USB: cxacru: return an empty value for modulation if there is no connection
When there is no connection, return an empty string
instead of "0" for the connection modulation.
Signed-off-by: Simon Arlott <simon@fire.lp0.eu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/Documentation/networking/cxacru.txt b/Documentation/networking/cxacru.txt
index b074681..3532cee 100644
--- a/Documentation/networking/cxacru.txt
+++ b/Documentation/networking/cxacru.txt
@@ -61,6 +61,7 @@
* mac_address
* modulation
+ "" (when not connected)
"ANSI T1.413"
"ITU-T G.992.1 (G.DMT)"
"ITU-T G.992.2 (G.LITE)"