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=-9.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable 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 38318C18E5A for ; Tue, 10 Mar 2020 09:13:13 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 11F5124681 for ; Tue, 10 Mar 2020 09:13:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726508AbgCJJMh (ORCPT ); Tue, 10 Mar 2020 05:12:37 -0400 Received: from 8bytes.org ([81.169.241.247]:50558 "EHLO theia.8bytes.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726469AbgCJJMg (ORCPT ); Tue, 10 Mar 2020 05:12:36 -0400 Received: by theia.8bytes.org (Postfix, from userid 1000) id 019B87AB; Tue, 10 Mar 2020 10:12:32 +0100 (CET) From: Joerg Roedel To: iommu@lists.linux-foundation.org Cc: linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-mediatek@lists.infradead.org, virtualization@lists.linux-foundation.org, Lorenzo Pieralisi , Hanjun Guo , Sudeep Holla , Rob Clark , Sean Paul , Will Deacon , Robin Murphy , Joerg Roedel , Matthias Brugger , Thierry Reding , Jean-Philippe Brucker , Andy Gross , Bjorn Andersson , Joerg Roedel Subject: [PATCH 07/15] iommu/arm-smmu: Fix uninitilized variable warning Date: Tue, 10 Mar 2020 10:12:21 +0100 Message-Id: <20200310091229.29830-8-joro@8bytes.org> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200310091229.29830-1-joro@8bytes.org> References: <20200310091229.29830-1-joro@8bytes.org> Sender: linux-arm-msm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org From: Joerg Roedel Some unrelated changes in the iommu code caused a new warning to appear in the arm-smmu driver: CC drivers/iommu/arm-smmu.o drivers/iommu/arm-smmu.c: In function 'arm_smmu_add_device': drivers/iommu/arm-smmu.c:1441:2: warning: 'smmu' may be used uninitialized in this function [-Wmaybe-uninitialized] arm_smmu_rpm_put(smmu); ^~~~~~~~~~~~~~~~~~~~~~ The warning is a false positive, but initialize the variable to NULL to get rid of it. Tested-by: Will Deacon # arm-smmu Signed-off-by: Joerg Roedel --- drivers/iommu/arm-smmu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iommu/arm-smmu.c b/drivers/iommu/arm-smmu.c index 16c4b87af42b..980aae73b45b 100644 --- a/drivers/iommu/arm-smmu.c +++ b/drivers/iommu/arm-smmu.c @@ -1383,7 +1383,7 @@ struct arm_smmu_device *arm_smmu_get_by_fwnode(struct fwnode_handle *fwnode) static int arm_smmu_add_device(struct device *dev) { - struct arm_smmu_device *smmu; + struct arm_smmu_device *smmu = NULL; struct arm_smmu_master_cfg *cfg; struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev); int i, ret; -- 2.17.1 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=-9.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,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 03E9EC18E5B for ; Tue, 10 Mar 2020 09:12:54 +0000 (UTC) Received: from whitealder.osuosl.org (smtp1.osuosl.org [140.211.166.138]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id D9FFC20674 for ; Tue, 10 Mar 2020 09:12:53 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org D9FFC20674 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=8bytes.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=iommu-bounces@lists.linux-foundation.org Received: from localhost (localhost [127.0.0.1]) by whitealder.osuosl.org (Postfix) with ESMTP id BC5618855D; Tue, 10 Mar 2020 09:12:53 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from whitealder.osuosl.org ([127.0.0.1]) by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id g8t7NyXUGjio; Tue, 10 Mar 2020 09:12:49 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [140.211.9.56]) by whitealder.osuosl.org (Postfix) with ESMTP id 8A42988561; Tue, 10 Mar 2020 09:12:44 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id 69361C1D8F; Tue, 10 Mar 2020 09:12:44 +0000 (UTC) Received: from silver.osuosl.org (smtp3.osuosl.org [140.211.166.136]) by lists.linuxfoundation.org (Postfix) with ESMTP id E79EEC18D3; Tue, 10 Mar 2020 09:12:42 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by silver.osuosl.org (Postfix) with ESMTP id D1C8120456; Tue, 10 Mar 2020 09:12:42 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from silver.osuosl.org ([127.0.0.1]) by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id kRl+Zauew5W5; Tue, 10 Mar 2020 09:12:42 +0000 (UTC) X-Greylist: from auto-whitelisted by SQLgrey-1.7.6 X-Greylist: from auto-whitelisted by SQLgrey-1.7.6 Received: from theia.8bytes.org (8bytes.org [81.169.241.247]) by silver.osuosl.org (Postfix) with ESMTPS id E9BA72044D; Tue, 10 Mar 2020 09:12:41 +0000 (UTC) Received: by theia.8bytes.org (Postfix, from userid 1000) id 019B87AB; Tue, 10 Mar 2020 10:12:32 +0100 (CET) From: Joerg Roedel To: iommu@lists.linux-foundation.org Subject: [PATCH 07/15] iommu/arm-smmu: Fix uninitilized variable warning Date: Tue, 10 Mar 2020 10:12:21 +0100 Message-Id: <20200310091229.29830-8-joro@8bytes.org> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200310091229.29830-1-joro@8bytes.org> References: <20200310091229.29830-1-joro@8bytes.org> Cc: Jean-Philippe Brucker , Will Deacon , linux-arm-msm@vger.kernel.org, Sudeep Holla , linux-kernel@vger.kernel.org, virtualization@lists.linux-foundation.org, Thierry Reding , linux-mediatek@lists.infradead.org, Andy Gross , Joerg Roedel , Hanjun Guo , Matthias Brugger , Bjorn Andersson , Sean Paul , Robin Murphy X-BeenThere: iommu@lists.linux-foundation.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Development issues for Linux IOMMU support List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: iommu-bounces@lists.linux-foundation.org Sender: "iommu" From: Joerg Roedel Some unrelated changes in the iommu code caused a new warning to appear in the arm-smmu driver: CC drivers/iommu/arm-smmu.o drivers/iommu/arm-smmu.c: In function 'arm_smmu_add_device': drivers/iommu/arm-smmu.c:1441:2: warning: 'smmu' may be used uninitialized in this function [-Wmaybe-uninitialized] arm_smmu_rpm_put(smmu); ^~~~~~~~~~~~~~~~~~~~~~ The warning is a false positive, but initialize the variable to NULL to get rid of it. Tested-by: Will Deacon # arm-smmu Signed-off-by: Joerg Roedel --- drivers/iommu/arm-smmu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iommu/arm-smmu.c b/drivers/iommu/arm-smmu.c index 16c4b87af42b..980aae73b45b 100644 --- a/drivers/iommu/arm-smmu.c +++ b/drivers/iommu/arm-smmu.c @@ -1383,7 +1383,7 @@ struct arm_smmu_device *arm_smmu_get_by_fwnode(struct fwnode_handle *fwnode) static int arm_smmu_add_device(struct device *dev) { - struct arm_smmu_device *smmu; + struct arm_smmu_device *smmu = NULL; struct arm_smmu_master_cfg *cfg; struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev); int i, ret; -- 2.17.1 _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu 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=-9.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,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 B601FC10F27 for ; 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charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org From: Joerg Roedel Some unrelated changes in the iommu code caused a new warning to appear in the arm-smmu driver: CC drivers/iommu/arm-smmu.o drivers/iommu/arm-smmu.c: In function 'arm_smmu_add_device': drivers/iommu/arm-smmu.c:1441:2: warning: 'smmu' may be used uninitialized in this function [-Wmaybe-uninitialized] arm_smmu_rpm_put(smmu); ^~~~~~~~~~~~~~~~~~~~~~ The warning is a false positive, but initialize the variable to NULL to get rid of it. Tested-by: Will Deacon # arm-smmu Signed-off-by: Joerg Roedel --- drivers/iommu/arm-smmu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iommu/arm-smmu.c b/drivers/iommu/arm-smmu.c index 16c4b87af42b..980aae73b45b 100644 --- a/drivers/iommu/arm-smmu.c +++ b/drivers/iommu/arm-smmu.c @@ -1383,7 +1383,7 @@ struct arm_smmu_device *arm_smmu_get_by_fwnode(struct fwnode_handle *fwnode) static int arm_smmu_add_device(struct device *dev) { - struct arm_smmu_device *smmu; + struct arm_smmu_device *smmu = NULL; struct arm_smmu_master_cfg *cfg; struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev); int i, ret; -- 2.17.1 _______________________________________________ Linux-mediatek mailing list Linux-mediatek@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-mediatek