commit f92e44c5399d8914aad58bd2c74005b3640c5a9d
author Harald Welte <laforge@gnumonks.org> Mon Aug 01 00:24:19 2016 +0200
committer Harald Welte <laforge@gnumonks.org> Mon Aug 01 00:27:37 2016 +0200
tree 0add0cd58c448818b33a18a95e48fb53446038c7
parent 881dcaf7aa262e3c14c104e49e65cd2ee3bf93c3

lapd_core: Fix crash in lapd_dl_flush_hist()

When lapd_dl_flush_hist() was called before we actually had started a
transmit history from lapd_dl_init(), we woul segfault before this
patch.

Change-Id: Ifa677c9b335dd2884b4f3e44699d901957a0500b

src/gsm/lapd_core.c

diff --git a/src/gsm/lapd_core.c b/src/gsm/lapd_core.c
index fd1e709..fd163c8 100644
--- a/src/gsm/lapd_core.c
+++ b/src/gsm/lapd_core.c
@@ -158,7 +158,7 @@
 {
 	unsigned int i;
 
-	if (!dl->range_hist)
+	if (!dl->range_hist || !dl->tx_hist)
 		return;
 
 	for (i = 0; i < dl->range_hist; i++) {