linux-kernel - [PATCH 1/2] ftrace: remove an unneeded NULL check

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Message-ID: <20170712073340.4enzeojeoupuds5a@mwanda>
Date:   Wed, 12 Jul 2017 10:33:40 +0300
From:   Dan Carpenter <dan.carpenter@...cle.com>
To:     Steven Rostedt <rostedt@...dmis.org>
Cc:     Ingo Molnar <mingo@...hat.com>, linux-kernel@...r.kernel.org,
        kernel-janitors@...r.kernel.org
Subject: [PATCH 1/2] ftrace: remove an unneeded NULL check

"func" can't be NULL and it doesn't make sense to check because we've
already derefenced it.

Signed-off-by: Dan Carpenter <dan.carpenter@...cle.com>

diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c
index 2953d558bbee..2a3c45743f54 100644
--- a/kernel/trace/ftrace.c
+++ b/kernel/trace/ftrace.c
@@ -3950,7 +3950,7 @@ static int cache_mod(struct trace_array *tr,
 				continue;
 
 			/* no func matches all */
-			if (!func || strcmp(func, "*") == 0 ||
+			if (strcmp(func, "*") == 0 ||
 			    (ftrace_mod->func &&
 			     strcmp(ftrace_mod->func, func) == 0)) {
 				ret = 0;