Pci_scan_bus() is called by legacy pci host drivers,
the legacy host drivers mean they use NUll as parent
device, use all IO/MEM as default resources. Rename
pci_scan_bus() to pci_scan_bus_legacy() for better
readability.

Signed-off-by: Yijing Wang <wangyij...@huawei.com>
---
 arch/alpha/kernel/sys_nautilus.c  |    2 +-
 arch/m68k/coldfire/pci.c          |    2 +-
 arch/sparc/kernel/pcic.c          |    2 +-
 arch/unicore32/kernel/pci.c       |    2 +-
 drivers/pci/hotplug/ibmphp_core.c |    2 +-
 drivers/pci/probe.c               |    4 ++--
 include/linux/pci.h               |    2 +-
 7 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/arch/alpha/kernel/sys_nautilus.c b/arch/alpha/kernel/sys_nautilus.c
index 4ae4a40..2c864bb 100644
--- a/arch/alpha/kernel/sys_nautilus.c
+++ b/arch/alpha/kernel/sys_nautilus.c
@@ -206,7 +206,7 @@ nautilus_init_pci(void)
        unsigned long memtop = max_low_pfn << PAGE_SHIFT;
 
        /* Scan our single hose.  */
-       bus = pci_scan_bus(0, alpha_mv.pci_ops, hose);
+       bus = pci_scan_bus_legacy(0, alpha_mv.pci_ops, hose);
        hose->bus = bus;
        pcibios_claim_one_bus(bus);
 
diff --git a/arch/m68k/coldfire/pci.c b/arch/m68k/coldfire/pci.c
index d45f087..0ef4dd4 100644
--- a/arch/m68k/coldfire/pci.c
+++ b/arch/m68k/coldfire/pci.c
@@ -312,7 +312,7 @@ static int __init mcf_pci_init(void)
        set_current_state(TASK_UNINTERRUPTIBLE);
        schedule_timeout(msecs_to_jiffies(200));
 
-       rootbus = pci_scan_bus(0, &mcf_pci_ops, NULL);
+       rootbus = pci_scan_bus_legacy(0, &mcf_pci_ops, NULL);
        rootbus->resource[0] = &mcf_pci_io;
        rootbus->resource[1] = &mcf_pci_mem;
 
diff --git a/arch/sparc/kernel/pcic.c b/arch/sparc/kernel/pcic.c
index 7a82fe2..f7edc97 100644
--- a/arch/sparc/kernel/pcic.c
+++ b/arch/sparc/kernel/pcic.c
@@ -390,7 +390,7 @@ static void __init pcic_pbm_scan_bus(struct linux_pcic 
*pcic)
 {
        struct linux_pbm_info *pbm = &pcic->pbm;
 
-       pbm->pci_bus = pci_scan_bus(pbm->pci_first_busno, &pcic_ops, pbm);
+       pbm->pci_bus = pci_scan_bus_legacy(pbm->pci_first_busno, &pcic_ops, 
pbm);
        if (pbm->pci_bus)
                pci_bus_add_devices(pbm->pci_bus);
 #if 0 /* deadwood transplanted from sparc64 */
diff --git a/arch/unicore32/kernel/pci.c b/arch/unicore32/kernel/pci.c
index 3d82024..2e238b4 100644
--- a/arch/unicore32/kernel/pci.c
+++ b/arch/unicore32/kernel/pci.c
@@ -258,7 +258,7 @@ static int __init pci_common_init(void)
 
        pci_puv3_preinit();
 
-       puv3_bus = pci_scan_bus(0, &pci_puv3_ops, NULL);
+       puv3_bus = pci_scan_bus_legacy(0, &pci_puv3_ops, NULL);
 
        if (!puv3_bus)
                panic("PCI: unable to scan bus!");
diff --git a/drivers/pci/hotplug/ibmphp_core.c 
b/drivers/pci/hotplug/ibmphp_core.c
index 86e3bfd..4ade1b4 100644
--- a/drivers/pci/hotplug/ibmphp_core.c
+++ b/drivers/pci/hotplug/ibmphp_core.c
@@ -765,7 +765,7 @@ static u8 bus_structure_fixup(u8 busno)
                                        (l != 0x0000) && (l != 0xffff)) {
                        debug("%s - Inside bus_structure_fixup()\n",
                                                        __func__);
-                       b = pci_scan_bus(busno, ibmphp_pci_bus->ops, NULL);
+                       b = pci_scan_bus_legacy(busno, ibmphp_pci_bus->ops, 
NULL);
                        if (b)
                                pci_bus_add_devices(b);
                        break;
diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index e44de73..ed894cb 100644
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -2091,7 +2091,7 @@ struct pci_bus *pci_scan_root_bus(struct device *parent, 
int bus,
 }
 EXPORT_SYMBOL(pci_scan_root_bus);
 
-struct pci_bus *pci_scan_bus(int bus, struct pci_ops *ops,
+struct pci_bus *pci_scan_bus_legacy(int bus, struct pci_ops *ops,
                                        void *sysdata)
 {
        LIST_HEAD(resources);
@@ -2108,7 +2108,7 @@ struct pci_bus *pci_scan_bus(int bus, struct pci_ops *ops,
        }
        return b;
 }
-EXPORT_SYMBOL(pci_scan_bus);
+EXPORT_SYMBOL(pci_scan_bus_legacy);
 
 /**
  * pci_rescan_bus_bridge_resize - scan a PCI bus for devices.
diff --git a/include/linux/pci.h b/include/linux/pci.h
index 55b2c81..a6fa2f1 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -769,7 +769,7 @@ void pcibios_bus_to_resource(struct pci_bus *bus, struct 
resource *res,
 void pcibios_scan_specific_bus(int busn);
 struct pci_bus *pci_find_bus(int domain, int busnr);
 void pci_bus_add_devices(const struct pci_bus *bus);
-struct pci_bus *pci_scan_bus(int bus, struct pci_ops *ops, void *sysdata);
+struct pci_bus *pci_scan_bus_legacy(int bus, struct pci_ops *ops, void 
*sysdata);
 struct pci_bus *pci_create_root_bus(struct device *parent, int bus,
                                    struct pci_ops *ops, void *sysdata,
                                    struct list_head *resources);
-- 
1.7.1

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