The patch changes the argument of find_pci_host_bridge() to pci_bus.

Signed-off-by: Yinghai Lu <ying...@kernel.org>
Signed-off-by: Gavin Shan <sha...@linux.vnet.ibm.com>
---
 drivers/pci/host-bridge.c |   13 +++++--------
 1 file changed, 5 insertions(+), 8 deletions(-)

diff --git a/drivers/pci/host-bridge.c b/drivers/pci/host-bridge.c
index c19776a..fc16357 100644
--- a/drivers/pci/host-bridge.c
+++ b/drivers/pci/host-bridge.c
@@ -9,20 +9,17 @@
 
 #include "pci.h"
 
-static struct pci_bus *find_pci_root_bus(struct pci_dev *dev)
+static struct pci_bus *find_pci_root_bus(struct pci_bus *bus)
 {
-       struct pci_bus *bus;
-
-       bus = dev->bus;
        while (bus->parent)
                bus = bus->parent;
 
        return bus;
 }
 
-static struct pci_host_bridge *find_pci_host_bridge(struct pci_dev *dev)
+static struct pci_host_bridge *find_pci_host_bridge(struct pci_bus *bus)
 {
-       struct pci_bus *root_bus = find_pci_root_bus(dev);
+       struct pci_bus *root_bus = find_pci_root_bus(bus);
 
        return to_pci_host_bridge(root_bus->bridge);
 }
@@ -43,7 +40,7 @@ static bool resource_contains(struct resource *res1, struct 
resource *res2)
 void pcibios_resource_to_bus(struct pci_dev *dev, struct pci_bus_region 
*region,
                             struct resource *res)
 {
-       struct pci_host_bridge *bridge = find_pci_host_bridge(dev);
+       struct pci_host_bridge *bridge = find_pci_host_bridge(dev->bus);
        struct pci_host_bridge_window *window;
        resource_size_t offset = 0;
 
@@ -71,7 +68,7 @@ static bool region_contains(struct pci_bus_region *region1,
 void pcibios_bus_to_resource(struct pci_dev *dev, struct resource *res,
                             struct pci_bus_region *region)
 {
-       struct pci_host_bridge *bridge = find_pci_host_bridge(dev);
+       struct pci_host_bridge *bridge = find_pci_host_bridge(dev->bus);
        struct pci_host_bridge_window *window;
        resource_size_t offset = 0;
 
-- 
1.7.9.5

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