diff options
| -rw-r--r-- | drivers/isdn/i4l/isdn_tty.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/isdn/i4l/isdn_tty.c b/drivers/isdn/i4l/isdn_tty.c index aeaa1db74bd..3585fb1f334 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)) { |