linux-kernel - [PATCH] kernel/trace: fix compiler warning

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Date:	Tue, 11 Feb 2014 23:41:41 +0800
From:	Qiaowei Ren <qiaowei.ren@...el.com>
To:	Steven Rostedt <rostedt@...dmis.org>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Ingo Molnar <mingo@...hat.com>
Cc:	linux-kernel@...r.kernel.org, Qiaowei Ren <qiaowei.ren@...el.com>
Subject: [PATCH] kernel/trace: fix compiler warning

The patch fixes the following compiler warning:
    CC      kernel/trace/trace_events.o
  kernel/trace/trace_events.c: In function 'event_enable_read'
  kernel/trace/trace_events.c:693: warning: 'flags' may be used \
  uninitialized in this function

Signed-off-by: Qiaowei Ren <qiaowei.ren@...el.com>
---
 kernel/trace/trace_events.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/kernel/trace/trace_events.c b/kernel/trace/trace_events.c
index e71ffd4..b7915f2 100644
--- a/kernel/trace/trace_events.c
+++ b/kernel/trace/trace_events.c
@@ -690,7 +690,7 @@ event_enable_read(struct file *filp, char __user *ubuf, size_t cnt,
 		  loff_t *ppos)
 {
 	struct ftrace_event_file *file;
-	unsigned long flags;
+	unsigned long flags = 0;
 	char buf[4] = "0";
 
 	mutex_lock(&event_mutex);
-- 
1.7.1

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