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pci: Simplify pci_bus_is_root()

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pci_bus_is_root() currently relies on a method in the PCIBusClass.
But it's always known if a PCI bus is a root bus when we create it, so
using a dynamic method is overkill.

This replaces it with an IS_ROOT bit in a new flags field, which is set on
root buses and otherwise clear.  As a bonus this removes the special
is_root logic from pci_expander_bridge, since it already creates its bus
as a root bus.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Marcel Apfelbaum <marcel@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Greg Kurz <groug@kaod.org>
Message-Id: <20190424041959.4087-3-david@gibson.dropbear.id.au>
This commit is contained in:
David Gibson 2019-04-24 14:19:58 +10:00 • committed by Michael S. Tsirkin
parent c76efd7225
commit b0e5196a52
5 changed files with 14 additions and 20 deletions
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6
hw/pci-bridge/pci_expander_bridge.c
View file

@ -66,11 +66,6 @@ static int pxb_bus_num(PCIBus *bus)
return pxb->bus_nr;
}
static bool pxb_is_root(PCIBus *bus)
{
return true; /* by definition */
}
static uint16_t pxb_bus_numa_node(PCIBus *bus)
{
PXBDev *pxb = convert_to_pxb(bus->parent_dev);
@ -83,7 +78,6 @@ static void pxb_bus_class_init(ObjectClass *class, void *data)
PCIBusClass *pbc = PCI_BUS_CLASS(class);
pbc->bus_num = pxb_bus_num;
pbc->is_root = pxb_is_root;
pbc->numa_node = pxb_bus_numa_node;
}