Hi Huacai, I love your patch! Perhaps something to improve: [auto build test WARNING on linus/master] [also build test WARNING on v6.0-rc1 next-20220815] [cannot apply to soc/for-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#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Huacai-Chen/LoongArch-Use-TLB-for-ioremap/20220815-204842 base: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 568035b01cfb107af8d2e4bd2fb9aea22cf5b868 config: loongarch-buildonly-randconfig-r003-20220815 (https://download.01.org/0day-ci/archive/20220816/202208160237.kJBIqapz-lkp@xxxxxxxxx/config) compiler: loongarch64-linux-gcc (GCC) 12.1.0 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/intel-lab-lkp/linux/commit/0cdab71896d6b3b3b3f540f80d6f041a0c592e7a git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Huacai-Chen/LoongArch-Use-TLB-for-ioremap/20220815-204842 git checkout 0cdab71896d6b3b3b3f540f80d6f041a0c592e7a # save the config file COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 ARCH=loongarch If you fix the issue, kindly add following tag where applicable Reported-by: kernel test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): arch/loongarch/mm/init.c:47:6: warning: no previous prototype for 'setup_zero_pages' [-Wmissing-prototypes] 47 | void setup_zero_pages(void) | ^~~~~~~~~~~~~~~~ arch/loongarch/mm/init.c: In function 'fixmap_pte': >> arch/loongarch/mm/init.c:171:24: warning: variable 'new' set but not used [-Wunused-but-set-variable] 171 | pud_t *new; | ^~~ arch/loongarch/mm/init.c:182:24: warning: variable 'new' set but not used [-Wunused-but-set-variable] 182 | pmd_t *new; | ^~~ -- >> arch/loongarch/pci/acpi.c:91:27: warning: no previous prototype for 'arch_pci_ecam_create' [-Wmissing-prototypes] 91 | struct pci_config_window *arch_pci_ecam_create(struct device *dev, | ^~~~~~~~~~~~~~~~~~~~ arch/loongarch/pci/acpi.c: In function 'pci_acpi_setup_ecam_mapping': arch/loongarch/pci/acpi.c:166:29: error: 'loongson_pci_ecam_ops' undeclared (first use in this function) 166 | ecam_ops = &loongson_pci_ecam_ops; | ^~~~~~~~~~~~~~~~~~~~~ arch/loongarch/pci/acpi.c:166:29: note: each undeclared identifier is reported only once for each function it appears in Kconfig warnings: (for reference only) WARNING: unmet direct dependencies detected for PCI_LOONGSON Depends on [n]: PCI [=y] && (MACH_LOONGSON64 [=y] || COMPILE_TEST [=y]) && (OF [=y] || ACPI [=y]) && PCI_QUIRKS [=n] Selected by [y]: - LOONGARCH [=y] vim +/new +171 arch/loongarch/mm/init.c 159 160 static pte_t *fixmap_pte(unsigned long addr) 161 { 162 pgd_t *pgd; 163 p4d_t *p4d; 164 pud_t *pud; 165 pmd_t *pmd; 166 167 pgd = pgd_offset_k(addr); 168 p4d = p4d_offset(pgd, addr); 169 170 if (pgd_none(*pgd)) { > 171 pud_t *new; 172 173 new = memblock_alloc_low(PAGE_SIZE, PAGE_SIZE); 174 pgd_populate(&init_mm, pgd, new); 175 #ifndef __PAGETABLE_PUD_FOLDED 176 pud_init(new); 177 #endif 178 } 179 180 pud = pud_offset(p4d, addr); 181 if (pud_none(*pud)) { 182 pmd_t *new; 183 184 new = memblock_alloc_low(PAGE_SIZE, PAGE_SIZE); 185 pud_populate(&init_mm, pud, new); 186 #ifndef __PAGETABLE_PMD_FOLDED 187 pmd_init(new); 188 #endif 189 } 190 191 pmd = pmd_offset(pud, addr); 192 if (pmd_none(*pmd)) { 193 pte_t *new; 194 195 new = memblock_alloc_low(PAGE_SIZE, PAGE_SIZE); 196 pmd_populate_kernel(&init_mm, pmd, new); 197 } 198 199 return pte_offset_kernel(pmd, addr); 200 } 201 -- 0-DAY CI Kernel Test Service https://01.org/lkp
