diff options
Diffstat (limited to 'src/libmsc/gsm_04_08_cc.c')
| -rw-r--r-- | src/libmsc/gsm_04_08_cc.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/src/libmsc/gsm_04_08_cc.c b/src/libmsc/gsm_04_08_cc.c index f974e901e..52178614a 100644 --- a/src/libmsc/gsm_04_08_cc.c +++ b/src/libmsc/gsm_04_08_cc.c @@ -1074,8 +1074,16 @@ static int gsm48_cc_rx_release(struct gsm_trans *trans, struct msgb *msg) static int gsm48_cc_tx_release(struct gsm_trans *trans, void *arg) { struct gsm_mncc *rel = arg; - struct msgb *msg = gsm48_msgb_alloc_name("GSM 04.08 CC REL"); - struct gsm48_hdr *gh = (struct gsm48_hdr *) msgb_put(msg, sizeof(*gh)); + struct msgb *msg; + struct gsm48_hdr *gh; + + if (!trans->msc_a) { + LOG_TRANS(trans, LOGL_DEBUG, "Cannot send CC REL, there is no MSC-A connection\n"); + return -EINVAL; + } + + msg = gsm48_msgb_alloc_name("GSM 04.08 CC REL"); + gh = (struct gsm48_hdr *) msgb_put(msg, sizeof(*gh)); gh->msg_type = GSM48_MT_CC_RELEASE; |