PCI: Convert pcibios_resource_to_bus() to take a pci_bus, not a pci_dev

These interfaces:

  pcibios_resource_to_bus(struct pci_dev *dev, *bus_region, *resource)
  pcibios_bus_to_resource(struct pci_dev *dev, *resource, *bus_region)

took a pci_dev, but they really depend only on the pci_bus.  And we want to
use them in resource allocation paths where we have the bus but not a
device, so this patch converts them to take the pci_bus instead of the
pci_dev:

  pcibios_resource_to_bus(struct pci_bus *bus, *bus_region, *resource)
  pcibios_bus_to_resource(struct pci_bus *bus, *resource, *bus_region)

In fact, with standard PCI-PCI bridges, they only depend on the host
bridge, because that's the only place address translation occurs, but
we aren't going that far yet.

[bhelgaas: changelog]
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>

1 files changed, 3 insertions, 3 deletions

diff --git a/arch/sparc/kernel/pci.c b/arch/sparc/kernel/pci.c
index cb021453de2a..7de8d1f590b7 100644
--- a/arch/sparc/kernel/pci.c
+++ b/arch/sparc/kernel/pci.c
@@ -392,7 +392,7 @@ static void apb_fake_ranges(struct pci_dev *dev,
         res->flags = IORESOURCE_IO;
         region.start = (first << 21);
         region.end = (last << 21) + ((1 << 21) - 1);
-        pcibios_bus_to_resource(dev, res, &region);
+        pcibios_bus_to_resource(dev->bus, res, &region);
 
         pci_read_config_byte(dev, APB_MEM_ADDRESS_MAP, &map);
         apb_calc_first_last(map, &first, &last);
@@ -400,7 +400,7 @@ static void apb_fake_ranges(struct pci_dev *dev,
         res->flags = IORESOURCE_MEM;
         region.start = (first << 29);
         region.end = (last << 29) + ((1 << 29) - 1);
-        pcibios_bus_to_resource(dev, res, &region);
+        pcibios_bus_to_resource(dev->bus, res, &region);
 }
 
 static void pci_of_scan_bus(struct pci_pbm_info *pbm,
@@ -491,7 +491,7 @@ static void of_scan_pci_bridge(struct pci_pbm_info *pbm,
                 res->flags = flags;
                 region.start = GET_64BIT(ranges, 1);
                 region.end = region.start + size - 1;
-                pcibios_bus_to_resource(dev, res, &region);
+                pcibios_bus_to_resource(dev->bus, res, &region);
         }
 after_ranges:
         sprintf(bus->name, "PCI Bus %04x:%02x", pci_domain_nr(bus),