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pci: Use helper to find device's root bus in pci_find_domain()

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Currently pci_find_domain() performs two functions - it locates the PCI
root bus above the given bus, then looks up that root bus's domain number.
This patch adds a helper function to perform the first task, finding the
root bus for a given PCI device.  This is then used in pci_find_domain().
This changes pci_find_domain()'s signature slightly, taking a PCIDevice
instead of a PCIBus - since all callers passed something of the form
dev->bus, this simplifies things slightly.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
David Gibson 2013-06-06 18:48:48 +10:00 • committed by Michael S. Tsirkin
parent 1ef7a2a2af
commit c473d18da1
4 changed files with 17 additions and 11 deletions
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3
hw/pci/pcie_aer.c
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@ -1022,8 +1022,7 @@ int do_pcie_aer_inject_error(Monitor *mon,
*ret_data = qobject_from_jsonf("{'id': %s, "
"'domain': %d, 'bus': %d, 'devfn': %d, "
"'ret': %d}",
id,
pci_find_domain(dev->bus),
id, pci_find_domain(dev),
pci_bus_num(dev->bus), dev->devfn,
ret);
assert(*ret_data);