greybus: core: disable bundle connections on hot-unplug

Disable bundle connections in core before calling driver disconnect in
case the interface is already gone.

This avoids unnecessary timeouts on hot-unplug when a driver does I/O in
its disconnect callback.
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>

drivers/staging/greybus/core.c

@@ -161,8 +161,12 @@ static int greybus_remove(struct device *dev)
 	struct gb_bundle *bundle = to_gb_bundle(dev);
 	struct gb_connection *connection;
 
-	list_for_each_entry(connection, &bundle->connections, bundle_links)
-		gb_connection_disable_rx(connection);
+	list_for_each_entry(connection, &bundle->connections, bundle_links) {
+		if (bundle->intf->disconnected)
+			gb_connection_disable(connection);
+		else
+			gb_connection_disable_rx(connection);
+	}
 
 	driver->disconnect(bundle);