Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755087Ab2HEVF5 (ORCPT ); Sun, 5 Aug 2012 17:05:57 -0400 Received: from ogre.sisk.pl ([193.178.161.156]:42744 "EHLO ogre.sisk.pl" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755054Ab2HEVFw (ORCPT ); Sun, 5 Aug 2012 17:05:52 -0400 From: "Rafael J. Wysocki" To: Julia Lawall Subject: Re: [PATCH 2/6] drivers/cpufreq/pcc-cpufreq.c: fix error return code Date: Sun, 5 Aug 2012 23:11:44 +0200 User-Agent: KMail/1.13.6 (Linux/3.5.0+; KDE/4.6.0; x86_64; ; ) Cc: kernel-janitors@vger.kernel.org, cpufreq@vger.kernel.org, linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, Julia Lawall References: <1344160356-387-1-git-send-email-Julia.Lawall@lip6.fr> <1344160356-387-3-git-send-email-Julia.Lawall@lip6.fr> In-Reply-To: <1344160356-387-3-git-send-email-Julia.Lawall@lip6.fr> MIME-Version: 1.0 Content-Type: Text/Plain; charset="iso-8859-2" Content-Transfer-Encoding: 7bit Message-Id: <201208052311.44825.rjw@sisk.pl> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1692 Lines: 65 On Sunday, August 05, 2012, Julia Lawall wrote: > From: Julia Lawall > > Convert a 0 error return code to a negative one, as returned elsewhere in the > function. > > A simplified version of the semantic match that finds this problem is as > follows: (http://coccinelle.lip6.fr/) > > // > @@ > identifier ret; > expression e,e1,e2,e3,e4,x; > @@ > > ( > if (\(ret != 0\|ret < 0\) || ...) { ... return ...; } > | > ret = 0 > ) > ... when != ret = e1 > *x = \(kmalloc\|kzalloc\|kcalloc\|devm_kzalloc\|ioremap\|ioremap_nocache\|devm_ioremap\|devm_ioremap_nocache\)(...); > ... when != x = e2 > when != ret = e3 > *if (x == NULL || ...) > { > ... when != ret = e4 > * return ret; > } > // > > Signed-off-by: Julia Lawall Applied to the linux-next branch of the linux-pm.git tree. I'm going to push it as a fix for v3.6. Thanks, Rafael > --- > drivers/cpufreq/pcc-cpufreq.c | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/drivers/cpufreq/pcc-cpufreq.c b/drivers/cpufreq/pcc-cpufreq.c > index cdc02ac..503996a 100644 > --- a/drivers/cpufreq/pcc-cpufreq.c > +++ b/drivers/cpufreq/pcc-cpufreq.c > @@ -454,6 +454,7 @@ static int __init pcc_cpufreq_probe(void) > mem_resource->address_length); > if (pcch_virt_addr == NULL) { > pr_debug("probe: could not map shared mem region\n"); > + ret = -ENOMEM; > goto out_free; > } > pcch_hdr = pcch_virt_addr; > > > -- 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/