Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754346Ab2HEJwt (ORCPT ); Sun, 5 Aug 2012 05:52:49 -0400 Received: from mail4-relais-sop.national.inria.fr ([192.134.164.105]:9379 "EHLO mail4-relais-sop.national.inria.fr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754201Ab2HEJwp (ORCPT ); Sun, 5 Aug 2012 05:52:45 -0400 X-IronPort-AV: E=Sophos;i="4.77,715,1336341600"; d="scan'208";a="152465604" From: Julia Lawall To: "Rafael J. Wysocki" Cc: kernel-janitors@vger.kernel.org, cpufreq@vger.kernel.org, linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, Julia Lawall Subject: [PATCH 2/6] drivers/cpufreq/pcc-cpufreq.c: fix error return code Date: Sun, 5 Aug 2012 11:52:32 +0200 Message-Id: <1344160356-387-3-git-send-email-Julia.Lawall@lip6.fr> X-Mailer: git-send-email 1.7.8.6 In-Reply-To: <1344160356-387-1-git-send-email-Julia.Lawall@lip6.fr> References: <1344160356-387-1-git-send-email-Julia.Lawall@lip6.fr> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1423 Lines: 54 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 --- 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/