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pci: Eliminate redundant PCIDevice::bus pointer

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The bus pointer in PCIDevice is basically redundant with QOM information.
It's always initialized to the qdev_get_parent_bus(), the only difference
is the type.

Therefore this patch eliminates the field, instead creating a pci_get_bus()
helper to do the type mangling to derive it conveniently from the QOM
Device object underneath.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Marcel Apfelbaum <marcel@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
This commit is contained in:
David Gibson 2017-11-29 19:46:27 +11:00 • committed by Michael S. Tsirkin
parent cdc57472dc
commit fd56e0612b
20 changed files with 102 additions and 92 deletions
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2
hw/pci-host/versatile.c
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@ -311,7 +311,7 @@ static const MemoryRegionOps pci_vpb_config_ops = {
static int pci_vpb_map_irq(PCIDevice *d, int irq_num)
{
PCIVPBState *s = container_of(d->bus, PCIVPBState, pci_bus);
PCIVPBState *s = container_of(pci_get_bus(d), PCIVPBState, pci_bus);
if (s->irq_mapping == PCI_VPB_IRQMAP_BROKEN) {
/* Legacy broken IRQ mapping for compatibility with old and