diff options
Diffstat (limited to 'drivers/tty/n_gsm.c')
| -rw-r--r-- | drivers/tty/n_gsm.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/tty/n_gsm.c b/drivers/tty/n_gsm.c index b3550ff9c494..a3ab3946e4ad 100644 --- a/drivers/tty/n_gsm.c +++ b/drivers/tty/n_gsm.c @@ -2,6 +2,7 @@ /* * n_gsm.c GSM 0710 tty multiplexor * Copyright (c) 2009/10 Intel Corporation + * Copyright (c) 2022/23 Siemens Mobility GmbH * * * THIS IS A DEVELOPMENT SNAPSHOT IT IS NOT A FINAL RELEASE * * @@ -3097,10 +3098,8 @@ static void gsm_cleanup_mux(struct gsm_mux *gsm, bool disc) gsm->has_devices = false; } for (i = NUM_DLCI - 1; i >= 0; i--) - if (gsm->dlci[i]) { + if (gsm->dlci[i]) gsm_dlci_release(gsm->dlci[i]); - gsm->dlci[i] = NULL; - } mutex_unlock(&gsm->mutex); /* Now wipe the queues */ tty_ldisc_flush(gsm->tty); @@ -4110,6 +4109,8 @@ 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); |