hotplug: Check for alias in net detach

https://bugzilla.redhat.com/show_bug.cgi?id=1141621

If the QEMU_CAPS_DEVICE is set, then ensure the host device alias has
been properly set before making the calls to detach the device

diff --git a/src/qemu/qemu_hotplug.c b/src/qemu/qemu_hotplug.c
index f79a37aeb75baeec9b5bae535dcf01fad4bd629d..33241fb75c8e9ad1366aad7ed0578eb4e67a0e9a 100644 (file)
--- a/src/qemu/qemu_hotplug.c
+++ b/src/qemu/qemu_hotplug.c
@@ -3530,6 +3530,12 @@ qemuDomainDetachNetDevice(virQEMUDriverPtr driver,
         }
     }
 
+    if (virQEMUCapsGet(priv->qemuCaps, QEMU_CAPS_DEVICE) &&
+        !detach->info.alias) {
+        if (qemuAssignDeviceNetAlias(vm->def, detach, -1) < 0)
+            goto cleanup;
+    }
+
     qemuDomainMarkDeviceForRemoval(vm, &detach->info);
 
     qemuDomainObjEnterMonitor(driver, vm);