diff options
Diffstat (limited to 'hw/xen/xen-bus.c')
| -rw-r--r-- | hw/xen/xen-bus.c | 23 |
1 files changed, 20 insertions, 3 deletions
diff --git a/hw/xen/xen-bus.c b/hw/xen/xen-bus.c index 49a725e..0a1033d 100644 --- a/hw/xen/xen-bus.c +++ b/hw/xen/xen-bus.c @@ -515,6 +515,23 @@ static void xen_device_backend_set_online(XenDevice *xendev, bool online) xen_device_backend_printf(xendev, "online", "%u", online); } +/* + * Tell from the state whether the frontend is likely alive, + * i.e. it will react to a change of state of the backend. + */ +static bool xen_device_state_is_active(enum xenbus_state state) +{ + switch (state) { + case XenbusStateInitWait: + case XenbusStateInitialised: + case XenbusStateConnected: + case XenbusStateClosing: + return true; + default: + return false; + } +} + static void xen_device_backend_changed(void *opaque) { XenDevice *xendev = opaque; @@ -538,11 +555,11 @@ static void xen_device_backend_changed(void *opaque) /* * If the toolstack (or unplug request callback) has set the backend - * state to Closing, but there is no active frontend (i.e. the - * state is not Connected) then set the backend state to Closed. + * state to Closing, but there is no active frontend then set the + * backend state to Closed. */ if (xendev->backend_state == XenbusStateClosing && - xendev->frontend_state != XenbusStateConnected) { + !xen_device_state_is_active(state)) { xen_device_backend_set_state(xendev, XenbusStateClosed); } |