From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-3.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id B577AC4321D for ; Sat, 18 Aug 2018 06:27:59 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 66F392188F for ; Sat, 18 Aug 2018 06:27:59 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 66F392188F Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=huawei.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726386AbeHRJe1 (ORCPT ); Sat, 18 Aug 2018 05:34:27 -0400 Received: from szxga07-in.huawei.com ([45.249.212.35]:50450 "EHLO huawei.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726072AbeHRJe1 (ORCPT ); Sat, 18 Aug 2018 05:34:27 -0400 Received: from DGGEMS411-HUB.china.huawei.com (unknown [172.30.72.60]) by Forcepoint Email with ESMTP id 72BB6FA0CF6B2; Sat, 18 Aug 2018 14:27:51 +0800 (CST) Received: from linux-ibm.site (10.175.102.37) by DGGEMS411-HUB.china.huawei.com (10.3.19.211) with Microsoft SMTP Server id 14.3.399.0; Sat, 18 Aug 2018 14:27:52 +0800 From: zhong jiang To: CC: , , , , Subject: [PATCHv2] ide: Use NULL to compare with pointer-typed value rather than 0 Date: Sat, 18 Aug 2018 14:16:01 +0800 Message-ID: <1534572961-16423-1-git-send-email-zhongjiang@huawei.com> X-Mailer: git-send-email 1.7.12.4 MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [10.175.102.37] X-CFilter-Loop: Reflected Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org We should use NULL to compare with pointer-typed value rather than 0. The issue is detected with the help of Coccinelle. Signed-off-by: zhong jiang --- drivers/ide/pmac.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/ide/pmac.c b/drivers/ide/pmac.c index c5b902b..ca36a97 100644 --- a/drivers/ide/pmac.c +++ b/drivers/ide/pmac.c @@ -1682,7 +1682,7 @@ static int pmac_ide_init_dma(ide_hwif_t *hwif, const struct ide_port_info *d) /* We won't need pci_dev if we switch to generic consistent * DMA routines ... */ - if (dev == NULL || pmif->dma_regs == 0) + if (!dev || !pmif->dma_regs) return -ENODEV; /* * Allocate space for the DBDMA commands. -- 1.7.12.4