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Thu, 30 Jan 2025 06:34:46 -0800 From: Kartik Rajput To: , , , , , , , , , , , , Subject: [PATCH v2 2/5] i2c: tegra: Do not configure DMA if not supported Date: Thu, 30 Jan 2025 20:04:21 +0530 Message-ID: <20250130143424.52389-3-kkartik@nvidia.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20250130143424.52389-1-kkartik@nvidia.com> References: <20250130143424.52389-1-kkartik@nvidia.com> Precedence: bulk X-Mailing-List: linux-i2c@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-NV-OnPremToCloud: AnonymousSubmission X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BL6PEPF0001AB59:EE_|BL1PR12MB5802:EE_ X-MS-Office365-Filtering-Correlation-Id: 93380b55-b7b6-4629-b709-08dd413b4d0f X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; ARA:13230040|1800799024|376014|7416014|82310400026|36860700013|921020; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:216.228.117.160; CTRY:US; LANG:en; SCL:1; SRV:; IPV:NLI; SFV:NSPM; H:mail.nvidia.com; PTR:dc6edge1.nvidia.com; CAT:NONE; SFS:(13230040)(1800799024)(376014)(7416014)(82310400026)(36860700013)(921020); DIR:OUT; SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 30 Jan 2025 14:35:10.6042 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 93380b55-b7b6-4629-b709-08dd413b4d0f X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a; Ip=[216.228.117.160]; Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: BL6PEPF0001AB59.namprd02.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: BL1PR12MB5802 On Tegra264, not all I2C controllers have the necessary interface to GPC DMA, this causes failures when function tegra_i2c_init_dma() is called. Ensure that "dmas" device-tree property is present before initializing DMA in function tegra_i2c_init_dma(). Signed-off-by: Kartik Rajput --- v1 -> v2: * Update commit message to clarify that some I2C controllers may not have the necessary interface to GPC DMA. --- drivers/i2c/busses/i2c-tegra.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/i2c/busses/i2c-tegra.c b/drivers/i2c/busses/i2c-tegra.c index 87976e99e6d0..b0dd129714a2 100644 --- a/drivers/i2c/busses/i2c-tegra.c +++ b/drivers/i2c/busses/i2c-tegra.c @@ -442,6 +442,9 @@ static int tegra_i2c_init_dma(struct tegra_i2c_dev *i2c_dev) if (IS_VI(i2c_dev)) return 0; + if (!device_property_present(i2c_dev->dev, "dmas")) + return 0; + if (i2c_dev->hw->has_apb_dma) { if (!IS_ENABLED(CONFIG_TEGRA20_APB_DMA)) { dev_dbg(i2c_dev->dev, "APB DMA support not enabled\n");