From patchwork Sun Dec 23 08:57:07 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Julia Lawall X-Patchwork-Id: 10741621 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id ED19F161F for ; Sun, 23 Dec 2018 09:35:16 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id DCB5228A81 for ; Sun, 23 Dec 2018 09:35:16 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id D12E428AE0; Sun, 23 Dec 2018 09:35:16 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 852F028A81 for ; Sun, 23 Dec 2018 09:35:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727447AbeLWJfO (ORCPT ); Sun, 23 Dec 2018 04:35:14 -0500 Received: from mail3-relais-sop.national.inria.fr ([192.134.164.104]:44311 "EHLO mail3-relais-sop.national.inria.fr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727321AbeLWJeC (ORCPT ); Sun, 23 Dec 2018 04:34:02 -0500 X-IronPort-AV: E=Sophos;i="5.56,386,1539640800"; d="scan'208";a="289991777" Received: from palace.lip6.fr ([132.227.105.202]) by mail3-relais-sop.national.inria.fr with ESMTP/TLS/AES128-SHA256; 23 Dec 2018 10:33:54 +0100 From: Julia Lawall To: Viresh Kumar Cc: kernel-janitors@vger.kernel.org, Andy Shevchenko , Vinod Koul , Dan Williams , dmaengine@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 12/20] dmaengine: dw: drop useless LIST_HEAD Date: Sun, 23 Dec 2018 09:57:07 +0100 Message-Id: <1545555435-24576-13-git-send-email-Julia.Lawall@lip6.fr> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1545555435-24576-1-git-send-email-Julia.Lawall@lip6.fr> References: <1545555435-24576-1-git-send-email-Julia.Lawall@lip6.fr> Sender: dmaengine-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: dmaengine@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Drop LIST_HEAD where the variable it declares is never used. Commit ab703f818ac3 ("dmaengine: dw: lazy allocation of dma descriptors") removed the uses, but not the declaration. The semantic patch that fixes this problem is as follows: (http://coccinelle.lip6.fr/) // @@ identifier x; @@ - LIST_HEAD(x); ... when != x // Fixes: ab703f818ac3 ("dmaengine: dw: lazy allocation of dma descriptors") Signed-off-by: Julia Lawall --- Successfully 0-day tested on 151 configurations. drivers/dma/dw/core.c | 1 - 1 file changed, 1 deletion(-) diff --git a/drivers/dma/dw/core.c b/drivers/dma/dw/core.c index dc053e62f894..290d21be4d4c 100644 --- a/drivers/dma/dw/core.c +++ b/drivers/dma/dw/core.c @@ -1150,7 +1150,6 @@ static void dwc_free_chan_resources(struct dma_chan *chan) struct dw_dma_chan *dwc = to_dw_dma_chan(chan); struct dw_dma *dw = to_dw_dma(chan->device); unsigned long flags; - LIST_HEAD(list); dev_dbg(chan2dev(chan), "%s: descs allocated=%u\n", __func__, dwc->descs_allocated);