Hi Huacai, I love your patch! Perhaps something to improve: [auto build test WARNING on tip/irq/core] [also build test WARNING on linux/master linus/master v5.15-rc5 next-20211011] [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/Huacai-Chen/irqchip-Add-LoongArc... base: https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git b70e13885cf63b6f99cbd9a1dbb6beaa2622bf68 config: mips-loongson2k_defconfig (attached as .config) compiler: mips64el-linux-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/c2e672fab9842d2cfc2876a27ec4513c7... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Huacai-Chen/irqchip-Add-LoongArch-related-irqchip-drivers/20211011-164738 git checkout c2e672fab9842d2cfc2876a27ec4513c75347fdf # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross ARCH=mips 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 >>): 234 | int pch_msi_of_init(struct device_node *node, struct device_node *parent) | ^~~~~~~~~~~~~~~ vim +/pch_msi_of_init +234 drivers/irqchip/irq-loongson-pch-msi.c 233 235 { 236 int err; 237 int irq_base, irq_count; 238 struct resource res; 239 struct irq_domain *parent_domain; 240 241 parent_domain = irq_find_host(parent); 242 if (!parent_domain) { 243 pr_err("Failed to find the parent domain\n"); 244 return -ENXIO; 245 } 246 247 if (of_address_to_resource(node, 0, &res)) { 248 pr_err("Failed to allocate resource\n"); 249 return -EINVAL; 250 } 251 252 if (of_property_read_u32(node, "loongson,msi-base-vec", &irq_base)) { 253 pr_err("Unable to parse MSI vec base\n"); 254 return -EINVAL; 255 } 256 257 if (of_property_read_u32(node, "loongson,msi-num-vecs", &irq_count)) { 258 pr_err("Unable to parse MSI vec number\n"); 259 return -EINVAL; 260 } 261 262 err = pch_msi_init(res.start, irq_base, irq_count, parent_domain, of_node_to_fwnode(node)); 263 if (err < 0) 264 return err; 265 266 return 0; 267 } 268 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org