tree: https://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can-next.git testing head: 32eb12586955cfd84ece37ecfd7be72965ba1a30 commit: 32eb12586955cfd84ece37ecfd7be72965ba1a30 [13/13] can: flexcan: add CAN wakeup function for i.MX8QM config: x86_64-randconfig-s022-20201111 (attached as .config) compiler: gcc-9 (Debian 9.3.0-15) 9.3.0 reproduce: # apt-get install sparse # sparse version: v0.6.3-106-gd020cf33-dirty # https://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can-next.git/co... git remote add mkl-can-next https://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can-next.git git fetch --no-tags mkl-can-next testing git checkout 32eb12586955cfd84ece37ecfd7be72965ba1a30 # save the attached .config to linux build tree make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=x86_64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): ld: drivers/net/can/flexcan.o: in function `flexcan_setup_stop_mode_scfw': ld: drivers/net/can/flexcan.o: in function `flexcan_stop_mode_enable_scfw': vim +1949 drivers/net/can/flexcan.c 1931 1932 static int flexcan_setup_stop_mode_scfw(struct platform_device *pdev) 1933 { 1934 struct net_device *dev = platform_get_drvdata(pdev); 1935 struct flexcan_priv *priv; 1936 u8 scu_idx; 1937 int ret; 1938 1939 ret = of_property_read_u8(pdev->dev.of_node, "fsl,scu-index", &scu_idx); 1940 if (ret < 0) { 1941 dev_dbg(&pdev->dev, "failed to get scu index\n"); 1942 return ret; 1943 } 1944 1945 priv = netdev_priv(dev); 1946 priv->scu_idx = scu_idx; 1947 1948 /* this function could be defered probe, return -EPROBE_DEFER */ 1950 } 1951 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org