X-Git-Url: https://sigrok.org/gitweb/?a=blobdiff_plain;f=src%2Fdevice.c;h=38ac003cf01d7433b9c1767ccf3ace01d70329db;hb=4bf93988023b2428129c8145ef9ea7121400f195;hp=ace11dd86204b178a63ef903b7006c889ddd8661;hpb=8662130615d7a59883c303914f94377032101cb9;p=libsigrok.git

diff --git a/src/device.c b/src/device.c
index ace11dd8..38ac003c 100644
--- a/src/device.c
+++ b/src/device.c
@@ -339,7 +339,7 @@ SR_API int sr_dev_inst_channel_add(struct sr_dev_inst *sdi, int index, int type,
 /**
  * Free device instance struct created by sr_dev_inst().
  *
- * @param sdi Device instance to free. Must not be NULL.
+ * @param sdi Device instance to free. If NULL, the function will do nothing.
  *
  * @private
  */
@@ -349,6 +349,9 @@ SR_PRIV void sr_dev_inst_free(struct sr_dev_inst *sdi)
 	struct sr_channel_group *cg;
 	GSList *l;
 
+	if (!sdi)
+		return;
+
 	for (l = sdi->channels; l; l = l->next) {
 		ch = l->data;
 		g_free(ch->name);