Check usb_get_port_path() return value

[libsigrok.git] / src / hardware / dreamsourcelab-dslogic / protocol.c

diff --git a/src/hardware/dreamsourcelab-dslogic/protocol.c b/src/hardware/dreamsourcelab-dslogic/protocol.c
index 2096073c1000c3c866d35133995d4d10498f89f2..0f171518125c5aa320ba0791de3a875df182f8d9 100644 (file)
--- a/src/hardware/dreamsourcelab-dslogic/protocol.c
+++ b/src/hardware/dreamsourcelab-dslogic/protocol.c
@@ -568,7 +568,9 @@ SR_PRIV int dslogic_dev_open(struct sr_dev_inst *sdi, struct sr_dev_driver *di)
                if ((sdi->status == SR_ST_INITIALIZING) ||
                                (sdi->status == SR_ST_INACTIVE)) {
                        /* 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;