1 files changed, 4 insertions, 1 deletions

diff --git a/drivers/isdn/i4l/isdn_tty.c b/drivers/isdn/i4l/isdn_tty.c
index aeaa1db74bd8..3585fb1f3344 100644
--- a/drivers/isdn/i4l/isdn_tty.c
+++ b/drivers/isdn/i4l/isdn_tty.c
@@ -2345,12 +2345,15 @@ isdn_tty_at_cout(char *msg, modem_info * info)
         u_long flags;
         struct sk_buff *skb = NULL;
         char *sp = NULL;
-        int l = strlen(msg);
+        int l;
 
         if (!msg) {
                 printk(KERN_WARNING "isdn_tty: Null-Message in isdn_tty_at_cout\n");
                 return;
         }
+
+        l = strlen(msg);
+
         spin_lock_irqsave(&info->readlock, flags);
         tty = info->tty;
         if ((info->flags & ISDN_ASYNC_CLOSING) || (!tty)) {