Check usb_get_port_path() return value

[libsigrok.git] / src / hardware / saleae-logic16 / api.c

diff --git a/src/hardware/saleae-logic16/api.c b/src/hardware/saleae-logic16/api.c
index dedb9a244a2c637e59766125d2bfd801662314f2..ed9e1ecde9013a51d89e99c22af67f2b23c76d25 100644 (file)
--- a/src/hardware/saleae-logic16/api.c
+++ b/src/hardware/saleae-logic16/api.c
@@ -188,7 +188,8 @@ static GSList *scan(struct sr_dev_driver *di, GSList *options)
 
                libusb_get_device_descriptor(devlist[i], &des);
 
-               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 (des.idVendor != LOGIC16_VID || des.idProduct != LOGIC16_PID)
                        continue;
@@ -266,7 +267,9 @@ static int logic16_dev_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;