PCI: use pci_is_root_bus() in pci_find_upstream_pcie_bridge()

Use pci_is_root_bus() in pci_find_upstream_pcie_bridge() to check if
the pci bus is root, for code consistency.

Reviewed-by: Alex Chiang <achiang@hp.com>
Reviewed-by: Grant Grundler <grundler@parisc-linux.org>
Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>

diff --git a/drivers/pci/search.c b/drivers/pci/search.c
index 650bc0a..e8cb505 100644 (file)
--- a/drivers/pci/search.c
+++ b/drivers/pci/search.c
@@ -29,7 +29,7 @@ pci_find_upstream_pcie_bridge(struct pci_dev *pdev)
        if (pdev->is_pcie)
                return NULL;
        while (1) {
-               if (!pdev->bus->parent)
+               if (pci_is_root_bus(pdev->bus))
                        break;
                pdev = pdev->bus->self;
                /* a p2p bridge */