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ia64/PCI: SN: convert to pci_scan_root_bus() for correct root bus resources

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Convert from pci_scan_bus() to pci_scan_root_bus().  Supply the root
bus resources from bussoft.  When we move the resource adjustment from
pcibios_fixup_resources() to the PCI core, it will be important to have
the root bus resources correct from the beginning.

CC: Tony Luck <tony.luck@intel.com>
CC: Jack Steiner <steiner@sgi.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
This commit is contained in:
Bjorn Helgaas 2012-02-23 20:19:01 -07:00
parent 9f786d033d
commit f920b55de4
1 changed files with 9 additions and 5 deletions
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14
arch/ia64/sn/kernel/io_init.c
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@ -297,7 +297,8 @@ sn_pci_controller_fixup(int segment, int busnum, struct pci_bus *bus)
s64 status = 0;
struct pci_controller *controller;
struct pcibus_bussoft *prom_bussoft_ptr;
LIST_HEAD(resources);
int i;
status = sal_get_pcibus_info((u64) segment, (u64) busnum,
(u64) ia64_tpa(&prom_bussoft_ptr));
@ -315,7 +316,13 @@ sn_pci_controller_fixup(int segment, int busnum, struct pci_bus *bus)
*/
controller->platform_data = prom_bussoft_ptr;
bus = pci_scan_bus(busnum, &pci_root_ops, controller);
sn_legacy_pci_window_fixup(controller,
prom_bussoft_ptr->bs_legacy_io,
prom_bussoft_ptr->bs_legacy_mem);
for (i = 0; i < controller->windows; i++)
pci_add_resource(&resources, &controller->window[i].resource);
bus = pci_scan_root_bus(NULL, busnum, &pci_root_ops, controller,
&resources);
if (bus == NULL)
goto error_return; /* error, or bus already scanned */
@ -348,9 +355,6 @@ sn_bus_fixup(struct pci_bus *bus)
return;
}
sn_common_bus_fixup(bus, prom_bussoft_ptr);
sn_legacy_pci_window_fixup(PCI_CONTROLLER(bus),
prom_bussoft_ptr->bs_legacy_io,
prom_bussoft_ptr->bs_legacy_mem);
}
list_for_each_entry(pci_dev, &bus->devices, bus_list) {
sn_io_slot_fixup(pci_dev);