X-Git-Url: https://sigrok.org/gitweb/?a=blobdiff_plain;f=src%2Fhardware%2Fhantek-6xxx%2Fprotocol.c;h=75d8ab91c0f14fb4c2cfed4ce2222173e53f4660;hb=8c8fff477310550170f5441e24d87673c472f624;hp=8e406ffe03f04db5220cfccc18653ac10b72d024;hpb=7e463623382e1f574fde150b3fc88a65eaebb578;p=libsigrok.git

diff --git a/src/hardware/hantek-6xxx/protocol.c b/src/hardware/hantek-6xxx/protocol.c
index 8e406ffe..75d8ab91 100644
--- a/src/hardware/hantek-6xxx/protocol.c
+++ b/src/hardware/hantek-6xxx/protocol.c
@@ -46,7 +46,9 @@ SR_PRIV int hantek_6xxx_open(struct sr_dev_inst *sdi)
 			/*
 			 * Check device by its physical USB bus/port address.
 			 */
-			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;
+
 			if (strcmp(sdi->connection_id, connection_id))
 				/* This is not the one. */
 				continue;