From patchwork Mon Oct 12 20:43:14 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Julia Lawall X-Patchwork-Id: 7379071 Return-Path: X-Original-To: patchwork-linux-omap@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id B9A4ABEEA4 for ; Mon, 12 Oct 2015 20:55:53 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 0787E206A3 for ; Mon, 12 Oct 2015 20:55:53 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 220B2205CD for ; Mon, 12 Oct 2015 20:55:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751893AbbJLUyP (ORCPT ); Mon, 12 Oct 2015 16:54:15 -0400 Received: from mail2-relais-roc.national.inria.fr ([192.134.164.83]:22489 "EHLO mail2-relais-roc.national.inria.fr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751448AbbJLUyO (ORCPT ); Mon, 12 Oct 2015 16:54:14 -0400 X-IronPort-AV: E=Sophos;i="5.17,674,1437429600"; d="scan'208";a="182424075" Received: from palace.rsr.lip6.fr (HELO localhost.localdomain) ([132.227.105.202]) by mail2-relais-roc.national.inria.fr with ESMTP/TLS/AES128-SHA256; 12 Oct 2015 22:54:12 +0200 From: Julia Lawall To: Tomi Valkeinen Cc: kernel-janitors@vger.kernel.org, Jean-Christophe Plagniol-Villard , linux-omap@vger.kernel.org, linux-fbdev@vger.kernel.org, linux-kernel@vger.kernel.org, Russell King - ARM Linux , Thomas Petazzoni , Andrew Lunn , Bjorn Helgaas , Jason Cooper Subject: [PATCH 1/3] video: omapdss: delete unneeded of_node_put Date: Mon, 12 Oct 2015 22:43:14 +0200 Message-Id: <1444682596-3065-2-git-send-email-Julia.Lawall@lip6.fr> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1444682596-3065-1-git-send-email-Julia.Lawall@lip6.fr> References: <1444682596-3065-1-git-send-email-Julia.Lawall@lip6.fr> Sender: linux-omap-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-omap@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Device node iterators perform an of_node_put on each iteration, so putting an of_node_put before a continue results in a double put. A simplified version of the semantic match that finds this problem is as follows (http://coccinelle.lip6.fr): // @@ expression root,e; local idexpression child; iterator i; @@ i(..., child, ...) { ... when != of_node_get(child) * of_node_put(child); ... * continue; } // Signed-off-by: Julia Lawall --- drivers/video/fbdev/omap2/dss/omapdss-boot-init.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html diff --git a/drivers/video/fbdev/omap2/dss/omapdss-boot-init.c b/drivers/video/fbdev/omap2/dss/omapdss-boot-init.c index 8b6f6d5..136d304 100644 --- a/drivers/video/fbdev/omap2/dss/omapdss-boot-init.c +++ b/drivers/video/fbdev/omap2/dss/omapdss-boot-init.c @@ -199,10 +199,8 @@ static int __init omapdss_boot_init(void) omapdss_walk_device(dss, true); for_each_available_child_of_node(dss, child) { - if (!of_find_property(child, "compatible", NULL)) { - of_node_put(child); + if (!of_find_property(child, "compatible", NULL)) continue; - } omapdss_walk_device(child, true); }