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pci: Unregister BARs before device exit 

BARs are registered in init functions from memory regions created
by the drivers.  Exit functions destroy those memory regions.
By unregistering the io regions after exit(), we're calling
memory_region_del_subregion on freed memory.  Don't do that.  The
option rom comes along for the ride because it's more symmetric
to how it's created.

Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Alex Williamson 2012-07-03 22:39:34 -06:00 committed by Michael S. Tsirkin
parent f90c2bcdbc
commit 7cf1b0fd95
1 changed files with 3 additions and 2 deletions
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5
hw/pci.c
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@ -838,12 +838,13 @@ static int pci_unregister_device(DeviceState *dev)
PCIDevice *pci_dev = PCI_DEVICE(dev);
PCIDeviceClass *pc = PCI_DEVICE_GET_CLASS(pci_dev);
pci_unregister_io_regions(pci_dev);
pci_del_option_rom(pci_dev);
if (pc->exit) {
pc->exit(pci_dev);
}
pci_unregister_io_regions(pci_dev);
pci_del_option_rom(pci_dev);
do_pci_unregister_device(pci_dev);
return 0;
}