PCI: layerscape-ep: Use the generic dw_pcie_ep_linkdown() API to handle Link Down event
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>
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@ -104,7 +104,7 @@ static irqreturn_t ls_pcie_ep_event_handler(int irq, void *dev_id)
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dev_dbg(pci->dev, "Link up\n");
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} else if (val & PEX_PF0_PME_MES_DR_LDD) {
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dev_dbg(pci->dev, "Link down\n");
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pci_epc_linkdown(pci->ep.epc);
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dw_pcie_ep_linkdown(&pci->ep);
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} else if (val & PEX_PF0_PME_MES_DR_HRD) {
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dev_dbg(pci->dev, "Hot reset\n");
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}
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