commit 6a74aa40907757ec98d8710ff66cd4cfe064e7d8
author Frederic Weisbecker <fweisbec@gmail.com> Wed Apr 22 00:41:09 2009 +0200
committer Ingo Molnar <mingo@elte.hu> Wed Apr 22 12:30:49 2009 +0200
tree 804f0043f9aa684dd00d4a0ef4f950c2da4d6550
parent 7e7ca9a22dbbc5c91763cd16923c7509918709b6

tracing/events: protect __get_str()

The __get_str() macro is used in a code part then its content should be
protected with parenthesis.

[ Impact: make macro definition more robust ]

Reported-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>

include/trace/ftrace.h

diff --git a/include/trace/ftrace.h b/include/trace/ftrace.h
index 5a7d18c..a77f71a 100644
--- a/include/trace/ftrace.h
+++ b/include/trace/ftrace.h
@@ -123,7 +123,7 @@
 #define TP_printk(fmt, args...) fmt "\n", args
 
 #undef __get_str
-#define __get_str(field)	(char *)__entry + __entry->__str_loc_##field
+#define __get_str(field)	((char *)__entry + __entry->__str_loc_##field)
 
 #undef TRACE_EVENT
 #define TRACE_EVENT(call, proto, args, tstruct, assign, print)		\