[PATCH 4/5] xen/pciback: Expand the warning message to include domain id.

[Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>]

When a PCI device is transferred to another domain and it is still
in usage (from the internal perspective), mention which other
domain is using it to aid in debugging.

Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
---
 drivers/xen/xen-pciback/xenbus.c |    6 ++++--
 1 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/xen/xen-pciback/xenbus.c b/drivers/xen/xen-pciback/xenbus.c
index 474d52e..fa130bd 100644
--- a/drivers/xen/xen-pciback/xenbus.c
+++ b/drivers/xen/xen-pciback/xenbus.c
@@ -243,8 +243,10 @@ static int xen_pcibk_export_device(struct xen_pcibk_device *pdev,
 	dev_dbg(&dev->dev, "registering for %d\n", pdev->xdev->otherend_id);
 	if (xen_register_device_domain_owner(dev,
 					     pdev->xdev->otherend_id) != 0) {
-		dev_err(&dev->dev, "device has been assigned to another " \
-			"domain! Over-writting the ownership, but beware.\n");
+		int other_domain = xen_find_device_domain_owner(dev);
+		dev_err(&dev->dev, "device has been assigned to %d " \
+			"domain! Over-writting the ownership, but beware.\n",
+			other_domain);
 		xen_unregister_device_domain_owner(dev);
 		xen_register_device_domain_owner(dev, pdev->xdev->otherend_id);
 	}
-- 
1.7.7.4