diff options
Diffstat (limited to 'drivers/tty')
| -rw-r--r-- | drivers/tty/n_gsm.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/drivers/tty/n_gsm.c b/drivers/tty/n_gsm.c index 68f4e0de9f0d..b3550ff9c494 100644 --- a/drivers/tty/n_gsm.c +++ b/drivers/tty/n_gsm.c @@ -3399,6 +3399,7 @@ static void gsm_copy_config_ext_values(struct gsm_mux *gsm, static int gsm_config_ext(struct gsm_mux *gsm, struct gsm_config_ext *ce) { + bool need_restart = false; unsigned int i; /* @@ -3408,6 +3409,20 @@ static int gsm_config_ext(struct gsm_mux *gsm, struct gsm_config_ext *ce) for (i = 0; i < ARRAY_SIZE(ce->reserved); i++) if (ce->reserved[i]) return -EINVAL; + if (ce->flags & ~GSM_FL_RESTART) + return -EINVAL; + + /* Requires care */ + if (ce->flags & GSM_FL_RESTART) + need_restart = true; + + /* + * Close down what is needed, restart and initiate the new + * configuration. On the first time there is no DLCI[0] + * and closing or cleaning up is not necessary. + */ + if (need_restart) + gsm_cleanup_mux(gsm, true); /* * Setup the new configuration values @@ -3415,6 +3430,14 @@ static int gsm_config_ext(struct gsm_mux *gsm, struct gsm_config_ext *ce) gsm->wait_config = ce->wait_config ? true : false; gsm->keep_alive = ce->keep_alive; + if (gsm->dead) { + int ret = gsm_activate_mux(gsm); + if (ret) + return ret; + if (gsm->initiator) + gsm_dlci_begin_open(gsm->dlci[0]); + } + return 0; } |