diff --git a/include/lib/el3_runtime/cpu_data.h b/include/lib/el3_runtime/cpu_data.h
index 3f48de5..15d34eb 100644
--- a/include/lib/el3_runtime/cpu_data.h
+++ b/include/lib/el3_runtime/cpu_data.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2014-2017, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2014-2018, ARM Limited and Contributors. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -102,6 +102,8 @@
 #endif
 } __aligned(CACHE_WRITEBACK_GRANULE) cpu_data_t;
 
+extern cpu_data_t percpu_data[PLATFORM_CORE_COUNT];
+
 #if CRASH_REPORTING
 /* verify assembler offsets match data structures */
 CASSERT(CPU_DATA_CRASH_BUF_OFFSET == __builtin_offsetof
diff --git a/include/lib/el3_runtime/pubsub.h b/include/lib/el3_runtime/pubsub.h
index 9a85480..2c8a196 100644
--- a/include/lib/el3_runtime/pubsub.h
+++ b/include/lib/el3_runtime/pubsub.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2017-2018, ARM Limited and Contributors. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -49,9 +49,12 @@
  * Have the function func called back when the specified event happens. This
  * macro places the function address into the pubsub section, which is picked up
  * and invoked by the invoke_pubsubs() function via. the PUBLISH_EVENT* macros.
+ *
+ * The extern declaration is there to satisfy MISRA C-2012 rule 8.4.
  */
 #define SUBSCRIBE_TO_EVENT(event, func) \
-	pubsub_cb_t __cb_func_##func##event __pubsub_section(event) = func
+	extern pubsub_cb_t __cb_func_##func##event __pubsub_section(event); \
+	pubsub_cb_t __cb_func_##func##event __pubsub_section(event) = (func)
 
 /*
  * Iterate over subscribed handlers for a defined event. 'event' is the name of