Hi Jindong, FYI, the error/warning still remains. tree: https://github.com/Freescale/linux-fslc pr/416 head: 915e71b823c877d351de1cbe650344ef6eace94b commit: 61b7aecf354c8e55cffc466be937c184b8aaadb0 [14383/20667] MA-17597-5 pci: controller: dwc: support module build config: x86_64-randconfig-a006-20210816 (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/61b7aecf354c8e55cffc466be9... git remote add freescale-fslc https://github.com/Freescale/linux-fslc git fetch --no-tags freescale-fslc pr/416 git checkout 61b7aecf354c8e55cffc466be937c184b8aaadb0 # save the attached .config to linux build tree mkdir build_dir make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash 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': ld: drivers/pci/controller/dwc/pci-imx6.o: in function `dw_pcie_readl_dbi': ld: drivers/pci/controller/dwc/pci-imx6.o: in function `dw_pcie_writel_dbi': ld: drivers/pci/controller/dwc/pci-imx6.o: in function `dw_pcie_readl_dbi': ld: drivers/pci/controller/dwc/pci-imx6.o: in function `dw_pcie_writel_dbi': >> ld: drivers/pci/controller/dwc/pcie-designware.h:288: undefined reference to `dw_pcie_write_dbi' ld: drivers/pci/controller/dwc/pci-imx6.o:drivers/pci/controller/dwc/pcie-designware.h:288: more undefined references to `dw_pcie_write_dbi' follow ld: drivers/pci/controller/dwc/pci-imx6.o: in function `dw_pcie_readl_dbi': ld: drivers/pci/controller/dwc/pci-imx6.o: in function `dw_pcie_writel_dbi': ld: drivers/pci/controller/dwc/pci-imx6.o: in function `imx6_pcie_establish_link': ld: drivers/pci/controller/dwc/pci-imx6.o: in function `dw_pcie_readl_dbi': ld: drivers/pci/controller/dwc/pci-imx6.o: in function `dw_pcie_writel_dbi': ld: drivers/pci/controller/dwc/pci-imx6.o: in function `dw_pcie_readl_dbi': ld: drivers/pci/controller/dwc/pci-imx6.o: in function `dw_pcie_writel_dbi': ld: drivers/pci/controller/dwc/pci-imx6.o: in function `dw_pcie_readl_dbi': ld: drivers/pci/controller/dwc/pci-imx6.o: in function `dw_pcie_writel_dbi': drivers/pci/controller/dwc/pcie-designware.h:288: 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:293: 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:288: 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:293: 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:1864: 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:293: undefined reference to `dw_pcie_read_dbi' ld: drivers/pci/controller/dwc/pcie-designware.h:293: 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:288: 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:293: undefined reference to `dw_pcie_read_dbi' ld: drivers/pci/controller/dwc/pcie-designware.h:293: 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:288: 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:303: 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:298: 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:293: 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:288: undefined reference to `dw_pcie_write_dbi' ld: drivers/pci/controller/dwc/pcie-designware.h:288: undefined reference to `dw_pcie_write_dbi' vim +1961 drivers/pci/controller/dwc/pci-imx6.c 0ee2c1f2429f74 drivers/pci/controller/dwc/pci-imx6.c Leonard Crestez 2018-08-27 1794 e7d7705ace9494 drivers/pci/host/pci-imx6.c Bjorn Helgaas 2016-10-11 1795 static int imx6_pcie_establish_link(struct imx6_pcie *imx6_pcie) bb38919ec56e07 drivers/pci/host/pci-imx6.c Sean Cross 2013-09-26 1796 { 442ec4c04d1235 drivers/pci/dwc/pci-imx6.c Kishon Vijay Abraham I 2017-02-15 1797 struct dw_pcie *pci = imx6_pcie->pci; 442ec4c04d1235 drivers/pci/dwc/pci-imx6.c Kishon Vijay Abraham I 2017-02-15 1798 struct device *dev = pci->dev; 1c7fae18a1fb6b drivers/pci/host/pci-imx6.c Bjorn Helgaas 2015-06-12 1799 u32 tmp; a0427464cf4c4a drivers/pci/host/pci-imx6.c Troy Kisky 2015-06-12 1800 int ret; fa33a6d87eac1a drivers/pci/host/pci-imx6.c Marek Vasut 2013-12-12 1801 fa33a6d87eac1a drivers/pci/host/pci-imx6.c Marek Vasut 2013-12-12 1802 /* fa33a6d87eac1a drivers/pci/host/pci-imx6.c Marek Vasut 2013-12-12 1803 * Force Gen1 operation when starting the link. In case the link is fa33a6d87eac1a drivers/pci/host/pci-imx6.c Marek Vasut 2013-12-12 1804 * started in Gen2 mode, there is a possibility the devices on the fa33a6d87eac1a drivers/pci/host/pci-imx6.c Marek Vasut 2013-12-12 1805 * bus will not be detected at all. This happens with PCIe switches. fa33a6d87eac1a drivers/pci/host/pci-imx6.c Marek Vasut 2013-12-12 1806 */ af235be4424b00 drivers/pci/controller/dwc/pci-imx6.c Richard Zhu 2020-05-08 1807 if (!IS_ENABLED(CONFIG_PCI_IMX6_COMPLIANCE_TEST)) { 442ec4c04d1235 drivers/pci/dwc/pci-imx6.c Kishon Vijay Abraham I 2017-02-15 1808 tmp = dw_pcie_readl_dbi(pci, PCIE_RC_LCR); fa33a6d87eac1a drivers/pci/host/pci-imx6.c Marek Vasut 2013-12-12 1809 tmp &= ~PCIE_RC_LCR_MAX_LINK_SPEEDS_MASK; fa33a6d87eac1a drivers/pci/host/pci-imx6.c Marek Vasut 2013-12-12 1810 tmp |= PCIE_RC_LCR_MAX_LINK_SPEEDS_GEN1; 442ec4c04d1235 drivers/pci/dwc/pci-imx6.c Kishon Vijay Abraham I 2017-02-15 1811 dw_pcie_writel_dbi(pci, PCIE_RC_LCR, tmp); af235be4424b00 drivers/pci/controller/dwc/pci-imx6.c Richard Zhu 2020-05-08 1812 } fa33a6d87eac1a drivers/pci/host/pci-imx6.c Marek Vasut 2013-12-12 1813 fa33a6d87eac1a drivers/pci/host/pci-imx6.c Marek Vasut 2013-12-12 1814 /* Start LTSSM. */ 0ee2c1f2429f74 drivers/pci/controller/dwc/pci-imx6.c Leonard Crestez 2018-08-27 1815 imx6_pcie_ltssm_enable(dev); ee6f37175b3f7a drivers/pci/controller/dwc/pci-imx6.c Andrey Smirnov 2019-04-14 @1816 ret = dw_pcie_wait_for_link(pci); caf3f562e1161a drivers/pci/host/pci-imx6.c Fabio Estevam 2016-12-27 1817 if (ret) 54a47a83421a3b drivers/pci/host/pci-imx6.c Lucas Stach 2016-01-25 1818 goto err_reset_phy; fa33a6d87eac1a drivers/pci/host/pci-imx6.c Marek Vasut 2013-12-12 1819 e76f906f9773bc drivers/pci/controller/dwc/pci-imx6.c Richard Zhu 2019-01-25 1820 if (imx6_pcie->link_gen >= 2) { 12589ba98b1145 drivers/pci/controller/dwc/pci-imx6.c Richard Zhu 2020-06-22 1821 /* Fill up target link speed before speed change. */ 12589ba98b1145 drivers/pci/controller/dwc/pci-imx6.c Richard Zhu 2020-06-22 1822 tmp = dw_pcie_readl_dbi(pci, PCIE_RC_LC2SR); 12589ba98b1145 drivers/pci/controller/dwc/pci-imx6.c Richard Zhu 2020-06-22 1823 tmp &= ~PCIE_RC_LCR_MAX_LINK_SPEEDS_MASK; 12589ba98b1145 drivers/pci/controller/dwc/pci-imx6.c Richard Zhu 2020-06-22 1824 tmp |= imx6_pcie->link_gen; 12589ba98b1145 drivers/pci/controller/dwc/pci-imx6.c Richard Zhu 2020-06-22 1825 dw_pcie_writel_dbi(pci, PCIE_RC_LC2SR, tmp); 12589ba98b1145 drivers/pci/controller/dwc/pci-imx6.c Richard Zhu 2020-06-22 1826 12589ba98b1145 drivers/pci/controller/dwc/pci-imx6.c Richard Zhu 2020-06-22 1827 tmp = dw_pcie_readl_dbi(pci, PCIE_LINK_WIDTH_SPEED_CONTROL); 12589ba98b1145 drivers/pci/controller/dwc/pci-imx6.c Richard Zhu 2020-06-22 1828 tmp &= ~PORT_LOGIC_SPEED_CHANGE; 12589ba98b1145 drivers/pci/controller/dwc/pci-imx6.c Richard Zhu 2020-06-22 1829 dw_pcie_writel_dbi(pci, PCIE_LINK_WIDTH_SPEED_CONTROL, tmp); 12589ba98b1145 drivers/pci/controller/dwc/pci-imx6.c Richard Zhu 2020-06-22 1830 fa33a6d87eac1a drivers/pci/host/pci-imx6.c Marek Vasut 2013-12-12 1831 /* Allow Gen2 mode after the link is up. */ 442ec4c04d1235 drivers/pci/dwc/pci-imx6.c Kishon Vijay Abraham I 2017-02-15 1832 tmp = dw_pcie_readl_dbi(pci, PCIE_RC_LCR); fa33a6d87eac1a drivers/pci/host/pci-imx6.c Marek Vasut 2013-12-12 1833 tmp &= ~PCIE_RC_LCR_MAX_LINK_SPEEDS_MASK; e76f906f9773bc drivers/pci/controller/dwc/pci-imx6.c Richard Zhu 2019-01-25 1834 tmp |= imx6_pcie->link_gen; 442ec4c04d1235 drivers/pci/dwc/pci-imx6.c Kishon Vijay Abraham I 2017-02-15 1835 dw_pcie_writel_dbi(pci, PCIE_RC_LCR, tmp); fa33a6d87eac1a drivers/pci/host/pci-imx6.c Marek Vasut 2013-12-12 1836 fa33a6d87eac1a drivers/pci/host/pci-imx6.c Marek Vasut 2013-12-12 1837 /* 93b226f9c65a95 drivers/pci/dwc/pci-imx6.c Andrey Smirnov 2017-03-28 1838 * Start Directed Speed Change so the best possible 93b226f9c65a95 drivers/pci/dwc/pci-imx6.c Andrey Smirnov 2017-03-28 1839 * speed both link partners support can be negotiated. fa33a6d87eac1a drivers/pci/host/pci-imx6.c Marek Vasut 2013-12-12 1840 */ 442ec4c04d1235 drivers/pci/dwc/pci-imx6.c Kishon Vijay Abraham I 2017-02-15 1841 tmp = dw_pcie_readl_dbi(pci, PCIE_LINK_WIDTH_SPEED_CONTROL); fa33a6d87eac1a drivers/pci/host/pci-imx6.c Marek Vasut 2013-12-12 1842 tmp |= PORT_LOGIC_SPEED_CHANGE; 442ec4c04d1235 drivers/pci/dwc/pci-imx6.c Kishon Vijay Abraham I 2017-02-15 1843 dw_pcie_writel_dbi(pci, PCIE_LINK_WIDTH_SPEED_CONTROL, tmp); fa33a6d87eac1a drivers/pci/host/pci-imx6.c Marek Vasut 2013-12-12 1844 4c458bb347ae01 drivers/pci/controller/dwc/pci-imx6.c Andrey Smirnov 2019-02-01 1845 if (imx6_pcie->drvdata->flags & 4c458bb347ae01 drivers/pci/controller/dwc/pci-imx6.c Andrey Smirnov 2019-02-01 1846 IMX6_PCIE_FLAG_IMX6_SPEED_CHANGE) { e6dcd87fff69a9 drivers/pci/dwc/pci-imx6.c Andrey Smirnov 2017-03-28 1847 /* e6dcd87fff69a9 drivers/pci/dwc/pci-imx6.c Andrey Smirnov 2017-03-28 1848 * On i.MX7, DIRECT_SPEED_CHANGE behaves differently e6dcd87fff69a9 drivers/pci/dwc/pci-imx6.c Andrey Smirnov 2017-03-28 1849 * from i.MX6 family when no link speed transition e6dcd87fff69a9 drivers/pci/dwc/pci-imx6.c Andrey Smirnov 2017-03-28 1850 * occurs and we go Gen1 -> yep, Gen1. The difference e6dcd87fff69a9 drivers/pci/dwc/pci-imx6.c Andrey Smirnov 2017-03-28 1851 * is that, in such case, it will not be cleared by HW e6dcd87fff69a9 drivers/pci/dwc/pci-imx6.c Andrey Smirnov 2017-03-28 1852 * which will cause the following code to report false e6dcd87fff69a9 drivers/pci/dwc/pci-imx6.c Andrey Smirnov 2017-03-28 1853 * failure. e6dcd87fff69a9 drivers/pci/dwc/pci-imx6.c Andrey Smirnov 2017-03-28 1854 */ e6dcd87fff69a9 drivers/pci/dwc/pci-imx6.c Andrey Smirnov 2017-03-28 1855 e7d7705ace9494 drivers/pci/host/pci-imx6.c Bjorn Helgaas 2016-10-11 1856 ret = imx6_pcie_wait_for_speed_change(imx6_pcie); a0427464cf4c4a drivers/pci/host/pci-imx6.c Troy Kisky 2015-06-12 1857 if (ret) { 13957652f7242a drivers/pci/host/pci-imx6.c Bjorn Helgaas 2016-10-06 1858 dev_err(dev, "Failed to bring link up!\n"); 54a47a83421a3b drivers/pci/host/pci-imx6.c Lucas Stach 2016-01-25 1859 goto err_reset_phy; fa33a6d87eac1a drivers/pci/host/pci-imx6.c Marek Vasut 2013-12-12 1860 } e6dcd87fff69a9 drivers/pci/dwc/pci-imx6.c Andrey Smirnov 2017-03-28 1861 } fa33a6d87eac1a drivers/pci/host/pci-imx6.c Marek Vasut 2013-12-12 1862 fa33a6d87eac1a drivers/pci/host/pci-imx6.c Marek Vasut 2013-12-12 1863 /* Make sure link training is finished as well! */ ee6f37175b3f7a drivers/pci/controller/dwc/pci-imx6.c Andrey Smirnov 2019-04-14 1864 ret = dw_pcie_wait_for_link(pci); fa33a6d87eac1a drivers/pci/host/pci-imx6.c Marek Vasut 2013-12-12 1865 if (ret) { 13957652f7242a drivers/pci/host/pci-imx6.c Bjorn Helgaas 2016-10-06 1866 dev_err(dev, "Failed to bring link up!\n"); 54a47a83421a3b drivers/pci/host/pci-imx6.c Lucas Stach 2016-01-25 1867 goto err_reset_phy; fa33a6d87eac1a drivers/pci/host/pci-imx6.c Marek Vasut 2013-12-12 1868 } 93b226f9c65a95 drivers/pci/dwc/pci-imx6.c Andrey Smirnov 2017-03-28 1869 } else { 93b226f9c65a95 drivers/pci/dwc/pci-imx6.c Andrey Smirnov 2017-03-28 1870 dev_info(dev, "Link: Gen2 disabled\n"); 93b226f9c65a95 drivers/pci/dwc/pci-imx6.c Andrey Smirnov 2017-03-28 1871 } fa33a6d87eac1a drivers/pci/host/pci-imx6.c Marek Vasut 2013-12-12 1872 442ec4c04d1235 drivers/pci/dwc/pci-imx6.c Kishon Vijay Abraham I 2017-02-15 1873 tmp = dw_pcie_readl_dbi(pci, PCIE_RC_LCSR); 13957652f7242a drivers/pci/host/pci-imx6.c Bjorn Helgaas 2016-10-06 1874 dev_info(dev, "Link up, Gen%i\n", (tmp >> 16) & 0xf); a0427464cf4c4a drivers/pci/host/pci-imx6.c Troy Kisky 2015-06-12 1875 return 0; 54a47a83421a3b drivers/pci/host/pci-imx6.c Lucas Stach 2016-01-25 1876 54a47a83421a3b drivers/pci/host/pci-imx6.c Lucas Stach 2016-01-25 1877 err_reset_phy: 13957652f7242a drivers/pci/host/pci-imx6.c Bjorn Helgaas 2016-10-06 1878 dev_dbg(dev, "PHY DEBUG_R0=0x%08x DEBUG_R1=0x%08x\n", 60ef4b072ba089 drivers/pci/controller/dwc/pci-imx6.c Andrey Smirnov 2019-04-14 1879 dw_pcie_readl_dbi(pci, PCIE_PORT_DEBUG0), 60ef4b072ba089 drivers/pci/controller/dwc/pci-imx6.c Andrey Smirnov 2019-04-14 1880 dw_pcie_readl_dbi(pci, PCIE_PORT_DEBUG1)); 2a6a85d5368e55 drivers/pci/host/pci-imx6.c Bjorn Helgaas 2016-10-11 1881 imx6_pcie_reset_phy(imx6_pcie); d1fcbc345b82cd drivers/pci/controller/dwc/pci-imx6.c Richard Zhu 2019-11-28 1882 if (!IS_ENABLED(CONFIG_PCI_IMX6_COMPLIANCE_TEST)) { d1fcbc345b82cd drivers/pci/controller/dwc/pci-imx6.c Richard Zhu 2019-11-28 1883 imx6_pcie_clk_disable(imx6_pcie); d1fcbc345b82cd drivers/pci/controller/dwc/pci-imx6.c Richard Zhu 2019-11-28 1884 if (imx6_pcie->vpcie != NULL) d1fcbc345b82cd drivers/pci/controller/dwc/pci-imx6.c Richard Zhu 2019-11-28 1885 regulator_disable(imx6_pcie->vpcie); d1fcbc345b82cd drivers/pci/controller/dwc/pci-imx6.c Richard Zhu 2019-11-28 1886 if (imx6_pcie->epdev_on != NULL) d1fcbc345b82cd drivers/pci/controller/dwc/pci-imx6.c Richard Zhu 2019-11-28 1887 regulator_disable(imx6_pcie->epdev_on); d1fcbc345b82cd drivers/pci/controller/dwc/pci-imx6.c Richard Zhu 2019-11-28 1888 } d1fcbc345b82cd drivers/pci/controller/dwc/pci-imx6.c Richard Zhu 2019-11-28 1889 54a47a83421a3b drivers/pci/host/pci-imx6.c Lucas Stach 2016-01-25 1890 return ret; fa33a6d87eac1a drivers/pci/host/pci-imx6.c Marek Vasut 2013-12-12 1891 } fa33a6d87eac1a drivers/pci/host/pci-imx6.c Marek Vasut 2013-12-12 1892 f503843f85d287 drivers/pci/controller/dwc/pci-imx6.c Richard Zhu 2019-11-22 1893 static void pci_imx_set_msi_en(struct pcie_port *pp) f503843f85d287 drivers/pci/controller/dwc/pci-imx6.c Richard Zhu 2019-11-22 1894 { f503843f85d287 drivers/pci/controller/dwc/pci-imx6.c Richard Zhu 2019-11-22 1895 u16 val; f503843f85d287 drivers/pci/controller/dwc/pci-imx6.c Richard Zhu 2019-11-22 1896 struct dw_pcie *pci = to_dw_pcie_from_pp(pp); f503843f85d287 drivers/pci/controller/dwc/pci-imx6.c Richard Zhu 2019-11-22 1897 f503843f85d287 drivers/pci/controller/dwc/pci-imx6.c Richard Zhu 2019-11-22 1898 if (pci_msi_enabled()) { 7b842d74f6f105 drivers/pci/controller/dwc/pci-imx6.c Richard Zhu 2020-02-20 1899 dw_pcie_dbi_ro_wr_en(pci); f503843f85d287 drivers/pci/controller/dwc/pci-imx6.c Richard Zhu 2019-11-22 1900 val = dw_pcie_readw_dbi(pci, PCIE_RC_IMX6_MSI_CAP + f503843f85d287 drivers/pci/controller/dwc/pci-imx6.c Richard Zhu 2019-11-22 1901 PCI_MSI_FLAGS); f503843f85d287 drivers/pci/controller/dwc/pci-imx6.c Richard Zhu 2019-11-22 1902 val |= PCI_MSI_FLAGS_ENABLE; 112ade807b909b drivers/pci/controller/dwc/pci-imx6.c Richard Zhu 2020-05-14 1903 val &= ~PCI_MSI_FLAGS_64BIT; f503843f85d287 drivers/pci/controller/dwc/pci-imx6.c Richard Zhu 2019-11-22 1904 dw_pcie_writew_dbi(pci, PCIE_RC_IMX6_MSI_CAP + PCI_MSI_FLAGS, f503843f85d287 drivers/pci/controller/dwc/pci-imx6.c Richard Zhu 2019-11-22 1905 val); 7b842d74f6f105 drivers/pci/controller/dwc/pci-imx6.c Richard Zhu 2020-02-20 1906 dw_pcie_dbi_ro_wr_dis(pci); f503843f85d287 drivers/pci/controller/dwc/pci-imx6.c Richard Zhu 2019-11-22 1907 } f503843f85d287 drivers/pci/controller/dwc/pci-imx6.c Richard Zhu 2019-11-22 1908 } f503843f85d287 drivers/pci/controller/dwc/pci-imx6.c Richard Zhu 2019-11-22 1909 4a301766f5263d drivers/pci/dwc/pci-imx6.c Bjorn Andersson 2017-07-15 1910 static int imx6_pcie_host_init(struct pcie_port *pp) fa33a6d87eac1a drivers/pci/host/pci-imx6.c Marek Vasut 2013-12-12 1911 { 442ec4c04d1235 drivers/pci/dwc/pci-imx6.c Kishon Vijay Abraham I 2017-02-15 1912 struct dw_pcie *pci = to_dw_pcie_from_pp(pp); 442ec4c04d1235 drivers/pci/dwc/pci-imx6.c Kishon Vijay Abraham I 2017-02-15 1913 struct imx6_pcie *imx6_pcie = to_imx6_pcie(pci); bb38919ec56e07 drivers/pci/host/pci-imx6.c Sean Cross 2013-09-26 1914 d95659f2bbd85d drivers/pci/controller/dwc/pci-imx6.c Fugang Duan 2019-11-02 1915 if (gpio_is_valid(imx6_pcie->dis_gpio)) d95659f2bbd85d drivers/pci/controller/dwc/pci-imx6.c Fugang Duan 2019-11-02 1916 gpio_set_value_cansleep(imx6_pcie->dis_gpio, 1); bb38919ec56e07 drivers/pci/host/pci-imx6.c Sean Cross 2013-09-26 1917 dw_pcie_setup_rc(pp); f503843f85d287 drivers/pci/controller/dwc/pci-imx6.c Richard Zhu 2019-11-22 1918 pci_imx_set_msi_en(pp); d1fcbc345b82cd drivers/pci/controller/dwc/pci-imx6.c Richard Zhu 2019-11-28 1919 if (imx6_pcie_establish_link(imx6_pcie)) d1fcbc345b82cd drivers/pci/controller/dwc/pci-imx6.c Richard Zhu 2019-11-28 1920 return -ENODEV; 6e8f69523e69ae drivers/pci/controller/dwc/pci-imx6.c Richard Zhu 2020-10-19 1921 dw_pcie_msi_init(pp); d1dc9749a5b823 drivers/pci/host/pci-imx6.c Lucas Stach 2014-03-28 1922 4a301766f5263d drivers/pci/dwc/pci-imx6.c Bjorn Andersson 2017-07-15 1923 return 0; bb38919ec56e07 drivers/pci/host/pci-imx6.c Sean Cross 2013-09-26 1924 } bb38919ec56e07 drivers/pci/host/pci-imx6.c Sean Cross 2013-09-26 1925 4ab2e7c0df6b8b drivers/pci/dwc/pci-imx6.c Jisheng Zhang 2017-06-05 1926 static const struct dw_pcie_host_ops imx6_pcie_host_ops = { bb38919ec56e07 drivers/pci/host/pci-imx6.c Sean Cross 2013-09-26 1927 .host_init = imx6_pcie_host_init, bb38919ec56e07 drivers/pci/host/pci-imx6.c Sean Cross 2013-09-26 1928 }; bb38919ec56e07 drivers/pci/host/pci-imx6.c Sean Cross 2013-09-26 1929 bde4a5a00e761f drivers/pci/dwc/pci-imx6.c Andrey Smirnov 2017-03-28 1930 static int imx6_add_pcie_port(struct imx6_pcie *imx6_pcie, bb38919ec56e07 drivers/pci/host/pci-imx6.c Sean Cross 2013-09-26 1931 struct platform_device *pdev) bb38919ec56e07 drivers/pci/host/pci-imx6.c Sean Cross 2013-09-26 1932 { 442ec4c04d1235 drivers/pci/dwc/pci-imx6.c Kishon Vijay Abraham I 2017-02-15 1933 struct dw_pcie *pci = imx6_pcie->pci; 442ec4c04d1235 drivers/pci/dwc/pci-imx6.c Kishon Vijay Abraham I 2017-02-15 1934 struct pcie_port *pp = &pci->pp; 442ec4c04d1235 drivers/pci/dwc/pci-imx6.c Kishon Vijay Abraham I 2017-02-15 1935 struct device *dev = &pdev->dev; bb38919ec56e07 drivers/pci/host/pci-imx6.c Sean Cross 2013-09-26 1936 int ret; bb38919ec56e07 drivers/pci/host/pci-imx6.c Sean Cross 2013-09-26 1937 d1dc9749a5b823 drivers/pci/host/pci-imx6.c Lucas Stach 2014-03-28 1938 if (IS_ENABLED(CONFIG_PCI_MSI)) { d1dc9749a5b823 drivers/pci/host/pci-imx6.c Lucas Stach 2014-03-28 1939 pp->msi_irq = platform_get_irq_byname(pdev, "msi"); d1dc9749a5b823 drivers/pci/host/pci-imx6.c Lucas Stach 2014-03-28 1940 if (pp->msi_irq <= 0) { 13957652f7242a drivers/pci/host/pci-imx6.c Bjorn Helgaas 2016-10-06 1941 dev_err(dev, "failed to get MSI irq\n"); d1dc9749a5b823 drivers/pci/host/pci-imx6.c Lucas Stach 2014-03-28 1942 return -ENODEV; d1dc9749a5b823 drivers/pci/host/pci-imx6.c Lucas Stach 2014-03-28 1943 } d1dc9749a5b823 drivers/pci/host/pci-imx6.c Lucas Stach 2014-03-28 1944 } d1dc9749a5b823 drivers/pci/host/pci-imx6.c Lucas Stach 2014-03-28 1945 bb38919ec56e07 drivers/pci/host/pci-imx6.c Sean Cross 2013-09-26 1946 pp->ops = &imx6_pcie_host_ops; bb38919ec56e07 drivers/pci/host/pci-imx6.c Sean Cross 2013-09-26 1947 bb38919ec56e07 drivers/pci/host/pci-imx6.c Sean Cross 2013-09-26 1948 ret = dw_pcie_host_init(pp); bb38919ec56e07 drivers/pci/host/pci-imx6.c Sean Cross 2013-09-26 1949 if (ret) { 13957652f7242a drivers/pci/host/pci-imx6.c Bjorn Helgaas 2016-10-06 1950 dev_err(dev, "failed to initialize host\n"); bb38919ec56e07 drivers/pci/host/pci-imx6.c Sean Cross 2013-09-26 1951 return ret; bb38919ec56e07 drivers/pci/host/pci-imx6.c Sean Cross 2013-09-26 1952 } bb38919ec56e07 drivers/pci/host/pci-imx6.c Sean Cross 2013-09-26 1953 bb38919ec56e07 drivers/pci/host/pci-imx6.c Sean Cross 2013-09-26 1954 return 0; bb38919ec56e07 drivers/pci/host/pci-imx6.c Sean Cross 2013-09-26 1955 } bb38919ec56e07 drivers/pci/host/pci-imx6.c Sean Cross 2013-09-26 1956 112ade807b909b drivers/pci/controller/dwc/pci-imx6.c Richard Zhu 2020-05-14 1957 static int imx6_pcie_start_link(struct dw_pcie *pci) 112ade807b909b drivers/pci/controller/dwc/pci-imx6.c Richard Zhu 2020-05-14 1958 { 112ade807b909b drivers/pci/controller/dwc/pci-imx6.c Richard Zhu 2020-05-14 1959 struct device *dev = pci->dev; 112ade807b909b drivers/pci/controller/dwc/pci-imx6.c Richard Zhu 2020-05-14 1960 112ade807b909b drivers/pci/controller/dwc/pci-imx6.c Richard Zhu 2020-05-14 @1961 if (dw_pcie_link_up(pci)) { 112ade807b909b drivers/pci/controller/dwc/pci-imx6.c Richard Zhu 2020-05-14 1962 dev_dbg(dev, "link is already up\n"); 112ade807b909b drivers/pci/controller/dwc/pci-imx6.c Richard Zhu 2020-05-14 1963 return 0; 112ade807b909b drivers/pci/controller/dwc/pci-imx6.c Richard Zhu 2020-05-14 1964 } 112ade807b909b drivers/pci/controller/dwc/pci-imx6.c Richard Zhu 2020-05-14 1965 112ade807b909b drivers/pci/controller/dwc/pci-imx6.c Richard Zhu 2020-05-14 1966 /* Start LTSSM. */ 112ade807b909b drivers/pci/controller/dwc/pci-imx6.c Richard Zhu 2020-05-14 1967 imx6_pcie_ltssm_enable(dev); 112ade807b909b drivers/pci/controller/dwc/pci-imx6.c Richard Zhu 2020-05-14 1968 112ade807b909b drivers/pci/controller/dwc/pci-imx6.c Richard Zhu 2020-05-14 1969 return 0; 112ade807b909b drivers/pci/controller/dwc/pci-imx6.c Richard Zhu 2020-05-14 1970 } 112ade807b909b drivers/pci/controller/dwc/pci-imx6.c Richard Zhu 2020-05-14 1971 :::::: The code at line 1961 was first introduced by commit :::::: 112ade807b909b5bb44dd16eca0313a2085b4c0c MLK-24012-12 pci: imx: add the imx8qxp ep support :::::: TO: Richard Zhu <hongxing.zhu(a)nxp.com&gt; :::::: CC: Richard Zhu <hongxing.zhu(a)nxp.com&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org