xen-pcifront: Handle backend CLOSED without CLOSING

[cascardo/linux.git] / drivers / pci / xen-pcifront.c

diff --git a/drivers/pci/xen-pcifront.c b/drivers/pci/xen-pcifront.c
index 0aab85a..a0c7312 100644 (file)
--- a/drivers/pci/xen-pcifront.c
+++ b/drivers/pci/xen-pcifront.c
@@ -1068,13 +1068,16 @@ static void __init_refok pcifront_backend_changed(struct xenbus_device *xdev,
        case XenbusStateInitialising:
        case XenbusStateInitWait:
        case XenbusStateInitialised:
-       case XenbusStateClosed:
                break;
 
        case XenbusStateConnected:
                pcifront_try_connect(pdev);
                break;
 
+       case XenbusStateClosed:
+               if (xdev->state == XenbusStateClosed)
+                       break;
+               /* Missed the backend's CLOSING state -- fallthrough */
        case XenbusStateClosing:
                dev_warn(&xdev->dev, "backend going away!\n");
                pcifront_try_disconnect(pdev);