From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Nicholas A. Bellinger" Subject: Re: [PATCH] target/configfs: Remove unnecessary null test Date: Tue, 29 Jul 2014 18:23:23 -0700 Message-ID: <1406683403.6628.58.camel@haakon3.risingtidesystems.com> References: <20140716205953.GA3231@himangi-Dell> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20140716205953.GA3231@himangi-Dell> Sender: linux-kernel-owner@vger.kernel.org To: Himangi Saraogi Cc: linux-scsi@vger.kernel.org, target-devel@vger.kernel.org, linux-kernel@vger.kernel.org, julia.lawall@lip6.fr List-Id: linux-scsi@vger.kernel.org Hi Himangi, On Thu, 2014-07-17 at 02:29 +0530, Himangi Saraogi wrote: > This patch removes the null test on lun_cg. lun_cg is initialized > at the beginning of the function to &lun->lun_group. Since lun_cg is > dereferenced prior to the null test, it must be a valid pointer. > > The following Coccinelle script is used for detecting the change: > > @r@ > expression e,f; > identifier g,y; > statement S1,S2; > @@ > > *e = &f->g > <+... > f->y > ...+> > *if (e != NULL || ...) > S1 else S2 > > Signed-off-by: Himangi Saraogi > Acked-by: Julia Lawall > --- > drivers/target/target_core_fabric_configfs.c | 3 +-- > 1 file changed, 1 insertion(+), 2 deletions(-) > > diff --git a/drivers/target/target_core_fabric_configfs.c b/drivers/target/target_core_fabric_configfs.c > index 7de9f04..7228a18 100644 > --- a/drivers/target/target_core_fabric_configfs.c > +++ b/drivers/target/target_core_fabric_configfs.c > @@ -917,8 +917,7 @@ static struct config_group *target_fabric_make_lun( > > return &lun->lun_group; > out: > - if (lun_cg) > - kfree(lun_cg->default_groups); > + kfree(lun_cg->default_groups); > return ERR_PTR(errno); > } > Thanks, applied to target-pending/for-next. --nab