X-Git-Url: https://sigrok.org/gitweb/?a=blobdiff_plain;f=src%2Fhardware%2Ftesto%2Fapi.c;h=43a5f2513f67ca4822356fa00e74e5b52fd5e150;hb=f6ce25ec05e8707ee3783b111ea13779f237c3b3;hp=90fb65ca4bed4a11f0c3296d766ca57a4f3947c2;hpb=95c1fe62f77d347bf173b1236c38a9043efabd2b;p=libsigrok.git

diff --git a/src/hardware/testo/api.c b/src/hardware/testo/api.c
index 90fb65ca..43a5f251 100644
--- a/src/hardware/testo/api.c
+++ b/src/hardware/testo/api.c
@@ -109,7 +109,8 @@ static GSList *scan(struct sr_dev_driver *di, GSList *options)
 		if (strncmp(manufacturer, "testo", 5))
 			continue;
 
-		usb_get_port_path(devlist[i], connection_id, sizeof(connection_id));
+		if (usb_get_port_path(devlist[i], connection_id, sizeof(connection_id)) < 0)
+			continue;
 
 		/* Hardcode the 435 for now. */
 		if (strcmp(product, "testo 435/635/735"))