2_TE, sport->port.membase + UARTCR2); 469 spin_unlock_irqrestore(&sport->port.lock, flags); 470 471 return 0; 472 } 473 474 static void lpuart_poll_put_char(struct uart_port *port, unsigned char c) 475 { > 476 unsigned int status; 477 478 /* drain */ 479 while (!(readb(port->membase + UARTSR1) & UARTSR1_TDRE)) 480 barrier(); 481 482 writeb(c, port->membase + UARTDR); 483 } 484 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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