From 7236370409d0c0921976b2f768c37fd12940788c Mon Sep 17 00:00:00 2001
From: Ilia <illia.sheremet@gmail.com>
Date: Sun, 27 Dec 2015 14:38:00 +0000
Subject: [PATCH] checkHWFilters arg by reference. loopback checked first

---
 libuavcan_drivers/linux/include/uavcan_linux/socketcan.hpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/libuavcan_drivers/linux/include/uavcan_linux/socketcan.hpp b/libuavcan_drivers/linux/include/uavcan_linux/socketcan.hpp
index 14383b3497..aae50675d7 100644
--- a/libuavcan_drivers/linux/include/uavcan_linux/socketcan.hpp
+++ b/libuavcan_drivers/linux/include/uavcan_linux/socketcan.hpp
@@ -232,7 +232,7 @@ class SocketCanIface : public uavcan::ICanIface
          */
         loopback = (msg.msg_flags & static_cast<int>(MSG_CONFIRM)) != 0;
 
-        if (!checkHWFilters(sockcan_frame) && !loopback)
+        if (!loopback && !checkHWFilters(sockcan_frame))
         {
             return 0;
         }
@@ -326,7 +326,7 @@ class SocketCanIface : public uavcan::ICanIface
     /**
      * Returns true if a frame accepted by HW filters
      */
-    bool checkHWFilters(const ::can_frame frame) const
+    bool checkHWFilters(const ::can_frame& frame) const
     {
         if (!hw_filters_container_.empty())
         {