From mboxrd@z Thu Jan 1 00:00:00 1970 From: Sergei Shtylyov Date: Mon, 01 Dec 2014 12:19:08 +0000 Subject: Re: [PATCH 1/3] net-PPP: Deletion of unnecessary checks before the function call "kfree" Message-Id: <547C5CBC.6060607@cogentembedded.com> List-Id: 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> In-Reply-To: <547B496E.604@users.sourceforge.net> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: SF Markus Elfring , Paul Mackerras , linux-ppp@vger.kernel.org, netdev@vger.kernel.org Cc: LKML , kernel-janitors@vger.kernel.org, Julia Lawall Hello. On 11/30/2014 7:44 PM, SF Markus Elfring wrote: > From: Markus Elfring > Date: Sun, 30 Nov 2014 17:02:07 +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 | 14 ++++++-------- > 1 file changed, 6 insertions(+), 8 deletions(-) > diff --git a/drivers/net/ppp/ppp_mppe.c b/drivers/net/ppp/ppp_mppe.c > index 911b216..7e44212 100644 > --- a/drivers/net/ppp/ppp_mppe.c > +++ b/drivers/net/ppp/ppp_mppe.c > @@ -238,8 +238,7 @@ 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); Please keep this line aligned to the others. > if (state->sha1) > crypto_free_hash(state->sha1); > if (state->arc4) [...] WBR, Sergei