Hi Ziyao, kernel test robot noticed the following build errors: [auto build test ERROR on 3957a5720157264dcc41415fbec7c51c4000fc2d] url: https://github.com/intel-lab-lkp/linux/commits/Ziyao-via-B4-Relay/PCI-Override-PCIe-bridge-supported-speeds-for-older-Loongson-3C6000-series-steppings/20250822-171721 base: 3957a5720157264dcc41415fbec7c51c4000fc2d patch link: https://lore.kernel.org/r/20250822-loongson-pci1-v1-1-39aabbd11fbd%40uniontech.com patch subject: [PATCH RESEND] PCI: Override PCIe bridge supported speeds for older Loongson 3C6000 series steppings config: alpha-allnoconfig (https://download.01.org/0day-ci/archive/20250823/202508230402.VUq5Fewo-lkp@xxxxxxxxx/config) compiler: alpha-linux-gcc (GCC) 15.1.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250823/202508230402.VUq5Fewo-lkp@xxxxxxxxx/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202508230402.VUq5Fewo-lkp@xxxxxxxxx/ All error/warnings (new ones prefixed by >>): In file included from drivers/pci/quirks.c:21: >> drivers/pci/quirks.c:1980:58: error: 'quirk_loongson_secondary_bridge_supported_speeds' undeclared here (not in a function); did you mean 'quirk_loongson_pci_bridge_supported_speeds'? 1980 | DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_LOONGSON, 0x3c19, quirk_loongson_secondary_bridge_supported_speeds); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/pci.h:2318:57: note: in definition of macro 'DECLARE_PCI_FIXUP_SECTION' 2318 | = { vendor, device, class, class_shift, hook }; | ^~~~ drivers/pci/quirks.c:1980:1: note: in expansion of macro 'DECLARE_PCI_FIXUP_HEADER' 1980 | DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_LOONGSON, 0x3c19, quirk_loongson_secondary_bridge_supported_speeds); | ^~~~~~~~~~~~~~~~~~~~~~~~ >> drivers/pci/quirks.c:1965:13: warning: 'quirk_loongson_pci_bridge_supported_speeds' defined but not used [-Wunused-function] 1965 | static void quirk_loongson_pci_bridge_supported_speeds(struct pci_dev *pdev) | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ vim +1980 drivers/pci/quirks.c 1958 1959 /* 1960 * Older steppings of the Loongson 3C6000 series incorrectly report the 1961 * supported link speeds on their PCIe bridges (device IDs 3c19, 3c29) as 1962 * only 2.5 GT/s, despite the upstream bus supporting speeds from 2.5 GT/s 1963 * up to 16 GT/s. 1964 */ > 1965 static void quirk_loongson_pci_bridge_supported_speeds(struct pci_dev *pdev) 1966 { 1967 switch (pdev->bus->max_bus_speed) { 1968 case PCIE_SPEED_16_0GT: 1969 pdev->supported_speeds |= PCI_EXP_LNKCAP2_SLS_16_0GB; 1970 case PCIE_SPEED_8_0GT: 1971 pdev->supported_speeds |= PCI_EXP_LNKCAP2_SLS_8_0GB; 1972 case PCIE_SPEED_5_0GT: 1973 pdev->supported_speeds |= PCI_EXP_LNKCAP2_SLS_5_0GB; 1974 case PCIE_SPEED_2_5GT: 1975 pdev->supported_speeds |= PCI_EXP_LNKCAP2_SLS_2_5GB; 1976 default: 1977 break; 1978 } 1979 } > 1980 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_LOONGSON, 0x3c19, quirk_loongson_secondary_bridge_supported_speeds); 1981 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_LOONGSON, 0x3c29, quirk_loongson_secondary_bridge_supported_speeds); 1982 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
