osmo-trx -m is broken

Hi.

I've got following error in latest osmo-trx:

./Transceiver52M/osmo-trx -x -c 2 -m

-- Performing timer loopback test... pass -- Performing timer loopback test... pass -- Setting master clock rate selection to 'automatic'. ALERT 139666585152384 10:32:48.8 UHDDevice.cpp:642:open: Channel setting failed - map::at ALERT 139666585152384 10:32:48.8 UHDDevice.cpp:642:open: Channel setting failed - map::at ALERT 139666585152384 10:32:48.8 osmo-trx.cpp:454:main: Failed to create radio device

ALERT 139666585152384 10:32:48.8 osmo-trx.cpp:454:main: Failed to create radio device Shutting down transceiver...

If I remove -m than it starts as expected.