From: Ming Lei <tom.leiming@gmail.com>
Date: Mon, 18 May 2009 15:04:46 +0000 (+0800)
Subject: ftrace: fix check for return value of register_module_notifier in event_trace_init
X-Git-Tag: v2.6.31-rc1~401^2~34
X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=5537937696c55530447c20aa27daccb8d0d29b33;p=linux.git

ftrace: fix check for return value of register_module_notifier in event_trace_init

register_module_notifier() returns zero in the success case.
So fix the inverted fail case check in trace events modules
handler.

[ Impact: fix spurious warning on ftrace initialization]

Reported-by: Li Zefan <lizf@cn.fujitsu.com>
Signed-off-by: Ming Lei <tom.leiming@gmail.com>
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
---

diff --git a/kernel/trace/trace_events.c b/kernel/trace/trace_events.c
index 0eec0c55dd87..9e91c4ad7c8b 100644
--- a/kernel/trace/trace_events.c
+++ b/kernel/trace/trace_events.c
@@ -1174,7 +1174,7 @@ static __init int event_trace_init(void)
 	}
 
 	ret = register_module_notifier(&trace_module_nb);
-	if (!ret)
+	if (ret)
 		pr_warning("Failed to register trace events module notifier\n");
 
 	return 0;