From: Dan Carpenter <error27@gmail.com>
Date: Sat, 20 Mar 2010 14:39:11 +0000 (+0300)
Subject: perf: Fix check at end of event search
X-Git-Tag: v2.6.35-rc1~522^2~70
X-Git-Url: https://openfabrics.org/gitweb/?a=commitdiff_plain;h=d9f599e1e6d019968b35d2dc63074b9e8964fa69;p=~shefty%2Frdma-dev.git

perf: Fix check at end of event search

The original code doesn't work because "call" is never NULL there.

Signed-off-by: Dan Carpenter <error27@gmail.com>
LKML-Reference: <20100320143911.GF5331@bicker>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
---

diff --git a/kernel/trace/trace_events_filter.c b/kernel/trace/trace_events_filter.c
index 88c0b6dbd7f..58092d844a1 100644
--- a/kernel/trace/trace_events_filter.c
+++ b/kernel/trace/trace_events_filter.c
@@ -1398,7 +1398,7 @@ int ftrace_profile_set_filter(struct perf_event *event, int event_id,
 	}
 
 	err = -EINVAL;
-	if (!call)
+	if (&call->list == &ftrace_events)
 		goto out_unlock;
 
 	err = -EEXIST;