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-rw-r--r--host/lib/usrp/usrp1/usrp1_impl.cpp2
1 files changed, 2 insertions, 0 deletions
diff --git a/host/lib/usrp/usrp1/usrp1_impl.cpp b/host/lib/usrp/usrp1/usrp1_impl.cpp
index 1db2efa0d..30986ac66 100644
--- a/host/lib/usrp/usrp1/usrp1_impl.cpp
+++ b/host/lib/usrp/usrp1/usrp1_impl.cpp
@@ -279,8 +279,10 @@ usrp1_impl::usrp1_impl(const device_addr_t &device_addr){
// create frontend control objects
////////////////////////////////////////////////////////////////////
_tree->create<subdev_spec_t>(mb_path / "rx_subdev_spec")
+ .set(subdev_spec_t())
.subscribe(boost::bind(&usrp1_impl::update_rx_subdev_spec, this, _1));
_tree->create<subdev_spec_t>(mb_path / "tx_subdev_spec")
+ .set(subdev_spec_t())
.subscribe(boost::bind(&usrp1_impl::update_tx_subdev_spec, this, _1));
BOOST_FOREACH(const std::string &db, _dbc.keys()){