tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 7dd4b804e08041ff56c88bdd8da742d14b17ed25 commit: ded2ee36313c941f1a12b6f85cde295b575264ae openrisc: Add pci bus support date: 6 months ago config: openrisc-randconfig-m041-20230111 compiler: or1k-linux-gcc (GCC) 12.1.0 If you fix the issue, kindly add following tag where applicable | Reported-by: kernel test robot smatch warnings: drivers/pci/pci.c:4195 pci_pio_to_address() warn: always true condition '(pio >= (0 - 0)) => (0-u32max >= 0)' vim +4195 drivers/pci/pci.c c5076cfe768998 Tomasz Nowicki 2016-05-11 4189 c5076cfe768998 Tomasz Nowicki 2016-05-11 4190 phys_addr_t pci_pio_to_address(unsigned long pio) c5076cfe768998 Tomasz Nowicki 2016-05-11 4191 { c5076cfe768998 Tomasz Nowicki 2016-05-11 4192 phys_addr_t address = (phys_addr_t)OF_BAD_ADDR; c5076cfe768998 Tomasz Nowicki 2016-05-11 4193 c5076cfe768998 Tomasz Nowicki 2016-05-11 4194 #ifdef PCI_IOBASE 5745392e0c2b78 Zhichang Yuan 2018-03-15 @4195 if (pio >= MMIO_UPPER_LIMIT) c5076cfe768998 Tomasz Nowicki 2016-05-11 4196 return address; c5076cfe768998 Tomasz Nowicki 2016-05-11 4197 5745392e0c2b78 Zhichang Yuan 2018-03-15 4198 address = logic_pio_to_hwaddr(pio); c5076cfe768998 Tomasz Nowicki 2016-05-11 4199 #endif c5076cfe768998 Tomasz Nowicki 2016-05-11 4200 c5076cfe768998 Tomasz Nowicki 2016-05-11 4201 return address; c5076cfe768998 Tomasz Nowicki 2016-05-11 4202 } 9cc742078c9a90 Jianjun Wang 2021-04-20 4203 EXPORT_SYMBOL_GPL(pci_pio_to_address); c5076cfe768998 Tomasz Nowicki 2016-05-11 4204 :::::: The code at line 4195 was first introduced by commit :::::: 5745392e0c2b78e0d73203281d5c42cbd6993194 PCI: Apply the new generic I/O management on PCI IO hosts :::::: TO: Zhichang Yuan :::::: CC: Bjorn Helgaas -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests