Message ID | 1465482820-20150-1-git-send-email-kamal@canonical.com |
---|---|
State | New |
Headers | show |
diff --git a/drivers/tty/n_gsm.c b/drivers/tty/n_gsm.c index 382d3fc..25444a1 100644 --- a/drivers/tty/n_gsm.c +++ b/drivers/tty/n_gsm.c @@ -2045,7 +2045,9 @@ static void gsm_cleanup_mux(struct gsm_mux *gsm) } } spin_unlock(&gsm_mux_lock); - WARN_ON(i == MAX_MUX); + /* open failed before registering => nothing to do */ + if (i == MAX_MUX) + return; /* In theory disconnecting DLCI 0 is sufficient but for some modems this is apparently not the case. */