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tracing: trace_output.c, fix false positive compiler warning

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This compiler warning:

  CC      kernel/trace/trace_output.o
 kernel/trace/trace_output.c: In function ‘register_ftrace_event’:
 kernel/trace/trace_output.c:544: warning: ‘list’ may be used uninitialized in this function

Is wrong as 'list' is always initialized - but GCC (4.3.2) does not
recognize this relationship properly.

Work around the warning by initializing the variable to NULL.

[ Impact: fix false positive compiler warning ]

Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Acked-by: Steven Rostedt <rostedt@goodmis.org>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Jaswinder Singh Rajput 2009-05-06 15:45:45 +05:30 committed by Ingo Molnar
parent 22a7c31a96
commit 48dd0fed90
1 changed files with 1 additions and 1 deletions
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2
kernel/trace/trace_output.c
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@ -541,7 +541,7 @@ int register_ftrace_event(struct trace_event *event)
INIT_LIST_HEAD(&event->list);
if (!event->type) {
struct list_head *list;
struct list_head *list = NULL;
if (next_event_type > FTRACE_MAX_EVENT) {