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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
Download patch file Download diff file Expand all files Collapse all files

12
hw/i386/xen/xen_platform.c
View file

@ -186,11 +186,11 @@ static void platform_fixed_ioport_writew(void *opaque, uint32_t addr, uint32_t v
if (val & (UNPLUG_IDE_SCSI_DISKS | UNPLUG_AUX_IDE_DISKS |
UNPLUG_NVME_DISKS)) {
DPRINTF("unplug disks\n");
pci_unplug_disks(pci_dev->bus, val);
pci_unplug_disks(pci_get_bus(pci_dev), val);
}
if (val & UNPLUG_ALL_NICS) {
DPRINTF("unplug nics\n");
pci_unplug_nics(pci_dev->bus);
pci_unplug_nics(pci_get_bus(pci_dev));
}
break;
}
@ -372,17 +372,17 @@ static void xen_platform_ioport_writeb(void *opaque, hwaddr addr,
* If VMDP was to control both disk and LAN it would use 4.
* If it controlled just disk or just LAN, it would use 8 below.
*/
pci_unplug_disks(pci_dev->bus, UNPLUG_IDE_SCSI_DISKS);
pci_unplug_nics(pci_dev->bus);
pci_unplug_disks(pci_get_bus(pci_dev), UNPLUG_IDE_SCSI_DISKS);
pci_unplug_nics(pci_get_bus(pci_dev));
}
break;
case 8:
switch (val) {
case 1:
pci_unplug_disks(pci_dev->bus, UNPLUG_IDE_SCSI_DISKS);
pci_unplug_disks(pci_get_bus(pci_dev), UNPLUG_IDE_SCSI_DISKS);
break;
case 2:
pci_unplug_nics(pci_dev->bus);
pci_unplug_nics(pci_get_bus(pci_dev));
break;
default:
log_writeb(s, (uint32_t)val);