X-Git-Url: https://sigrok.org/gitweb/?p=libsigrokdecode.git;a=blobdiff_plain;f=decoder.c;h=01dcf0a823b6da56a798d646750e355bfdd3de52;hp=5eac220a55c5b0a2942963700dce6700efa19f11;hb=269b442df38c1cfe825fd397612f8f79aea5541d;hpb=ca3fc3c0c042ecf509f8218e417655c04c9b9831

diff --git a/decoder.c b/decoder.c
index 5eac220..01dcf0a 100644
--- a/decoder.c
+++ b/decoder.c
@@ -42,6 +42,8 @@
 /* The list of protocol decoders. */
 SRD_PRIV GSList *pd_list = NULL;
 
+extern GSList *sessions;
+
 /* module_sigrokdecode.c */
 extern SRD_PRIV PyObject *mod_sigrokdecode;
 
@@ -250,6 +252,9 @@ SRD_API int srd_decoder_load(const char *module_name)
 	struct srd_probe *p;
 	GSList *l;
 
+	if (!module_name)
+		return SRD_ERR_ARG;
+
 	srd_dbg("Loading protocol decoder '%s'.", module_name);
 
 	py_basedec = py_method = py_attr = NULL;
@@ -461,6 +466,7 @@ static void free_probes(GSList *probelist)
 SRD_API int srd_decoder_unload(struct srd_decoder *dec)
 {
 	struct srd_decoder_option *o;
+	struct srd_session *sess;
 	GSList *l;
 
 	srd_dbg("Unloading protocol decoder '%s'.", dec->name);
@@ -471,7 +477,10 @@ SRD_API int srd_decoder_unload(struct srd_decoder *dec)
 	 * stack. A frontend reloading a decoder thus has to restart all
 	 * instances, and rebuild the stack.
 	 */
-	srd_inst_free_all(NULL);
+	for (l = sessions; l; l = l->next) {
+		sess = l->data;
+		srd_inst_free_all(sess, NULL);
+	}
 
 	for (l = dec->options; l; l = l->next) {
 		o = l->data;