[PATCH] Fix ASSERT in PdoUnplugRequest

[Owen Smith <owen.smith@xxxxxxxxx>]

PdoUnplugRequest can be called multiple times on the same Pdo if
the child device is restarted during child device installation.
Avoid ASSERT in checked build and prevent incorrect increment of the
unplug values.

Signed-off-by: Owen Smith <owen.smith@xxxxxxxxx>
---
 src/xenvif/pdo.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/xenvif/pdo.c b/src/xenvif/pdo.c
index 46b43a9..a3ae061 100644
--- a/src/xenvif/pdo.c
+++ b/src/xenvif/pdo.c
@@ -1234,7 +1234,11 @@ PdoUnplugRequest(
 {
     NTSTATUS        status;
 
-    ASSERT3U(Pdo->UnplugRequested, !=, Make);
+    // When a driver is restarted, PdoUnplugRequest is called again,
+    // dont increment the unplug count again.
+    if (Pdo->UnplugRequested == Make)
+        return;
+
     Pdo->UnplugRequested = Make;
 
     status = XENBUS_UNPLUG(Acquire, &Pdo->UnplugInterface);
-- 
2.44.0.windows.1