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Received: from LV2PR12MB5869.namprd12.prod.outlook.com (2603:10b6:408:176::16) by CH3PR12MB9282.namprd12.prod.outlook.com (2603:10b6:610:1cb::8) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6954.21; Fri, 3 Nov 2023 16:45:10 +0000 Received: from LV2PR12MB5869.namprd12.prod.outlook.com ([fe80::b53a:1092:9be2:cfb9]) by LV2PR12MB5869.namprd12.prod.outlook.com ([fe80::b53a:1092:9be2:cfb9%4]) with mapi id 15.20.6933.027; Fri, 3 Nov 2023 16:45:10 +0000 From: Jason Gunthorpe To: acpica-devel@lists.linuxfoundation.org, Alyssa Rosenzweig , Albert Ou , asahi@lists.linux.dev, Lu Baolu , Catalin Marinas , Dexuan Cui , devicetree@vger.kernel.org, David Woodhouse , Frank Rowand , Hanjun Guo , Haiyang Zhang , Christoph Hellwig , iommu@lists.linux.dev, Jean-Philippe Brucker , Jonathan Hunter , Joerg Roedel , "K. Y. Srinivasan" , Len Brown , linux-acpi@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-hyperv@vger.kernel.org, linux-mips@vger.kernel.org, linux-riscv@lists.infradead.org, linux-snps-arc@lists.infradead.org, linux-tegra@vger.kernel.org, Russell King , Lorenzo Pieralisi , Marek Szyprowski , Hector Martin , Palmer Dabbelt , Paul Walmsley , "Rafael J. Wysocki" , Robert Moore , Rob Herring , Robin Murphy , Sudeep Holla , Suravee Suthikulpanit , Sven Peter , Thierry Reding , Thomas Bogendoerfer , Krishna Reddy , Vineet Gupta , virtualization@lists.linux-foundation.org, Wei Liu , Will Deacon Cc: Zhenhua Huang Subject: [PATCH RFC 14/17] iommu: Remove pointless iommu_fwspec_free() Date: Fri, 3 Nov 2023 13:44:59 -0300 Message-ID: <14-v1-5f734af130a3+34f-iommu_fwspec_jgg@nvidia.com> In-Reply-To: <0-v1-5f734af130a3+34f-iommu_fwspec_jgg@nvidia.com> References: X-ClientProxiedBy: BL1PR13CA0193.namprd13.prod.outlook.com (2603:10b6:208:2be::18) To LV2PR12MB5869.namprd12.prod.outlook.com (2603:10b6:408:176::16) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: LV2PR12MB5869:EE_|CH3PR12MB9282:EE_ X-MS-Office365-Filtering-Correlation-Id: 05205c05-1bb4-4825-54dd-08dbdc8c3b5a X-LD-Processed: 43083d15-7273-40c1-b7db-39efd9ccc17a,ExtAddr X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:LV2PR12MB5869.namprd12.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230031)(396003)(346002)(366004)(39860400002)(136003)(376002)(230922051799003)(186009)(64100799003)(1800799009)(451199024)(38100700002)(2616005)(36756003)(26005)(921008)(8676002)(4326008)(316002)(86362001)(6486002)(478600001)(41300700001)(66556008)(66476007)(66946007)(110136005)(6512007)(6506007)(8936002)(5660300002)(6666004)(7406005)(2906002)(7416002)(83380400001);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: 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 X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-Network-Message-Id: 05205c05-1bb4-4825-54dd-08dbdc8c3b5a X-MS-Exchange-CrossTenant-AuthSource: LV2PR12MB5869.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 03 Nov 2023 16:45:05.4345 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: udVtLTt/aWa8SKh55Z9pQlk49l014PZRGCE1+6iYzvp9uzkCjvol/Y3RhRKldbdS X-MS-Exchange-Transport-CrossTenantHeadersStamped: CH3PR12MB9282 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20231103_094527_976595_F49E4AA4 X-CRM114-Status: GOOD ( 14.78 ) X-Spam-Score: 0.6 (/) X-Spam-Report: Spam detection software, running on the system "bombadil.infradead.org", has NOT identified this incoming email as spam. The original message has been attached to this so you can view it or label similar future email. If you have any questions, see the administrator of that system for details. Content preview: These days the core code will free the fwspec if probe fails, no reason for any driver to call this on a probe failure path. Signed-off-by: Jason Gunthorpe --- drivers/iommu/arm/arm-smmu/arm-smmu.c | 14 +++++--------- drivers/iommu/tegra-smmu.c | 1 - 2 files changed, 5 insertions(+), 10 deletions(-) Content analysis details: (0.6 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- 0.0 SPF_NONE SPF: sender does not publish an SPF Record -0.0 SPF_HELO_PASS SPF: HELO matches SPF record -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain 1.0 FORGED_SPF_HELO No description available. -0.2 DKIMWL_WL_HIGH DKIMwl.org - High trust sender X-BeenThere: linux-snps-arc@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Linux on Synopsys ARC Processors List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-snps-arc" Errors-To: linux-snps-arc-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org These days the core code will free the fwspec if probe fails, no reason for any driver to call this on a probe failure path. Signed-off-by: Jason Gunthorpe Reviewed-by: Jerry Snitselaar --- drivers/iommu/arm/arm-smmu/arm-smmu.c | 14 +++++--------- drivers/iommu/tegra-smmu.c | 1 - 2 files changed, 5 insertions(+), 10 deletions(-) diff --git a/drivers/iommu/arm/arm-smmu/arm-smmu.c b/drivers/iommu/arm/arm-smmu/arm-smmu.c index d6d1a2a55cc069..854efcb1b84ddf 100644 --- a/drivers/iommu/arm/arm-smmu/arm-smmu.c +++ b/drivers/iommu/arm/arm-smmu/arm-smmu.c @@ -1348,6 +1348,8 @@ static struct iommu_device *arm_smmu_probe_device(struct device *dev) if (using_legacy_binding) { ret = arm_smmu_register_legacy_master(dev, &smmu); + if (ret) + return ERR_PTR(ret); /* * If dev->iommu_fwspec is initally NULL, arm_smmu_register_legacy_master() @@ -1355,15 +1357,12 @@ static struct iommu_device *arm_smmu_probe_device(struct device *dev) * later use. */ fwspec = dev_iommu_fwspec_get(dev); - if (ret) - goto out_free; } else if (fwspec && fwspec->ops == &arm_smmu_ops) { smmu = arm_smmu_get_by_fwnode(fwspec->iommu_fwnode); } else { return ERR_PTR(-ENODEV); } - ret = -EINVAL; for (i = 0; i < fwspec->num_ids; i++) { u16 sid = FIELD_GET(ARM_SMMU_SMR_ID, fwspec->ids[i]); u16 mask = FIELD_GET(ARM_SMMU_SMR_MASK, fwspec->ids[i]); @@ -1371,20 +1370,19 @@ static struct iommu_device *arm_smmu_probe_device(struct device *dev) if (sid & ~smmu->streamid_mask) { dev_err(dev, "stream ID 0x%x out of range for SMMU (0x%x)\n", sid, smmu->streamid_mask); - goto out_free; + return ERR_PTR(-EINVAL); } if (mask & ~smmu->smr_mask_mask) { dev_err(dev, "SMR mask 0x%x out of range for SMMU (0x%x)\n", mask, smmu->smr_mask_mask); - goto out_free; + return ERR_PTR(-EINVAL); } } - ret = -ENOMEM; cfg = kzalloc(offsetof(struct arm_smmu_master_cfg, smendx[i]), GFP_KERNEL); if (!cfg) - goto out_free; + return ERR_PTR(-ENOMEM); cfg->smmu = smmu; dev_iommu_priv_set(dev, cfg); @@ -1408,8 +1406,6 @@ static struct iommu_device *arm_smmu_probe_device(struct device *dev) out_cfg_free: kfree(cfg); -out_free: - iommu_fwspec_free(dev); return ERR_PTR(ret); } diff --git a/drivers/iommu/tegra-smmu.c b/drivers/iommu/tegra-smmu.c index 310871728ab4b6..e3101aa2f35689 100644 --- a/drivers/iommu/tegra-smmu.c +++ b/drivers/iommu/tegra-smmu.c @@ -844,7 +844,6 @@ static int tegra_smmu_configure(struct tegra_smmu *smmu, struct device *dev, err = ops->of_xlate(dev, args); if (err < 0) { dev_err(dev, "failed to parse SW group ID: %d\n", err); - iommu_fwspec_free(dev); return err; }