Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754507Ab2HEJx7 (ORCPT ); Sun, 5 Aug 2012 05:53:59 -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 S1754193Ab2HEJwq (ORCPT ); Sun, 5 Aug 2012 05:52:46 -0400 X-IronPort-AV: E=Sophos;i="4.77,715,1336341600"; d="scan'208";a="152465607" From: Julia Lawall To: Mark Gross Cc: kernel-janitors@vger.kernel.org, Arnd Bergmann , Greg Kroah-Hartman , linux-kernel@vger.kernel.org, Julia Lawall Subject: [PATCH 5/6] drivers/char/tlclk.c: fix error return code Date: Sun, 5 Aug 2012 11:52:35 +0200 Message-Id: <1344160356-387-6-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: 1478 Lines: 58 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/char/tlclk.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/char/tlclk.c b/drivers/char/tlclk.c index ce29e7c..e95e0ab 100644 --- a/drivers/char/tlclk.c +++ b/drivers/char/tlclk.c @@ -784,8 +784,10 @@ static int __init tlclk_init(void) } tlclk_major = ret; alarm_events = kzalloc( sizeof(struct tlclk_alarms), GFP_KERNEL); - if (!alarm_events) + if (!alarm_events) { + ret = -ENOMEM; goto out1; + } /* Read telecom clock IRQ number (Set by BIOS) */ if (!request_region(TLCLK_BASE, 8, "telco_clock")) { -- 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/