X-Git-Url: https://sigrok.org/gitweb/?p=libsigrok.git;a=blobdiff_plain;f=src%2Fdevice.c;h=6eff16d16573e45c78f0e836a168ff72ff15d31f;hp=aa499c8d74252ad07a37cf54afbec3b1233196ce;hb=093e1cba6b7bf14cfb77fa36f59b0c16e6fca7cc;hpb=89ab9fc39c015d541b2fdd4d9d2fb5e00f63be8a

diff --git a/src/device.c b/src/device.c
index aa499c8d..6eff16d1 100644
--- a/src/device.c
+++ b/src/device.c
@@ -581,6 +581,14 @@ SR_API int sr_dev_close(struct sr_dev_inst *sdi)
 	if (!sdi || !sdi->driver || !sdi->driver->dev_close)
 		return SR_ERR;
 
+	if (sdi->status != SR_ST_ACTIVE) {
+		sr_err("%s: Device instance not active, can't close.",
+			sdi->driver->name);
+		return SR_ERR_DEV_CLOSED;
+	}
+
+	sr_dbg("%s: Closing device.", sdi->driver->name)
+
 	ret = sdi->driver->dev_close(sdi);
 
 	return ret;