From patchwork Sat Dec 29 05:05:26 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Peng Hao X-Patchwork-Id: 10744741 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 7F7E191E for ; Sat, 29 Dec 2018 04:45:28 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 5D07A28BA5 for ; Sat, 29 Dec 2018 04:45:28 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 4A4FF28CE2; Sat, 29 Dec 2018 04:45:28 +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=-5.2 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id CB61F28BA5 for ; Sat, 29 Dec 2018 04:45:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:MIME-Version:Cc:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id:Message-Id:Date: Subject:To:From:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To: References:List-Owner; bh=gZ9nSLx4yc3RSp7g5EaZ3dwm77fm33KjQyv4K89kzBo=; b=Hwk DVkGNGWpb3Ka6VDy1mQrIj9GqiID0dgItg3bIEB5XCk3HKFanScPOJd0r0bAq6BqVPTkFV3TQezp7 +dLBF3I3/qaKDeYnajbyrnOE90n1AUrUxzNKV60BvgEp/DCMQHmFqlq06jVfmdK4GVukDlxEdUw7L SZNYl3Abzz8sg4E3FZem+M06Hwg8GTuuTeW5zZo9NHL9FbBWZ3NFJ7CElbCyYI2TWsil6u1Mq9w77 +BCo4/skHHXF7MM1ghiOO09zueU7vNni02BhhZr8kqEIs/seE0qsRjp5JDikOZbnpWncUcluDRBLS B8uxYKyE5YwqJm1rpf4v2qYXm7kv9kw==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1gd6Us-00087k-0Y; Sat, 29 Dec 2018 04:45:14 +0000 Received: from mxhk.zte.com.cn ([63.217.80.70]) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1gd6Un-0006mt-RN for linux-arm-kernel@lists.infradead.org; Sat, 29 Dec 2018 04:45:12 +0000 Received: from mse01.zte.com.cn (unknown [10.30.3.20]) by Forcepoint Email with ESMTPS id 4B826DBFEDF8EAE682DE; Sat, 29 Dec 2018 12:44:46 +0800 (CST) Received: from notes_smtp.zte.com.cn ([10.30.1.239]) by mse01.zte.com.cn with ESMTP id wBT4ieTc075448; Sat, 29 Dec 2018 12:44:40 +0800 (GMT-8) (envelope-from peng.hao2@zte.com.cn) Received: from localhost.localdomain.localdomain ([10.74.120.59]) by szsmtp06.zte.com.cn (Lotus Domino Release 8.5.3FP6) with ESMTP id 2018122912452431-19455156 ; Sat, 29 Dec 2018 12:45:24 +0800 From: Peng Hao To: linux@armlinux.org.uk Subject: [PATCH 1/2] arm/common/dmabounce : NULL check before dma_pool_destroy Date: Sat, 29 Dec 2018 13:05:26 +0800 Message-Id: <1546059926-97458-1-git-send-email-peng.hao2@zte.com.cn> X-Mailer: git-send-email 1.8.3.1 X-MIMETrack: Itemize by SMTP Server on SZSMTP06/server/zte_ltd(Release 8.5.3FP6|November 21, 2013) at 2018-12-29 12:45:24, Serialize by Router on notes_smtp/zte_ltd(Release 9.0.1FP7|August 17, 2016) at 2018-12-29 12:44:20, Serialize complete at 2018-12-29 12:44:20 X-MAIL: mse01.zte.com.cn wBT4ieTc075448 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20181228_204510_054863_E8A10218 X-CRM114-Status: GOOD ( 10.68 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Peng Hao , linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP NULL check before dma_pool_destroy is unnecessary because there is a NULL check in dma_pool_destroy. Signed-off-by: Peng Hao --- arch/arm/common/dmabounce.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/arch/arm/common/dmabounce.c b/arch/arm/common/dmabounce.c index 9a92de6..dcdd80c 100644 --- a/arch/arm/common/dmabounce.c +++ b/arch/arm/common/dmabounce.c @@ -569,10 +569,8 @@ void dmabounce_unregister_dev(struct device *dev) BUG(); } - if (device_info->small.pool) - dma_pool_destroy(device_info->small.pool); - if (device_info->large.pool) - dma_pool_destroy(device_info->large.pool); + dma_pool_destroy(device_info->small.pool); + dma_pool_destroy(device_info->large.pool); #ifdef STATS if (device_info->attr_res == 0)