Check usb_get_port_path() return value

[libsigrok.git] / src / device.c

diff --git a/src/device.c b/src/device.c
index 6fcad410f2bc3802f979f7bb2f9687b755861940..519a1726399b060719df6c43f2432900266e3273 100644 (file)
--- a/src/device.c
+++ b/src/device.c
@@ -753,7 +753,9 @@ SR_API const char *sr_dev_inst_connid_get(const struct sr_dev_inst *sdi)
                        if (b != usb->bus || a != usb->address)
                                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;
+
                        ((struct sr_dev_inst *)sdi)->connection_id = g_strdup(connection_id);
                        break;
                }