[PATCH] Avoid AdapterDisable bugcheck on a disabled Adapter

[Owen Smith <owen.smith@xxxxxxxxx>]

MiniportShutdownEx maybe called when the miniport is in any state, including
the Paused state after MiniportPause. Both MiniportPause and MiniportShutdownEx
call AdapterDisable. The first call will unregister the suspend callback, and
the second call will bugcheck, as the SuspendCallbackLate handle is now NULL.

Signed-off-by: Owen Smith <owen.smith@xxxxxxxxx>
---
 src/xennet/adapter.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/xennet/adapter.c b/src/xennet/adapter.c
index 67ced3e..cbca7f0 100644
--- a/src/xennet/adapter.c
+++ b/src/xennet/adapter.c
@@ -1964,7 +1964,8 @@ AdapterDisable(
     IN  PXENNET_ADAPTER     Adapter
     )
 {
-    ASSERT(Adapter->Enabled);
+    if (!Adapter->Enabled)
+        return;
     Adapter->Enabled = FALSE;
 
     ReceiverDisable(Adapter->Receiver);
-- 
2.50.1.windows.1