From 781fb7a3e4cdca28236ae23e2c77070ed3ae531f Mon Sep 17 00:00:00 2001 From: Benjamin Herrenschmidt Date: Mon, 19 Sep 2011 17:44:50 +0000 Subject: [PATCH] powerpc/pci: Call pcie_bus_configure_settings() This new function is used to properly setup the PCI Express Max Payload Size (and in some circumstances Max Read Request Size). Some systems will not operate properly if these aren't set correctly and the firmware doesn't always do it. Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/kernel/pci-common.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/arch/powerpc/kernel/pci-common.c b/arch/powerpc/kernel/pci-common.c index 32656f105250..1bd47f36b25f 100644 --- a/arch/powerpc/kernel/pci-common.c +++ b/arch/powerpc/kernel/pci-common.c @@ -1730,6 +1730,17 @@ void __devinit pcibios_scan_phb(struct pci_controller *hose) if (mode == PCI_PROBE_NORMAL) hose->last_busno = bus->subordinate = pci_scan_child_bus(bus); + + /* Configure PCI Express settings */ + if (bus) { + struct pci_bus *child; + list_for_each_entry(child, &bus->children, node) { + struct pci_dev *self = child->self; + if (!self) + continue; + pcie_bus_configure_settings(child, self->pcie_mpss); + } + } } static void fixup_hide_host_resource_fsl(struct pci_dev *dev) -- 2.20.1