diff options
Diffstat (limited to 'drivers/tty/n_gsm.c')
| -rw-r--r-- | drivers/tty/n_gsm.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/tty/n_gsm.c b/drivers/tty/n_gsm.c index 1f3aba607cd5..0ee7531c9201 100644 --- a/drivers/tty/n_gsm.c +++ b/drivers/tty/n_gsm.c @@ -4108,6 +4108,8 @@ static int gsm_modem_upd_via_msc(struct gsm_dlci *dlci, u8 brk) static int gsm_modem_update(struct gsm_dlci *dlci, u8 brk) { + if (dlci->gsm->dead) + return -EL2HLT; if (dlci->adaption == 2) { /* Send convergence layer type 2 empty data frame. */ gsm_modem_upd_via_data(dlci, brk); |