tree: https://github.com/Freescale/linux-fslc pr/317 head: cffe4fb95c43405f2fe3ceab81948a12c8769724 commit: a32bd4692437b1a2fc977fc8b1302e6107b2f0d6 [13/48] MLK-25283-4 PCI: imx: adjust the l1ss support to proper place config: i386-randconfig-a015-20210611 (attached as .config) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce (this is a W=1 build): # https://github.com/Freescale/linux-fslc/commit/a32bd4692437b1a2fc977fc8b1... git remote add freescale-fslc https://github.com/Freescale/linux-fslc git fetch --no-tags freescale-fslc pr/317 git checkout a32bd4692437b1a2fc977fc8b1302e6107b2f0d6 # save the attached .config to linux build tree make W=1 ARCH=i386 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): ld: drivers/pci/controller/dwc/pci-imx6.o: in function `imx6_pcie_start_link': drivers/pci/controller/dwc/pci-imx6.c:1965: undefined reference to `dw_pcie_link_up' ld: drivers/pci/controller/dwc/pci-imx6.o: in function `dw_pcie_readl_dbi': drivers/pci/controller/dwc/pcie-designware.h:294: undefined reference to `dw_pcie_read_dbi' ld: drivers/pci/controller/dwc/pci-imx6.o: in function `dw_pcie_writel_dbi': drivers/pci/controller/dwc/pcie-designware.h:289: undefined reference to `dw_pcie_write_dbi' ld: drivers/pci/controller/dwc/pcie-designware.h:289: undefined reference to `dw_pcie_write_dbi' ld: drivers/pci/controller/dwc/pcie-designware.h:289: undefined reference to `dw_pcie_write_dbi' ld: drivers/pci/controller/dwc/pcie-designware.h:289: undefined reference to `dw_pcie_write_dbi' ld: drivers/pci/controller/dwc/pci-imx6.o: in function `dw_pcie_readl_dbi': drivers/pci/controller/dwc/pcie-designware.h:294: undefined reference to `dw_pcie_read_dbi' ld: drivers/pci/controller/dwc/pci-imx6.o: in function `dw_pcie_writel_dbi': drivers/pci/controller/dwc/pcie-designware.h:289: undefined reference to `dw_pcie_write_dbi' ld: drivers/pci/controller/dwc/pcie-designware.h:289: undefined reference to `dw_pcie_write_dbi' ld: drivers/pci/controller/dwc/pcie-designware.h:289: undefined reference to `dw_pcie_write_dbi' ld: drivers/pci/controller/dwc/pcie-designware.h:289: undefined reference to `dw_pcie_write_dbi' ld: drivers/pci/controller/dwc/pcie-designware.h:289: undefined reference to `dw_pcie_write_dbi' ld: drivers/pci/controller/dwc/pci-imx6.o:drivers/pci/controller/dwc/pcie-designware.h:289: more undefined references to `dw_pcie_write_dbi' follow ld: drivers/pci/controller/dwc/pci-imx6.o: in function `imx6_pcie_l1ss_quirk': ld: drivers/pci/controller/dwc/pci-imx6.o: in function `dw_pcie_readl_dbi': drivers/pci/controller/dwc/pcie-designware.h:294: undefined reference to `dw_pcie_read_dbi' ld: drivers/pci/controller/dwc/pci-imx6.o: in function `imx6_pcie_l1ss_quirk': ld: drivers/pci/controller/dwc/pci-imx6.c:2958: undefined reference to `dw_pcie_read' ld: drivers/pci/controller/dwc/pci-imx6.o: in function `dw_pcie_readl_dbi': drivers/pci/controller/dwc/pcie-designware.h:294: undefined reference to `dw_pcie_read_dbi' ld: drivers/pci/controller/dwc/pci-imx6.o: in function `dw_pcie_writel_dbi': drivers/pci/controller/dwc/pcie-designware.h:289: undefined reference to `dw_pcie_write_dbi' ld: drivers/pci/controller/dwc/pci-imx6.o: in function `dw_pcie_readl_dbi': drivers/pci/controller/dwc/pcie-designware.h:294: undefined reference to `dw_pcie_read_dbi' ld: drivers/pci/controller/dwc/pci-imx6.o: in function `dw_pcie_writel_dbi': drivers/pci/controller/dwc/pcie-designware.h:289: undefined reference to `dw_pcie_write_dbi' ld: drivers/pci/controller/dwc/pci-imx6.o: in function `dw_pcie_readl_dbi': drivers/pci/controller/dwc/pcie-designware.h:294: undefined reference to `dw_pcie_read_dbi' ld: drivers/pci/controller/dwc/pci-imx6.o: in function `dw_pcie_writel_dbi': drivers/pci/controller/dwc/pcie-designware.h:289: undefined reference to `dw_pcie_write_dbi' ld: drivers/pci/controller/dwc/pci-imx6.o: in function `dw_pcie_readw_dbi': drivers/pci/controller/dwc/pcie-designware.h:304: undefined reference to `dw_pcie_read_dbi' ld: drivers/pci/controller/dwc/pci-imx6.o: in function `dw_pcie_writew_dbi': drivers/pci/controller/dwc/pcie-designware.h:299: undefined reference to `dw_pcie_write_dbi' ld: drivers/pci/controller/dwc/pci-imx6.o: in function `dw_pcie_readl_dbi': drivers/pci/controller/dwc/pcie-designware.h:294: undefined reference to `dw_pcie_read_dbi' ld: drivers/pci/controller/dwc/pci-imx6.o: in function `dw_pcie_writel_dbi': drivers/pci/controller/dwc/pcie-designware.h:289: undefined reference to `dw_pcie_write_dbi' ld: drivers/pci/controller/dwc/pci-imx6.o: in function `dw_pcie_readl_dbi': drivers/pci/controller/dwc/pcie-designware.h:294: undefined reference to `dw_pcie_read_dbi' ld: drivers/pci/controller/dwc/pci-imx6.o: in function `dw_pcie_writel_dbi': drivers/pci/controller/dwc/pcie-designware.h:289: undefined reference to `dw_pcie_write_dbi' ld: drivers/pci/controller/dwc/pci-imx6.o: in function `dw_pcie_readl_dbi': drivers/pci/controller/dwc/pcie-designware.h:294: undefined reference to `dw_pcie_read_dbi' ld: drivers/pci/controller/dwc/pci-imx6.o: in function `dw_pcie_writel_dbi': drivers/pci/controller/dwc/pcie-designware.h:289: undefined reference to `dw_pcie_write_dbi' ld: drivers/pci/controller/dwc/pci-imx6.o: in function `imx6_pcie_establish_link': drivers/pci/controller/dwc/pci-imx6.c:1818: undefined reference to `dw_pcie_wait_for_link' ld: drivers/pci/controller/dwc/pci-imx6.o: in function `dw_pcie_readl_dbi': drivers/pci/controller/dwc/pcie-designware.h:294: undefined reference to `dw_pcie_read_dbi' ld: drivers/pci/controller/dwc/pci-imx6.o: in function `dw_pcie_writel_dbi': drivers/pci/controller/dwc/pcie-designware.h:289: undefined reference to `dw_pcie_write_dbi' ld: drivers/pci/controller/dwc/pci-imx6.o: in function `dw_pcie_readl_dbi': drivers/pci/controller/dwc/pcie-designware.h:294: undefined reference to `dw_pcie_read_dbi' ld: drivers/pci/controller/dwc/pci-imx6.o: in function `dw_pcie_writel_dbi': drivers/pci/controller/dwc/pcie-designware.h:289: undefined reference to `dw_pcie_write_dbi' ld: drivers/pci/controller/dwc/pci-imx6.o: in function `dw_pcie_readl_dbi': drivers/pci/controller/dwc/pcie-designware.h:294: undefined reference to `dw_pcie_read_dbi' ld: drivers/pci/controller/dwc/pci-imx6.o: in function `dw_pcie_writel_dbi': drivers/pci/controller/dwc/pcie-designware.h:289: undefined reference to `dw_pcie_write_dbi' ld: drivers/pci/controller/dwc/pci-imx6.o: in function `dw_pcie_readl_dbi': drivers/pci/controller/dwc/pcie-designware.h:294: undefined reference to `dw_pcie_read_dbi' ld: drivers/pci/controller/dwc/pci-imx6.o: in function `dw_pcie_writel_dbi': drivers/pci/controller/dwc/pcie-designware.h:289: undefined reference to `dw_pcie_write_dbi' ld: drivers/pci/controller/dwc/pci-imx6.o: in function `dw_pcie_readl_dbi': drivers/pci/controller/dwc/pcie-designware.h:294: undefined reference to `dw_pcie_read_dbi' ld: drivers/pci/controller/dwc/pci-imx6.o: in function `imx6_pcie_establish_link': drivers/pci/controller/dwc/pci-imx6.c:1866: undefined reference to `dw_pcie_wait_for_link' ld: drivers/pci/controller/dwc/pci-imx6.o: in function `dw_pcie_readl_dbi': drivers/pci/controller/dwc/pcie-designware.h:294: undefined reference to `dw_pcie_read_dbi' ld: drivers/pci/controller/dwc/pci-imx6.o: in function `dw_pcie_writel_dbi': drivers/pci/controller/dwc/pcie-designware.h:289: undefined reference to `dw_pcie_write_dbi' ld: drivers/pci/controller/dwc/pci-imx6.o: in function `dw_pcie_readl_dbi': drivers/pci/controller/dwc/pcie-designware.h:294: undefined reference to `dw_pcie_read_dbi' ld: drivers/pci/controller/dwc/pcie-designware.h:294: undefined reference to `dw_pcie_read_dbi' ld: drivers/pci/controller/dwc/pci-imx6.o: in function `dw_pcie_writel_dbi': drivers/pci/controller/dwc/pcie-designware.h:289: undefined reference to `dw_pcie_write_dbi' ld: drivers/pci/controller/dwc/pci-imx6.o: in function `dw_pcie_readl_dbi': drivers/pci/controller/dwc/pcie-designware.h:294: undefined reference to `dw_pcie_read_dbi' ld: drivers/pci/controller/dwc/pci-imx6.o: in function `dw_pcie_writel_dbi': drivers/pci/controller/dwc/pcie-designware.h:289: undefined reference to `dw_pcie_write_dbi' ld: drivers/gpu/drm/bridge/nwl-dsi/nwl-drv.o: in function `nwl_dsi_get_lcm': drivers/gpu/drm/bridge/nwl-dsi/nwl-drv.c:144: undefined reference to `__udivdi3' ld: drivers/gpu/drm/bridge/nwl-dsi/nwl-dsi.o: in function `ui2bc': drivers/gpu/drm/bridge/nwl-dsi/nwl-dsi.c:152: undefined reference to `__udivdi3' ld: drivers/gpu/drm/bridge/nwl-dsi/nwl-dsi.o: in function `ps2bc': drivers/gpu/drm/bridge/nwl-dsi/nwl-dsi.c:141: undefined reference to `__udivdi3' ld: drivers/gpu/drm/bridge/nwl-dsi/nwl-dsi.o: in function `ui2bc': drivers/gpu/drm/bridge/nwl-dsi/nwl-dsi.c:152: undefined reference to `__udivdi3' ld: drivers/gpu/drm/bridge/nwl-dsi/nwl-dsi.o: in function `ps2bc': drivers/gpu/drm/bridge/nwl-dsi/nwl-dsi.c:141: undefined reference to `__udivdi3' vim +2935 drivers/pci/controller/dwc/pci-imx6.c 2889 2890 static void imx6_pcie_quirk(struct pci_dev *dev) 2891 { 2892 struct pci_bus *bus = dev->bus; 2893 struct pcie_port *pp = bus->sysdata; 2894 2895 /* Bus parent is the PCI bridge, its parent is this platform driver */ 2896 if (!bus->dev.parent || !bus->dev.parent->parent) 2897 return; 2898 2899 /* Make sure we only quirk devices associated with this driver */ 2900 if (bus->dev.parent->parent->driver != &imx6_pcie_driver.driver) 2901 return; 2902 2903 if (bus->number == pp->root_bus_nr) { 2904 struct dw_pcie *pci = to_dw_pcie_from_pp(pp); 2905 struct imx6_pcie *imx6_pcie = to_imx6_pcie(pci); 2906 2907 /* 2908 * Limit config length to avoid the kernel reading beyond 2909 * the register set and causing an abort on i.MX 6Quad 2910 */ 2911 if (imx6_pcie->drvdata->dbi_length) { 2912 dev->cfg_size = imx6_pcie->drvdata->dbi_length; 2913 dev_info(&dev->dev, "Limiting cfg_size to %d\n", 2914 dev->cfg_size); 2915 } 2916 } 2917 } 2918 DECLARE_PCI_FIXUP_CLASS_HEADER(PCI_VENDOR_ID_SYNOPSYS, 0xabcd, 2919 PCI_CLASS_BRIDGE_PCI, 8, imx6_pcie_quirk); 2920 2921 static void imx6_pcie_l1ss_quirk(struct pci_dev *dev) 2922 { 2923 u32 reg, rc_l1sub, ep_l1sub, header; 2924 int ttl, ret; 2925 int pos = PCI_CFG_SPACE_SIZE; 2926 struct pci_bus *bus = dev->bus; 2927 struct pcie_port *pp = bus->sysdata; 2928 struct dw_pcie *pci = to_dw_pcie_from_pp(pp); 2929 struct imx6_pcie *imx6_pcie = to_imx6_pcie(pci); 2930 2931 /* Return directly, if the L1SS is not supported by RC */ 2932 if (!(imx6_pcie->drvdata->flags & IMX6_PCIE_FLAG_SUPPORTS_L1SS)) 2933 return; 2934 2936 rc_l1sub = dw_pcie_readl_dbi(pci, reg + PCI_L1SS_CAP); 2937 2938 /* minimum 8 bytes per capability */ 2939 ttl = (PCI_CFG_SPACE_EXP_SIZE - PCI_CFG_SPACE_SIZE) / 8; 2941 /* 2942 * If we have no capabilities, this is indicated by cap ID, 2943 * cap version and next pointer all being 0. 2944 */ 2945 if (header == 0) 2946 return; 2947 2948 while (ttl-- > 0) { 2949 if (PCI_EXT_CAP_ID(header) == PCI_EXT_CAP_ID_L1SS && pos != 0) 2950 break; 2951 2952 pos = PCI_EXT_CAP_NEXT(header); 2953 if (pos < PCI_CFG_SPACE_SIZE) 2954 break; 2955 2957 } 2958 ret = dw_pcie_read(pp->va_cfg0_base + pos + PCI_L1SS_CAP, 4, &ep_l1sub); 2959 2960 if ((rc_l1sub && ep_l1sub) && PCI_L1SS_CAP_L1_PM_SS) { 2961 imx6_pcie->l1ss_clkreq = 1; 2962 imx6_pcie_clkreq_enable(imx6_pcie); 2963 } else { 2964 imx6_pcie->l1ss_clkreq = 0; 2965 } 2966 } 2967 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SYNOPSYS, 0xabcd, imx6_pcie_l1ss_quirk); 2968 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org