diff options
| -rw-r--r-- | src/platformsupport/udev/qudevicehelper.cpp | 15 |
1 files changed, 10 insertions, 5 deletions
diff --git a/src/platformsupport/udev/qudevicehelper.cpp b/src/platformsupport/udev/qudevicehelper.cpp index 688cedd304..0cf370badc 100644 --- a/src/platformsupport/udev/qudevicehelper.cpp +++ b/src/platformsupport/udev/qudevicehelper.cpp @@ -192,13 +192,18 @@ void QUDeviceHelper::handleUDevNotification() subsystem = "drm"; else goto cleanup; - // does not increase the refcount - dev = udev_device_get_parent_with_subsystem_devtype(dev, subsystem, 0); - if (!dev) - goto cleanup; - types = checkDeviceType(dev); + // if we cannot determine a type, walk up the device tree + if (types == UDev_Unknown) { + // does not increase the refcount + dev = udev_device_get_parent_with_subsystem_devtype(dev, subsystem, 0); + if (!dev) + goto cleanup; + + types = checkDeviceType(dev); + } + if (types && (qstrcmp(action, "add") == 0)) emit deviceDetected(devNode, types); |