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Commit 23186279 authored by Satoru Takeuchi's avatar Satoru Takeuchi Committed by Greg Kroah-Hartman
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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: default avatarKenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: default avatarMUNEDA Takahiro <muneda.takahiro@jp.fujitsu.com>
Signed-off-by: default avatarSatoru Takeuchi <takeuchi_satoru@jp.fujitsu.com>
Signed-off-by: default avatarKristen Carlson Accardi <kristen.c.accardi@intel.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent d5cdb672

drivers/pci/setup-bus.c

+10 −3
Original line number Diff line number Diff line
@@ -55,12 +55,19 @@ pbus_assign_resources_sorted(struct pci_bus *bus) 
	list_for_each_entry(dev, &bus->devices, bus_list) {

		u16 class = dev->class >> 8;



		/* Don't touch classless devices or host bridges or ioapics.  */

		/* Don't touch classless devices or host bridges. */

		if (class == PCI_CLASS_NOT_DEFINED ||

		    class == PCI_CLASS_BRIDGE_HOST ||

		    class == PCI_CLASS_SYSTEM_PIC)

		    class == PCI_CLASS_BRIDGE_HOST)

			continue;



		/* Don't touch ioapics if it has the assigned resources. */

		if (class == PCI_CLASS_SYSTEM_PIC) {

			res = &dev->resource[0];

			if (res[0].start || res[1].start || res[2].start ||

			    res[3].start || res[4].start || res[5].start)

				continue;

		}



		pdev_sort_resources(dev, &head);

	}