greybus: interface: add comment about early control-connection disable

Add comment about why the control connection is disabled early when the
interface is already gone.
Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Reviewed-by: Jeffrey Carlyle <jcarlyle@google.com>
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>

drivers/staging/greybus/interface.c

@@ -147,6 +147,10 @@ void gb_interface_remove(struct gb_interface *intf)
 	struct gb_bundle *bundle;
 	struct gb_bundle *next;
 
+	/*
+	 * Disable the control-connection early to avoid operation timeouts
+	 * when the interface is already gone.
+	 */
 	if (intf->disconnected)
 		gb_control_disable(intf->control);