Hi Soren, [auto build test WARNING on v4.3-rc7] [also WARNING on: next-20151103] url: https://github.com/0day-ci/linux/commits/Soren-Brinkmann/tty-xuartps-Beautify-read-modify-writes/20151104-082546 base: https://github.com/0day-ci/linux Soren-Brinkmann/tty-xuartps-Beautify-read-modify-writes/20151104-082546 config: i386-allmodconfig (attached as .config) reproduce: # save the attached .config to linux build tree make ARCH=i386 All warnings (new ones prefixed by >>): drivers/tty/serial/xilinx_uartps.c: In function 'cdns_uart_poll_get_char': >> drivers/tty/serial/xilinx_uartps.c:948:6: warning: unused variable 'imr' [-Wunused-variable] u32 imr; ^ drivers/tty/serial/xilinx_uartps.c: In function 'cdns_uart_poll_put_char': drivers/tty/serial/xilinx_uartps.c:968:6: warning: unused variable 'imr' [-Wunused-variable] u32 imr; ^ vim +/imr +948 drivers/tty/serial/xilinx_uartps.c 19038ad9f Lars-Peter Clausen 2014-11-05 932 19f22efdb Thomas Betker 2015-03-12 933 val = readl(port->membase + CDNS_UART_MODEMCR_OFFSET); 19038ad9f Lars-Peter Clausen 2014-11-05 934 19038ad9f Lars-Peter Clausen 2014-11-05 935 val &= ~(CDNS_UART_MODEMCR_RTS | CDNS_UART_MODEMCR_DTR); 19038ad9f Lars-Peter Clausen 2014-11-05 936 19038ad9f Lars-Peter Clausen 2014-11-05 937 if (mctrl & TIOCM_RTS) 19038ad9f Lars-Peter Clausen 2014-11-05 938 val |= CDNS_UART_MODEMCR_RTS; 19038ad9f Lars-Peter Clausen 2014-11-05 939 if (mctrl & TIOCM_DTR) 19038ad9f Lars-Peter Clausen 2014-11-05 940 val |= CDNS_UART_MODEMCR_DTR; 19038ad9f Lars-Peter Clausen 2014-11-05 941 19f22efdb Thomas Betker 2015-03-12 942 writel(val, port->membase + CDNS_UART_MODEMCR_OFFSET); 61ec90169 John Linn 2011-04-30 943 } 61ec90169 John Linn 2011-04-30 944 6ee04c6c5 Vlad Lungu 2013-10-17 945 #ifdef CONFIG_CONSOLE_POLL d9bb3fb12 Soren Brinkmann 2014-04-04 946 static int cdns_uart_poll_get_char(struct uart_port *port) 6ee04c6c5 Vlad Lungu 2013-10-17 947 { 6ee04c6c5 Vlad Lungu 2013-10-17 @948 u32 imr; 6ee04c6c5 Vlad Lungu 2013-10-17 949 int c; c2fd7b9d5 Soren Brinkmann 2015-11-03 950 unsigned long flags; 6ee04c6c5 Vlad Lungu 2013-10-17 951 c2fd7b9d5 Soren Brinkmann 2015-11-03 952 spin_lock_irqsave(&port->lock, flags); 6ee04c6c5 Vlad Lungu 2013-10-17 953 6ee04c6c5 Vlad Lungu 2013-10-17 954 /* Check if FIFO is empty */ 19f22efdb Thomas Betker 2015-03-12 955 if (readl(port->membase + CDNS_UART_SR_OFFSET) & CDNS_UART_SR_RXEMPTY) 6ee04c6c5 Vlad Lungu 2013-10-17 956 c = NO_POLL_CHAR; :::::: The code at line 948 was first introduced by commit :::::: 6ee04c6c5488b2b7fdfa22c771c127411f86e610 tty: xuartps: Add polled mode support for xuartps :::::: TO: Vlad Lungu <vlad.lungu@xxxxxxxxxxxxx> :::::: CC: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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