From 2ba29e270e977b213a7d58ae1152c23a1c3074a3 Mon Sep 17 00:00:00 2001 From: Wei Yang Date: Fri, 6 Sep 2013 09:45:56 +0800 Subject: [PATCH] PCI: Use pci_is_root_bus() to check for root bus In __pci_bus_size_bridges() we check whether a bus is a root bus by testing bus->self. As indicated by commit 79af72d7 ("PCI: pci_is_root_bus helper"), bus->self == NULL is not a proper way to check for a root bus. One issue is that "virtual" buses added for SR-IOV (via virtfn_add_bus()) have bus->self == NULL but are not root buses. This patch changes it to pci_is_root_bus() to check whether it is a root bus. [bhelgaas: changelog] Signed-off-by: Wei Yang Signed-off-by: Bjorn Helgaas --- drivers/pci/setup-bus.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/pci/setup-bus.c b/drivers/pci/setup-bus.c index bc26d7990cc3..8df686c48bd1 100644 --- a/drivers/pci/setup-bus.c +++ b/drivers/pci/setup-bus.c @@ -1136,7 +1136,7 @@ void __ref __pci_bus_size_bridges(struct pci_bus *bus, } /* The root bus? */ - if (!bus->self) + if (pci_is_root_bus(bus)) return; switch (bus->self->class >> 8) { -- 2.20.1