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Sun, 15 Oct 2023 22:34:44 -0700 From: Kartik To: , , , , , , , , , , , , , , , , , , Subject: [PATCH v5 5/8] soc/tegra: fuse: Add function to add lookups Date: Mon, 16 Oct 2023 11:04:08 +0530 Message-ID: <20231016053411.3380-6-kkartik@nvidia.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20231016053411.3380-1-kkartik@nvidia.com> References: <20231016053411.3380-1-kkartik@nvidia.com> Precedence: bulk X-Mailing-List: linux-hardening@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-NVConfidentiality: public X-NV-OnPremToCloud: ExternallySecured X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DS1PEPF00017098:EE_|BY5PR12MB4180:EE_ X-MS-Office365-Filtering-Correlation-Id: 9333ef9a-438c-4f6f-391e-08dbce09a291 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:216.228.118.233;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:mail.nvidia.com;PTR:dc7edge2.nvidia.com;CAT:NONE;SFS:(13230031)(4636009)(396003)(376002)(346002)(136003)(39860400002)(230922051799003)(82310400011)(451199024)(64100799003)(1800799009)(186009)(46966006)(36840700001)(478600001)(1076003)(7636003)(2616005)(83380400001)(82740400003)(86362001)(356005)(36756003)(6666004)(921005)(36860700001)(7416002)(2906002)(41300700001)(426003)(316002)(40480700001)(336012)(8676002)(5660300002)(26005)(47076005)(70586007)(8936002)(70206006)(110136005)(334744004)(83996005)(2101003);DIR:OUT;SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 16 Oct 2023 05:34:57.9260 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 9333ef9a-438c-4f6f-391e-08dbce09a291 X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[216.228.118.233];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: DS1PEPF00017098.namprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: BY5PR12MB4180 X-Spam-Status: No, score=-1.1 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,FORGED_SPF_HELO, RCVD_IN_DNSWL_BLOCKED,RCVD_IN_MSPIKE_H2,SPF_HELO_PASS,SPF_NONE autolearn=no autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Add helper function tegra_fuse_add_lookups() to register Tegra fuse nvmem lookups. So, this can be shared between tegra_fuse_init() and ACPI probe, which is to be introduced later. Use kmemdup_array to duplicate fuse->soc->lookups. Signed-off-by: Kartik --- v3 -> v4: * Use kmemdup_array to duplicate fuse->soc->lookups. * Return err at the end of tegra_fuse_probe to remove redundant code. v1 -> v2: * Use size_mul to calculate lookups array size. --- drivers/soc/tegra/fuse/fuse-tegra.c | 25 +++++++++++++++++-------- 1 file changed, 17 insertions(+), 8 deletions(-) diff --git a/drivers/soc/tegra/fuse/fuse-tegra.c b/drivers/soc/tegra/fuse/fuse-tegra.c index 98805885158e..c91194612a9a 100644 --- a/drivers/soc/tegra/fuse/fuse-tegra.c +++ b/drivers/soc/tegra/fuse/fuse-tegra.c @@ -113,6 +113,18 @@ static void tegra_fuse_restore(void *base) fuse->clk = NULL; } +static int tegra_fuse_add_lookups(struct tegra_fuse *fuse) +{ + fuse->lookups = kmemdup_array(fuse->soc->lookups, sizeof(*fuse->lookups), + fuse->soc->num_lookups, GFP_KERNEL); + if (!fuse->lookups) + return -ENOMEM; + + nvmem_add_cell_lookups(fuse->lookups, fuse->soc->num_lookups); + + return 0; +} + static int tegra_fuse_probe(struct platform_device *pdev) { void __iomem *base = fuse->base; @@ -398,6 +410,7 @@ static int __init tegra_init_fuse(void) const struct of_device_id *match; struct device_node *np; struct resource regs; + int err; tegra_init_apbmisc(); @@ -495,15 +508,11 @@ static int __init tegra_init_fuse(void) pr_debug("Tegra CPU Speedo ID %d, SoC Speedo ID %d\n", tegra_sku_info.cpu_speedo_id, tegra_sku_info.soc_speedo_id); - if (fuse->soc->lookups) { - size_t size = sizeof(*fuse->lookups) * fuse->soc->num_lookups; + err = tegra_fuse_add_lookups(fuse); + if (err) + pr_err("failed to add FUSE lookups\n"); - fuse->lookups = kmemdup(fuse->soc->lookups, size, GFP_KERNEL); - if (fuse->lookups) - nvmem_add_cell_lookups(fuse->lookups, fuse->soc->num_lookups); - } - - return 0; + return err; } early_initcall(tegra_init_fuse);