Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754834AbaLDWPR (ORCPT ); Thu, 4 Dec 2014 17:15:17 -0500 Received: from mout.web.de ([212.227.15.14]:56691 "EHLO mout.web.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753014AbaLDWPP (ORCPT ); Thu, 4 Dec 2014 17:15:15 -0500 Message-ID: <5480DCEE.4070803@users.sourceforge.net> Date: Thu, 04 Dec 2014 23:15:10 +0100 From: SF Markus Elfring User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.3.0 MIME-Version: 1.0 To: Sergei Shtylyov , Paul Mackerras , linux-ppp@vger.kernel.org, netdev@vger.kernel.org, Eric Dumazet CC: LKML , kernel-janitors@vger.kernel.org, Julia Lawall Subject: [PATCH v2 3/6] net-PPP: Deletion of unnecessary checks before the function call "kfree" References: <5307CAA2.8060406@users.sourceforge.net> <530A086E.8010901@users.sourceforge.net> <530A72AA.3000601@users.sourceforge.net> <530B5FB6.6010207@users.sourceforge.net> <530C5E18.1020800@users.sourceforge.net> <530CD2C4.4050903@users.sourceforge.net> <530CF8FF.8080600@users.sourceforge.net> <530DD06F.4090703@users.sourceforge.net> <5317A59D.4@users.sourceforge.net> <547B4886.4080406@users.sourceforge.net> <547B496E.604@users.sourceforge.net> <547C5CBC.6060607@cogentembedded.com> <547C82A6.2030808@users.sourceforge.net> <547CA157.1080401@cogentembedded.com> <5480DA32.8000201@users.sourceforge.net> In-Reply-To: <5480DA32.8000201@users.sourceforge.net> Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit X-Provags-ID: V03:K0:XZC8Tu0UNS6rWgRke8VSCOWa0jDvIYibSf55H3cgLM9SS+yDQEV m7JDbPkHd6pTUvNbYPP+5IZPH8NON2IunTR/my6ljjjH8En0GfRcuwvfFUkkc4wOmNz2THW qQTxNZ5oGCcMy2q/zItq2A2R0GqkVl+b3Ohj+zoMtW3lf9FN+cHaavOAkoI61I1XxzlR85s MX0FYgs7ulLPeOsMiY1xg== X-UI-Out-Filterresults: notjunk:1; Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Markus Elfring Date: Thu, 4 Dec 2014 22:22:23 +0100 The kfree() function tests whether its argument is NULL and then returns immediately. Thus the test around the call is not needed. This issue was detected by using the Coccinelle software. Signed-off-by: Markus Elfring --- drivers/net/ppp/ppp_mppe.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/net/ppp/ppp_mppe.c b/drivers/net/ppp/ppp_mppe.c index b80af29..94ff216 100644 --- a/drivers/net/ppp/ppp_mppe.c +++ b/drivers/net/ppp/ppp_mppe.c @@ -237,8 +237,7 @@ static void *mppe_alloc(unsigned char *options, int optlen) return (void *)state; out_free: - if (state->sha1_digest) - kfree(state->sha1_digest); + kfree(state->sha1_digest); if (state->sha1) crypto_free_hash(state->sha1); if (state->arc4) @@ -255,8 +254,7 @@ static void mppe_free(void *arg) { struct ppp_mppe_state *state = (struct ppp_mppe_state *) arg; if (state) { - if (state->sha1_digest) - kfree(state->sha1_digest); + kfree(state->sha1_digest); if (state->sha1) crypto_free_hash(state->sha1); if (state->arc4) -- 2.1.3 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/