tree: https://git.kernel.org/pub/scm/linux/kernel/git/robh/linux.git for-kernelci head: 0e59c9b64d3363b98201fc040101f8ff62c7eafb commit: e12887def507246bafed1c9b1b7f4f03ab225da5 [1/9] serial: lantiq: Remove usage of of_irq_to_resource_table()/of_irq_get() config: i386-randconfig-m021-20211210 (https://download.01.org/0day-ci/archive/20211214/202112141920.cCz4wG5n-lk...) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; smatch warnings: drivers/tty/serial/lantiq.c:732 fetch_irq_lantiq() warn: unsigned 'ltq_port->tx_irq' is never less than zero. drivers/tty/serial/lantiq.c:735 fetch_irq_lantiq() warn: unsigned 'ltq_port->rx_irq' is never less than zero. drivers/tty/serial/lantiq.c:738 fetch_irq_lantiq() warn: unsigned 'ltq_port->err_irq' is never less than zero. vim +732 drivers/tty/serial/lantiq.c 725 726 static int fetch_irq_lantiq(struct device *dev, struct ltq_uart_port *ltq_port) 727 { 728 struct uart_port *port = &ltq_port->port; 729 struct platform_device *pdev = to_platform_device(dev); 730 731 ltq_port->tx_irq = platform_get_irq(pdev, 0); 733 return ltq_port->tx_irq; 734 ltq_port->rx_irq = platform_get_irq(pdev, 1); 736 return ltq_port->rx_irq; 737 ltq_port->err_irq = platform_get_irq(pdev, 2); 739 return ltq_port->err_irq; 740 741 port->irq = ltq_port->tx_irq; 742 743 return 0; 744 } 745 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org