Use pci_scan_root_bus() instead of pci_create_root_bus() +
pci_scan_child_bus() for simplicity.

Signed-off-by: Yijing Wang <wangyij...@huawei.com>
CC: Mohit Kumar <mohit.ku...@st.com>
CC: Jingoo Han <jg1....@samsung.com>
---
 drivers/pci/host/pcie-designware.c |    4 +---
 1 files changed, 1 insertions(+), 3 deletions(-)

diff --git a/drivers/pci/host/pcie-designware.c 
b/drivers/pci/host/pcie-designware.c
index 93778b9..3d7d6fb 100644
--- a/drivers/pci/host/pcie-designware.c
+++ b/drivers/pci/host/pcie-designware.c
@@ -728,13 +728,11 @@ static struct pci_bus *dw_pcie_scan_bus(int nr, struct 
pci_sys_data *sys)
        struct pcie_port *pp = sys_to_pcie(sys);
 
        pp->root_bus_nr = sys->busnr;
-       bus = pci_create_root_bus(pp->dev, -1, sys->busnr,
+       bus = pci_scan_root_bus(pp->dev, -1, sys->busnr,
                                  &dw_pcie_ops, sys, &sys->resources);
        if (!bus)
                return NULL;
 
-       pci_scan_child_bus(bus);
-
        if (bus && pp->ops->scan_bus)
                pp->ops->scan_bus(pp);
 
-- 
1.7.1

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