linux-kernel - [patch] tracing: checking for NULL instead of IS

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Message-ID: <20160423102347.GA11136@mwanda>
Date:	Sat, 23 Apr 2016 13:23:47 +0300
From:	Dan Carpenter <dan.carpenter@...cle.com>
To:	Steven Rostedt <rostedt@...dmis.org>,
	Tom Zanussi <tom.zanussi@...ux.intel.com>
Cc:	Ingo Molnar <mingo@...hat.com>, linux-kernel@...r.kernel.org,
	kernel-janitors@...r.kernel.org
Subject: [patch] tracing: checking for NULL instead of IS_ERR()

tracing_map_elt_alloc() returns ERR_PTRs on error, never NULL.

Fixes: 08d43a5fa063 ('tracing: Add lock-free tracing_map')
Signed-off-by: Dan Carpenter <dan.carpenter@...cle.com>

diff --git a/kernel/trace/tracing_map.c b/kernel/trace/tracing_map.c
index e0f1729..e7dfc5e 100644
--- a/kernel/trace/tracing_map.c
+++ b/kernel/trace/tracing_map.c
@@ -814,7 +814,7 @@ static struct tracing_map_elt *copy_elt(struct tracing_map_elt *elt)
 	unsigned int i;
 
 	dup_elt = tracing_map_elt_alloc(elt->map);
-	if (!dup_elt)
+	if (IS_ERR(dup_elt))
 		return NULL;
 
 	if (elt->map->ops && elt->map->ops->elt_copy)