Hi Souradeep, Thank you for the patch! Yet something to improve: [auto build test ERROR on usb/usb-testing] [also build test ERROR on robh/for-next linus/master v5.15-rc3 next-20210922] [cannot apply to balbi-usb/testing/next] [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] url: https://github.com/0day-ci/linux/commits/Souradeep-Chowdhury/Add-Embedded-USB-Debugger-EUD-driver/20211004-191901 base: https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing config: arc-allyesconfig (attached as .config) compiler: arceb-elf-gcc (GCC) 11.2.0 reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # https://github.com/0day-ci/linux/commit/4f53df1d9b6786f951384f59e3ffa7fed1817a2d git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Souradeep-Chowdhury/Add-Embedded-USB-Debugger-EUD-driver/20211004-191901 git checkout 4f53df1d9b6786f951384f59e3ffa7fed1817a2d # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross ARCH=arc If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>): drivers/usb/dwc3/drd.c: In function 'dwc3_register_eud': >> drivers/usb/dwc3/drd.c:171:54: error: variable 'con_np' set but not used [-Werror=unused-but-set-variable] 171 | struct device_node *np = dev->of_node, *con_np; | ^~~~~~ cc1: all warnings being treated as errors vim +/con_np +171 drivers/usb/dwc3/drd.c 167 168 static int dwc3_register_eud(struct dwc3 *dwc) 169 { 170 struct device *dev = dwc->dev; > 171 struct device_node *np = dev->of_node, *con_np; 172 int ret; 173 174 con_np = of_get_child_by_name(np, "eud_usb_connector"); 175 if (!np) { 176 dev_dbg(dev, "no usb_connector child node specified\n"); 177 return 0; 178 } 179 180 ret = of_platform_populate(np, NULL, NULL, dev); 181 if (ret) { 182 dev_err(dev, "failed to register usb_connector - %d\n", ret); 183 return ret; 184 } 185 186 return 0; 187 } 188 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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