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client-ip=165.204.84.17; helo=SATLEXMB04.amd.com; pr=C Received: from SATLEXMB04.amd.com (165.204.84.17) by SN1PEPF000397B4.mail.protection.outlook.com (10.167.248.58) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.20.8398.14 via Frontend Transport; Thu, 6 Feb 2025 11:57:29 +0000 Received: from SATLEXMB04.amd.com (10.181.40.145) by SATLEXMB04.amd.com (10.181.40.145) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.39; Thu, 6 Feb 2025 05:57:27 -0600 Received: from xhdsneeli40.xilinx.com (10.180.168.240) by SATLEXMB04.amd.com (10.181.40.145) with Microsoft SMTP Server id 15.1.2507.39 via Frontend Transport; Thu, 6 Feb 2025 05:57:24 -0600 From: Manikanta Guntupalli To: , , , , , , CC: , , , , "Manikanta Guntupalli" Subject: [PATCH 1/2] i2c: cadence: Simplify using devm_clk_get_enabled() Date: Thu, 6 Feb 2025 17:27:07 +0530 Message-ID: <20250206115708.1085523-2-manikanta.guntupalli@amd.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20250206115708.1085523-1-manikanta.guntupalli@amd.com> References: <20250206115708.1085523-1-manikanta.guntupalli@amd.com> Precedence: bulk X-Mailing-List: linux-i2c@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Received-SPF: None (SATLEXMB04.amd.com: manikanta.guntupalli@amd.com does not designate permitted sender hosts) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: SN1PEPF000397B4:EE_|SJ0PR12MB7068:EE_ X-MS-Office365-Filtering-Correlation-Id: 09cb3d21-9b3b-4fdd-1a0f-08dd46a56e5b X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; ARA:13230040|376014|36860700013|82310400026|1800799024; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:165.204.84.17; CTRY:US; LANG:en; SCL:1; SRV:; IPV:CAL; SFV:NSPM; H:SATLEXMB04.amd.com; PTR:InfoDomainNonexistent; CAT:NONE; SFS:(13230040)(376014)(36860700013)(82310400026)(1800799024); DIR:OUT; SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 06 Feb 2025 11:57:29.0553 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 09cb3d21-9b3b-4fdd-1a0f-08dd46a56e5b X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d; Ip=[165.204.84.17]; Helo=[SATLEXMB04.amd.com] X-MS-Exchange-CrossTenant-AuthSource: SN1PEPF000397B4.namprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SJ0PR12MB7068 From: Michal Simek Clock handling can be very simplified with using devm_clk_get_enabled() as was done by commit 8d2aaf4382b7 ("gpio: zynq: Simplify using devm_clk_get_enabled()"). And also fix issue in connection to incorrect sequence when err_clk_dis label is called. When reset_control_deassert() fails it jumps to err_clk_dis label which disables clock and also disable pm_runtime setup but nothing has been setup at this time of failure because initialization is done below reset_control_deassert() call. Signed-off-by: Michal Simek Signed-off-by: Manikanta Guntupalli --- drivers/i2c/busses/i2c-cadence.c | 17 ++++------------- 1 file changed, 4 insertions(+), 13 deletions(-) diff --git a/drivers/i2c/busses/i2c-cadence.c b/drivers/i2c/busses/i2c-cadence.c index b64026fbca66..51dc7728d133 100644 --- a/drivers/i2c/busses/i2c-cadence.c +++ b/drivers/i2c/busses/i2c-cadence.c @@ -1541,7 +1541,7 @@ static int cdns_i2c_probe(struct platform_device *pdev) snprintf(id->adap.name, sizeof(id->adap.name), "Cadence I2C at %08lx", (unsigned long)r_mem->start); - id->clk = devm_clk_get(&pdev->dev, NULL); + id->clk = devm_clk_get_enabled(&pdev->dev, NULL); if (IS_ERR(id->clk)) return dev_err_probe(&pdev->dev, PTR_ERR(id->clk), "input clock not found.\n"); @@ -1551,16 +1551,10 @@ static int cdns_i2c_probe(struct platform_device *pdev) return dev_err_probe(&pdev->dev, PTR_ERR(id->reset), "Failed to request reset.\n"); - ret = clk_prepare_enable(id->clk); - if (ret) - dev_err(&pdev->dev, "Unable to enable clock.\n"); - ret = reset_control_deassert(id->reset); - if (ret) { - dev_err_probe(&pdev->dev, ret, - "Failed to de-assert reset.\n"); - goto err_clk_dis; - } + if (ret) + return dev_err_probe(&pdev->dev, ret, + "Failed to de-assert reset.\n"); pm_runtime_set_autosuspend_delay(id->dev, CNDS_I2C_PM_TIMEOUT); pm_runtime_use_autosuspend(id->dev); @@ -1616,8 +1610,6 @@ static int cdns_i2c_probe(struct platform_device *pdev) err_clk_notifier_unregister: clk_notifier_unregister(id->clk, &id->clk_rate_change_nb); reset_control_assert(id->reset); -err_clk_dis: - clk_disable_unprepare(id->clk); pm_runtime_disable(&pdev->dev); pm_runtime_set_suspended(&pdev->dev); return ret; @@ -1642,7 +1634,6 @@ static void cdns_i2c_remove(struct platform_device *pdev) i2c_del_adapter(&id->adap); clk_notifier_unregister(id->clk, &id->clk_rate_change_nb); reset_control_assert(id->reset); - clk_disable_unprepare(id->clk); } static struct platform_driver cdns_i2c_drv = { From patchwork Thu Feb 6 11:57:08 2025 Content-Type: text/plain; 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Signed-off-by: Manikanta Guntupalli --- drivers/i2c/busses/i2c-cadence.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/i2c/busses/i2c-cadence.c b/drivers/i2c/busses/i2c-cadence.c index 51dc7728d133..8df63aaf2a80 100644 --- a/drivers/i2c/busses/i2c-cadence.c +++ b/drivers/i2c/busses/i2c-cadence.c @@ -1609,9 +1609,9 @@ static int cdns_i2c_probe(struct platform_device *pdev) err_clk_notifier_unregister: clk_notifier_unregister(id->clk, &id->clk_rate_change_nb); - reset_control_assert(id->reset); pm_runtime_disable(&pdev->dev); pm_runtime_set_suspended(&pdev->dev); + reset_control_assert(id->reset); return ret; }