RBS2000: Avoid segfault if ts->lapd instance doesn't exist
This happens e.g. with DAHDI driver, when the DAHDI device cannot be
opened. Let's not prematurely seg-fault early in the RBS2000 signal
handler, but take the proper error handlign for this.
Change-Id: I9223fb1568d3db7e278f07240c4be334c6602a13
diff --git a/openbsc/src/libbsc/bts_ericsson_rbs2000.c b/openbsc/src/libbsc/bts_ericsson_rbs2000.c
index 1300b4a..faf6f05 100644
--- a/openbsc/src/libbsc/bts_ericsson_rbs2000.c
+++ b/openbsc/src/libbsc/bts_ericsson_rbs2000.c
@@ -71,6 +71,8 @@
continue;
llist_for_each_entry(link, &ts->sign.sign_links, list) {
+ if (!ts->lapd)
+ continue;
lapd_instance_set_profile(ts->lapd,
&lapd_profile_abis_ericsson);