USB -n 'known' text only without ---usb-list-all
diff --git a/usbutils.c b/usbutils.c
index 4d14159..151d3cd 100644
--- a/usbutils.c
+++ b/usbutils.c
@@ -609,7 +609,8 @@ void usb_all(int level)
if (j == -1)
applog(LOG_WARNING, "No known USB devices");
else
- applog(LOG_WARNING, "%d known USB devices", (int)(++j));
+ applog(LOG_WARNING, "%d %sUSB devices",
+ (int)(++j), opt_usb_list_all ? BLANK : "known ");
}