From: Bjorn Helgaas <bhelg...@google.com>

Make sure PCIe MPS settings are valid when we enumerate a new hierarchy.

Based-on-patch-by: Jon Mason <jon.ma...@broadcom.com>
Signed-off-by: Bjorn Helgaas <bhelg...@google.com>
---
 drivers/pci/host/pci-xgene.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/pci/host/pci-xgene.c b/drivers/pci/host/pci-xgene.c
index 7c3b54b9eb17..8091a8778ae7 100644
--- a/drivers/pci/host/pci-xgene.c
+++ b/drivers/pci/host/pci-xgene.c
@@ -638,7 +638,7 @@ static int xgene_pcie_probe_bridge(struct platform_device 
*pdev)
        struct device_node *dn = dev->of_node;
        struct xgene_pcie_port *port;
        resource_size_t iobase = 0;
-       struct pci_bus *bus;
+       struct pci_bus *bus, *child;
        int ret;
        LIST_HEAD(res);
 
@@ -681,6 +681,8 @@ static int xgene_pcie_probe_bridge(struct platform_device 
*pdev)
 
        pci_scan_child_bus(bus);
        pci_assign_unassigned_bus_resources(bus);
+       list_for_each_entry(child, &bus->children, node)
+               pcie_bus_configure_settings(child);
        pci_bus_add_devices(bus);
        return 0;
 

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