Hi Jarkko, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on johan-usb-serial/usb-next] [also build test WARNING on johan-usb-serial/usb-linus linus/master v6.3-rc2 next-20230314] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Jarkko-Sonninen/USB-serial-xr-Add-TIOCGRS485-and-TIOCSRS485-ioctls/20230313-163032 base: https://git.kernel.org/pub/scm/linux/kernel/git/johan/usb-serial.git usb-next patch link: https://lore.kernel.org/r/20230313082734.886890-1-kasper%40iki.fi patch subject: [PATCH v2] USB: serial: xr: Add TIOCGRS485 and TIOCSRS485 ioctls config: sparc64-randconfig-s031-20230312 (https://download.01.org/0day-ci/archive/20230314/202303141402.sfS74rp6-lkp@xxxxxxxxx/config) compiler: sparc64-linux-gcc (GCC) 12.1.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # apt-get install sparse # sparse version: v0.6.4-39-gce1a6720-dirty # https://github.com/intel-lab-lkp/linux/commit/3470fe1d77e0edf25fc417f516491abbd812dc41 git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Jarkko-Sonninen/USB-serial-xr-Add-TIOCGRS485-and-TIOCSRS485-ioctls/20230313-163032 git checkout 3470fe1d77e0edf25fc417f516491abbd812dc41 # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=sparc64 olddefconfig COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=sparc64 SHELL=/bin/bash drivers/usb/serial/ kernel/trace/ If you fix the issue, kindly add following tag where applicable | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Link: https://lore.kernel.org/oe-kbuild-all/202303141402.sfS74rp6-lkp@xxxxxxxxx/ sparse warnings: (new ones prefixed by >>) >> drivers/usb/serial/xr_serial.c:870:37: sparse: sparse: Using plain integer as NULL pointer vim +870 drivers/usb/serial/xr_serial.c 853 854 static int xr_set_rs485_config(struct tty_struct *tty, 855 unsigned long __user *argp) 856 { 857 struct usb_serial_port *port = tty->driver_data; 858 struct xr_data *data = usb_get_serial_port_data(port); 859 struct serial_rs485 rs485; 860 unsigned long flags; 861 862 if (copy_from_user(&rs485, argp, sizeof(rs485))) 863 return -EFAULT; 864 865 dev_dbg(tty->dev, "Flags %02x\n", rs485.flags); 866 rs485.flags &= SER_RS485_ENABLED; 867 spin_lock_irqsave(&data->lock, flags); 868 memcpy(&data->rs485, &rs485, sizeof(rs485)); 869 spin_unlock_irqrestore(&data->lock, flags); > 870 xr_set_flow_mode(tty, port, 0); 871 872 if (copy_to_user(argp, &data->rs485, sizeof(data->rs485))) 873 return -EFAULT; 874 875 return 0; 876 } 877 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests
