From: Benjamin Herrenschmidt Date: Mon, 26 Sep 2011 04:22:39 +0000 (+1000) Subject: powerpc/pci: Don't configure PCIe settings when PCI_PROBE_ONLY is set X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=bb36c44557a4fcbaa17c0f2776e12a05a691b432;p=linux-beck.git powerpc/pci: Don't configure PCIe settings when PCI_PROBE_ONLY is set We don't want to configure PCI Express Max Payload Size or Max Read Request Size on systems that set that flag. The firmware will have done it for us, and under hypervisors such as pHyp we don't even see the parent switches and bridges and thus can make no assumption on what values are safe to use. Signed-off-by: Benjamin Herrenschmidt --- diff --git a/arch/powerpc/kernel/pci-common.c b/arch/powerpc/kernel/pci-common.c index 1bd47f36b25f..677ecccbe10d 100644 --- a/arch/powerpc/kernel/pci-common.c +++ b/arch/powerpc/kernel/pci-common.c @@ -1732,7 +1732,7 @@ void __devinit pcibios_scan_phb(struct pci_controller *hose) hose->last_busno = bus->subordinate = pci_scan_child_bus(bus); /* Configure PCI Express settings */ - if (bus) { + if (bus && !pci_has_flag(PCI_PROBE_ONLY)) { struct pci_bus *child; list_for_each_entry(child, &bus->children, node) { struct pci_dev *self = child->self;