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

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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>
This commit is contained in:
Manivannan Sadhasivam 2024-06-06 12:56:38 +05:30 committed by Bjorn Helgaas
parent 574621166c
commit b8747e10fd
1 changed files with 1 additions and 1 deletions
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2
drivers/pci/controller/dwc/pci-layerscape-ep.c
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@ -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");
}