PCI: layerscape-ep: Use the generic dw_pcie_ep_linkdown() API to handle Link Down...

Now that dw_pcie_ep_linkdown() is available, use it. This also handles the
reinitialization of DWC non-sticky registers in addition to sending the
notification to EPF drivers.

Closes: https://lore.kernel.org/linux-pci/20240528195539.GA458945@bhelgaas
Link: https://lore.kernel.org/linux-pci/20240606-pci-deinit-v1-5-4395534520dc@linaro.org
Reported-by: Bjorn Helgaas <helgaas@kernel.org>
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Reviewed-by: Niklas Cassel <cassel@kernel.org>

diff --git a/drivers/pci/controller/dwc/pci-layerscape-ep.c b/drivers/pci/controller/dwc/pci-layerscape-ep.c
index 35bb481564c75b04c91290fcc955d515bdf5c539..a4a800699f898db8f149e4541bc9886fe6dd81de 100644 (file)
--- a/drivers/pci/controller/dwc/pci-layerscape-ep.c
+++ b/drivers/pci/controller/dwc/pci-layerscape-ep.c
@@ -104,7 +104,7 @@ static irqreturn_t ls_pcie_ep_event_handler(int irq, void *dev_id)
                dev_dbg(pci->dev, "Link up\n");
        } else if (val & PEX_PF0_PME_MES_DR_LDD) {
                dev_dbg(pci->dev, "Link down\n");
-               pci_epc_linkdown(pci->ep.epc);
+               dw_pcie_ep_linkdown(&pci->ep);
        } else if (val & PEX_PF0_PME_MES_DR_HRD) {
                dev_dbg(pci->dev, "Hot reset\n");
        }