commit fc2798502f860b18f3c7121e4dc659d3d9d28d74
author Yinghai Lu <yinghai@kernel.org> Mon Dec 09 22:54:40 2013 -0800
committer Bjorn Helgaas <bhelgaas@google.com> Sat Dec 21 10:06:10 2013 -0700
tree d15d6addb41d305e33c6f6d8e363b7272dc29a38
parent 0a5ef7b914be91dd257ae4f35223dd822dd3703a

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>

drivers/pci/rom.c

diff --git a/drivers/pci/rom.c b/drivers/pci/rom.c
index c5d0a08..5d59572 100644
--- a/drivers/pci/rom.c
+++ b/drivers/pci/rom.c
@@ -31,7 +31,7 @@
 	if (!res->flags)
 		return -1;
 
-	pcibios_resource_to_bus(pdev, &region, res);
+	pcibios_resource_to_bus(pdev->bus, &region, res);
 	pci_read_config_dword(pdev, pdev->rom_base_reg, &rom_addr);
 	rom_addr &= ~PCI_ROM_ADDRESS_MASK;
 	rom_addr |= region.start | PCI_ROM_ADDRESS_ENABLE;