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

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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>
This commit is contained in:
Yinghai Lu
2013-12-09 22:54:40 -08:00
committed by Bjorn Helgaas
parent 0a5ef7b914
commit fc2798502f
17 changed files with 49 additions and 51 deletions
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2
drivers/pci/quirks.c
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@@ -343,7 +343,7 @@ static void quirk_io_region(struct pci_dev *dev, int port,
/* Convert from PCI bus to resource space */
bus_region.start = region;
bus_region.end = region + size - 1;
pcibios_bus_to_resource(dev, res, &bus_region);
pcibios_bus_to_resource(dev->bus, res, &bus_region);
if (!pci_claim_resource(dev, nr))
dev_info(&dev->dev, "quirk: %pR claimed by %s\n", res, name);