mpmd: Skip find if "resource" key is specified

MPM devices were being discovered when trying to locate PCIe connected
devices.  Adding filter to exclude them if the "resource" key is
specified in the device address arguments.

Replaces "lib: disable non pcie types in find with resource" to reduce
impact to older devices and remove API change.

Signed-off-by: michael-west <michael.west@ettus.com>

1 files changed, 2 insertions, 4 deletions

diff --git a/host/lib/usrp/x300/x300_impl.cpp b/host/lib/usrp/x300/x300_impl.cpp
index 663b951a1..fa8425fac 100644
--- a/host/lib/usrp/x300/x300_impl.cpp
+++ b/host/lib/usrp/x300/x300_impl.cpp
@@ -100,9 +100,7 @@ device_addrs_t x300_find(const device_addr_t& hint_)
         return reply_addrs;
     }
 
-    bool has_resource_key = hint.has_key_with_prefix("resource");
-
-    if (!has_resource_key) {
+    if (!hint.has_key("resource")) {
         // otherwise, no address was specified, send a broadcast on each interface
         for (const transport::if_addrs_t& if_addrs : transport::get_if_addrs()) {
             // avoid the loopback device
@@ -137,7 +135,7 @@ device_addrs_t x300_find(const device_addr_t& hint_)
         }
     }
 
-    device_addrs_t pcie_addrs = pcie_manager::find(hint, has_resource_key);
+    device_addrs_t pcie_addrs = pcie_manager::find(hint, hint.has_key("resource"));
     if (not pcie_addrs.empty()) {
         addrs.insert(addrs.end(), pcie_addrs.begin(), pcie_addrs.end());
     }