Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754263Ab2HEJwp (ORCPT ); Sun, 5 Aug 2012 05:52:45 -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 S1754193Ab2HEJwo (ORCPT ); Sun, 5 Aug 2012 05:52:44 -0400 X-IronPort-AV: E=Sophos;i="4.77,715,1336341600"; d="scan'208";a="152465602" From: Julia Lawall To: linux-kernel@vger.kernel.org Cc: kernel-janitors@vger.kernel.org Subject: [PATCH 0/6] fix error return code Date: Sun, 5 Aug 2012 11:52:30 +0200 Message-Id: <1344160356-387-1-git-send-email-Julia.Lawall@lip6.fr> X-Mailer: git-send-email 1.7.8.6 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1065 Lines: 58 These patches fix cases where the return code appears to be unintentially 0. The complete semantic match that finds the problem is as follows: (http://coccinelle.lip6.fr/) // @r@ identifier f; expression ret,e; constant C; @@ f(...) { <+... ( return -C; | ret = -C ... when != ret = e return ret; | if (ret < 0) { ... return ret; } ) ...+> } @s@ identifier r.f,ret; @@ f(...) { <+... return ret; ...+> } @@ identifier r.f,s.ret; expression e,e1,e2,e3,e4,x; @@ f(...) { <+... ( 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; } ...+> } // -- 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/