From 405e0c8195113d63de9f432752667528d1a10fb1 Mon Sep 17 00:00:00 2001
From: Xavier Arteaga <xavier@softwareradiosystems.com>
Date: Thu, 25 Jun 2020 11:00:34 +0200
Subject: [PATCH] UHD: Check if tree exist before requesting access

---
 lib/src/phy/rf/rf_uhd_generic.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/lib/src/phy/rf/rf_uhd_generic.h b/lib/src/phy/rf/rf_uhd_generic.h
index cc3563378..080ee3117 100644
--- a/lib/src/phy/rf/rf_uhd_generic.h
+++ b/lib/src/phy/rf/rf_uhd_generic.h
@@ -47,6 +47,9 @@ public:
       return err;
     }
 
+    if (not usrp->get_device()->get_tree()->exists(TREE_DBOARD_RX_FRONTEND_NAME)) {
+      return err;
+    }
     std::string dboard_name = usrp->get_device()->get_tree()->access<std::string>(TREE_DBOARD_RX_FRONTEND_NAME).get();
 
     // Detect if it a AD9361 based device