2 files changed, 3 insertions, 2 deletions

diff --git a/Documentation/networking/cxacru.txt b/Documentation/networking/cxacru.txt
index b074681a963e..3532ceecd2c3 100644
--- a/Documentation/networking/cxacru.txt
+++ b/Documentation/networking/cxacru.txt
@@ -61,6 +61,7 @@ several sysfs attribute files for retrieving device statistics:
 * mac_address
 
 * modulation
+        "" (when not connected)
         "ANSI T1.413"
         "ITU-T G.992.1 (G.DMT)"
         "ITU-T G.992.2 (G.LITE)"
diff --git a/drivers/usb/atm/cxacru.c b/drivers/usb/atm/cxacru.c
index 56802d2e994b..4a26a6c93bec 100644
--- a/drivers/usb/atm/cxacru.c
+++ b/drivers/usb/atm/cxacru.c
@@ -267,12 +267,12 @@ static ssize_t cxacru_sysfs_showattr_LINE(u32 value, char *buf)
 static ssize_t cxacru_sysfs_showattr_MODU(u32 value, char *buf)
 {
         static char *str[] = {
-                        NULL,
+                        "",
                         "ANSI T1.413",
                         "ITU-T G.992.1 (G.DMT)",
                         "ITU-T G.992.2 (G.LITE)"
         };
-        if (unlikely(value >= ARRAY_SIZE(str) || str[value] == NULL))
+        if (unlikely(value >= ARRAY_SIZE(str)))
                 return snprintf(buf, PAGE_SIZE, "%u\n", value);
         return snprintf(buf, PAGE_SIZE, "%s\n", str[value]);
 }