unit: shortcut unit_notify() early, if possible

1 files changed, 3 insertions, 0 deletions

diff --git a/device.c b/device.c
index 25661e05f8..d99038f77e 100644
--- a/device.c
+++ b/device.c
@@ -49,6 +49,9 @@ static void device_set_state(Device *d, DeviceState state) {
         DeviceState old_state;
         assert(d);
 
+        if (state == d->state)
+                return;
+
         old_state = d->state;
         d->state = state;