tree: https://git.kernel.org/pub/scm/linux/kernel/git/pinctrl/intel.git review-andy head: c25441ca551164c56b34885df3d657e2ea4d623f commit: 9122cda6a325f80564f02b7899cc063009f5e1f9 [18/19] pinctrl: zynqmp: Unify pin naming config: arm64-buildonly-randconfig-r004-20211118 (attached as .config) 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 # install arm64 cross compiling tool for clang build # apt-get install binutils-aarch64-linux-gnu # https://git.kernel.org/pub/scm/linux/kernel/git/pinctrl/intel.git/commit/... git remote add pinctrl-intel https://git.kernel.org/pub/scm/linux/kernel/git/pinctrl/intel.git git fetch --no-tags pinctrl-intel review-andy git checkout 9122cda6a325f80564f02b7899cc063009f5e1f9 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 ARCH=arm64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): if (IS_ERR(pin->name)) ^~~ drivers/pinctrl/pinctrl-zynqmp.c:811:37: note: initialize the variable 'pin' to silence this warning struct pinctrl_pin_desc *pins, *pin; ^ = NULL 1 warning generated. vim +/pin +825 drivers/pinctrl/pinctrl-zynqmp.c 794 795 /** 796 * zynqmp_pinctrl_prepare_pin_desc() - prepare pin description info 797 * @dev: Device pointer. 798 * @zynqmp_pins: Pin information. 799 * @npins: Number of pins. 800 * 801 * Query number of pins information from firmware and prepare pin 802 * description containing pin number and pin name. 803 * 804 * Return: 0 on success else error code. 805 */ 806 static int zynqmp_pinctrl_prepare_pin_desc(struct device *dev, 807 const struct pinctrl_pin_desc 808 **zynqmp_pins, 809 unsigned int *npins) 810 { 811 struct pinctrl_pin_desc *pins, *pin; 812 char **pin_names; 813 int ret; 814 int i; 815 816 ret = zynqmp_pinctrl_get_num_pins(npins); 817 if (ret) 818 return ret; 819 820 pins = devm_kzalloc(dev, sizeof(*pins) * *npins, GFP_KERNEL); 821 if (!pins) 822 return -ENOMEM; 823 824 pin_names = devm_kasprintf_strarray(dev, ZYNQMP_PIN_PREFIX, *npins); 826 return PTR_ERR(pin_names); 827 828 for (i = 0; i < *npins; i++) { 829 pin = &pins[i]; 830 pin->number = i; 831 pin->name = pin_names[i]; 832 } 833 834 *zynqmp_pins = pins; 835 836 return 0; 837 } 838 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org