[pci:controller/qcom 12/12] drivers/pci/controller/dwc/pcie-qcom-ep.c:658:17: error: implicit declaration of function 'dw_pcie_ep_linkdown'; did you mean 'dw_pcie_ep_linkup'?

[kernel test robot <lkp@intel.com>]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/pci/pci.git controller/qcom
head:   1b36cee89f5f82bd04538b231e4261ed517ae174
commit: 1b36cee89f5f82bd04538b231e4261ed517ae174 [12/12] PCI: qcom-ep: Use the generic dw_pcie_ep_linkdown() API to handle Link Down event
config: alpha-allyesconfig (https://download.01.org/0day-ci/archive/20240525/202405250716.lpmrTGyQ-lkp@intel.com/config)
compiler: alpha-linux-gcc (GCC) 13.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240525/202405250716.lpmrTGyQ-lkp@intel.com/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@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202405250716.lpmrTGyQ-lkp@intel.com/

All errors (new ones prefixed by >>):

   drivers/pci/controller/dwc/pcie-qcom-ep.c: In function 'qcom_pcie_ep_global_irq_thread':
>> drivers/pci/controller/dwc/pcie-qcom-ep.c:658:17: error: implicit declaration of function 'dw_pcie_ep_linkdown'; did you mean 'dw_pcie_ep_linkup'? [-Werror=implicit-function-declaration]
     658 |                 dw_pcie_ep_linkdown(&pci->ep);
         |                 ^~~~~~~~~~~~~~~~~~~
         |                 dw_pcie_ep_linkup
   cc1: some warnings being treated as errors


vim +658 drivers/pci/controller/dwc/pcie-qcom-ep.c

   641	
   642	/* TODO: Notify clients about PCIe state change */
   643	static irqreturn_t qcom_pcie_ep_global_irq_thread(int irq, void *data)
   644	{
   645		struct qcom_pcie_ep *pcie_ep = data;
   646		struct dw_pcie *pci = &pcie_ep->pci;
   647		struct device *dev = pci->dev;
   648		u32 status = readl_relaxed(pcie_ep->parf + PARF_INT_ALL_STATUS);
   649		u32 mask = readl_relaxed(pcie_ep->parf + PARF_INT_ALL_MASK);
   650		u32 dstate, val;
   651	
   652		writel_relaxed(status, pcie_ep->parf + PARF_INT_ALL_CLEAR);
   653		status &= mask;
   654	
   655		if (FIELD_GET(PARF_INT_ALL_LINK_DOWN, status)) {
   656			dev_dbg(dev, "Received Linkdown event\n");
   657			pcie_ep->link_status = QCOM_PCIE_EP_LINK_DOWN;
 > 658			dw_pcie_ep_linkdown(&pci->ep);
   659		} else if (FIELD_GET(PARF_INT_ALL_BME, status)) {
   660			dev_dbg(dev, "Received BME event. Link is enabled!\n");
   661			pcie_ep->link_status = QCOM_PCIE_EP_LINK_ENABLED;
   662			qcom_pcie_ep_icc_update(pcie_ep);
   663			pci_epc_bme_notify(pci->ep.epc);
   664		} else if (FIELD_GET(PARF_INT_ALL_PM_TURNOFF, status)) {
   665			dev_dbg(dev, "Received PM Turn-off event! Entering L23\n");
   666			val = readl_relaxed(pcie_ep->parf + PARF_PM_CTRL);
   667			val |= PARF_PM_CTRL_READY_ENTR_L23;
   668			writel_relaxed(val, pcie_ep->parf + PARF_PM_CTRL);
   669		} else if (FIELD_GET(PARF_INT_ALL_DSTATE_CHANGE, status)) {
   670			dstate = dw_pcie_readl_dbi(pci, DBI_CON_STATUS) &
   671						   DBI_CON_STATUS_POWER_STATE_MASK;
   672			dev_dbg(dev, "Received D%d state event\n", dstate);
   673			if (dstate == 3) {
   674				val = readl_relaxed(pcie_ep->parf + PARF_PM_CTRL);
   675				val |= PARF_PM_CTRL_REQ_EXIT_L1;
   676				writel_relaxed(val, pcie_ep->parf + PARF_PM_CTRL);
   677			}
   678		} else if (FIELD_GET(PARF_INT_ALL_LINK_UP, status)) {
   679			dev_dbg(dev, "Received Linkup event. Enumeration complete!\n");
   680			dw_pcie_ep_linkup(&pci->ep);
   681			pcie_ep->link_status = QCOM_PCIE_EP_LINK_UP;
   682		} else {
   683			dev_err(dev, "Received unknown event: %d\n", status);
   684		}
   685	
   686		return IRQ_HANDLED;
   687	}
   688	

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