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PCI: assign ioapic resource at hotplug
We need to assign resources to ioapics being hot-added. This patch changes pbus_assign_resources_sorted() to assign resources if the ioapic has no assigned resources. Signed-off-by: Kenji Kaneshige <[email protected]> Signed-off-by: MUNEDA Takahiro <[email protected]> Signed-off-by: Satoru Takeuchi <[email protected]> Signed-off-by: Kristen Carlson Accardi <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
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1 changed files with 10 additions and 3 deletions
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@ -55,12 +55,19 @@ pbus_assign_resources_sorted(struct pci_bus *bus)
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list_for_each_entry(dev, &bus->devices, bus_list) {
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u16 class = dev->class >> 8;
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/* Don't touch classless devices or host bridges or ioapics. */
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/* Don't touch classless devices or host bridges. */
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if (class == PCI_CLASS_NOT_DEFINED ||
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class == PCI_CLASS_BRIDGE_HOST ||
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class == PCI_CLASS_SYSTEM_PIC)
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class == PCI_CLASS_BRIDGE_HOST)
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continue;
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/* Don't touch ioapics if it has the assigned resources. */
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if (class == PCI_CLASS_SYSTEM_PIC) {
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res = &dev->resource[0];
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if (res[0].start || res[1].start || res[2].start ||
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res[3].start || res[4].start || res[5].start)
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continue;
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}
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pdev_sort_resources(dev, &head);
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}
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