[PATCH 1/2] PCI: layerscape: Add support for Link down notification

From: Frank Li
Date: Thu Jun 15 2023 - 12:42:51 EST


Add support to pass Link down notification to Endpoint function driver
so that the LINK_DOWN event can be processed by the function.

Signed-off-by: Frank Li <Frank.Li@xxxxxxx>
---
drivers/pci/controller/dwc/pci-layerscape-ep.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/drivers/pci/controller/dwc/pci-layerscape-ep.c b/drivers/pci/controller/dwc/pci-layerscape-ep.c
index de4c1758a6c3..4e4fdd1dfea7 100644
--- a/drivers/pci/controller/dwc/pci-layerscape-ep.c
+++ b/drivers/pci/controller/dwc/pci-layerscape-ep.c
@@ -88,6 +88,7 @@ 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) {
+ pci_epc_linkdown(pci->ep.epc);
dev_dbg(pci->dev, "Link down\n");
} else if (val & PEX_PF0_PME_MES_DR_HRD) {
dev_dbg(pci->dev, "Hot reset\n");
--
2.34.1