From: Cedric Jehasse <cedric.jehasse(a)softathome.com&gt; cdc_wdm device doesn't have ID_VENDOR_ID and ID_MODEL_ID properties, read these properties from the parent usb_device. --- plugins/udevng.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/plugins/udevng.c b/plugins/udevng.c index afb02ca..7d7f4f6 100644 --- a/plugins/udevng.c +++ b/plugins/udevng.c @@ -1035,8 +1035,10 @@ static void check_usb_device(struct udev_device *device) } } - vid = udev_device_get_property_value(device, "ID_VENDOR_ID"); - pid = udev_device_get_property_value(device, "ID_MODEL_ID"); + vid = udev_device_get_property_value(usb_device, + "ID_VENDOR_ID"); + pid = udev_device_get_property_value(usb_device, + "ID_MODEL_ID"); DBG("%s [%s:%s]", drv, vid, pid); -- 1.7.9.5