From: Bert Vermeulen <redacted>
Date: Fri, 2 Nov 2012 23:41:21 +0000 (+0100)
Subject: don't assume the driver has been initialized when cleaning up.
X-Git-Url: https://sigrok.org/gitweb/?p=sigrok-util.git;a=commitdiff_plain;h=81fbb7e14292c332ba7e2e617c2c50a132189820

don't assume the driver has been initialized when cleaning up.

clear_instances() can get called on an unused driver.
---

diff --git a/source/drv-api.c b/source/drv-api.c
index 3d71daa..1288a7f 100644
--- a/source/drv-api.c
+++ b/source/drv-api.c
@@ -33,7 +33,9 @@ static int clear_instances(void)
 	struct dev_context *devc;
 	GSList *l;
 
-	drvc = di->priv;
+	if (!(drvc = di->priv))
+		return SR_OK;
+
 	for (l = drvc->instances; l; l = l->next) {
 		if (!(sdi = l->data))
 			continue;