xen/pciback: Fix "device has been assigned to X domain!" warning

The full warning is:
"pciback 0000:05:00.0: device has been assigned to 2 domain! Over-writting the ownership, but beware."

which is correct - the previous domain that was using the device
forgot to unregister the ownership. This patch fixes this by
calling the unregister ownership function when the PCI device is
relinquished from the guest domain.

Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>

diff --git a/drivers/xen/xen-pciback/pci_stub.c b/drivers/xen/xen-pciback/pci_stub.c
index 8f06e1ed028c9ab737ca61136754ae2c707d43e2..6d270306f3a0ca7ad8f360ca7e3e0a3227f4af17 100644 (file)
--- a/drivers/xen/xen-pciback/pci_stub.c
+++ b/drivers/xen/xen-pciback/pci_stub.c
@@ -234,6 +234,8 @@ void pcistub_put_pci_dev(struct pci_dev *dev)
        xen_pcibk_config_free_dyn_fields(found_psdev->dev);
        xen_pcibk_config_reset_dev(found_psdev->dev);
 
+       xen_unregister_device_domain_owner(found_psdev->dev);
+
        spin_lock_irqsave(&found_psdev->lock, flags);
        found_psdev->pdev = NULL;
        spin_unlock_irqrestore(&found_psdev->lock, flags);