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Tue, 31 Mar 2026 03:23:59 -0700 From: Akhil R To: Vinod Koul , Frank Li , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Thierry Reding , "Jonathan Hunter" , Laxman Dewangan , Philipp Zabel , , , , CC: Akhil R , Frank Li Subject: [PATCH v6 04/10] dmaengine: tegra: Make reset control optional Date: Tue, 31 Mar 2026 15:52:57 +0530 Message-ID: <20260331102303.33181-5-akhilrajeev@nvidia.com> X-Mailer: git-send-email 2.50.1 In-Reply-To: <20260331102303.33181-1-akhilrajeev@nvidia.com> References: <20260331102303.33181-1-akhilrajeev@nvidia.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-NVConfidentiality: public Content-Transfer-Encoding: quoted-printable X-NV-OnPremToCloud: ExternallySecured X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DS3PEPF0000C380:EE_|MN0PR12MB5834:EE_ X-MS-Office365-Filtering-Correlation-Id: 0d7ccb5b-f0e0-490e-03af-08de8f0fa7d2 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|1800799024|82310400026|36860700016|376014|7416014|921020|18002099003|22082099003|56012099003; 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charset="utf-8" On Tegra264, reset is not available for the driver to control as this is handled by the boot firmware. Hence make the reset control optional and update the error message to reflect the correct error. Signed-off-by: Akhil R Reviewed-by: Frank Li --- drivers/dma/tegra186-gpc-dma.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/dma/tegra186-gpc-dma.c b/drivers/dma/tegra186-gpc-dma.c index 5948fbf32c21..a0522a992ebc 100644 --- a/drivers/dma/tegra186-gpc-dma.c +++ b/drivers/dma/tegra186-gpc-dma.c @@ -1381,10 +1381,10 @@ static int tegra_dma_probe(struct platform_device *= pdev) if (IS_ERR(tdma->base_addr)) return PTR_ERR(tdma->base_addr); =20 - tdma->rst =3D devm_reset_control_get_exclusive(&pdev->dev, "gpcdma"); + tdma->rst =3D devm_reset_control_get_optional_exclusive(&pdev->dev, "gpcd= ma"); if (IS_ERR(tdma->rst)) { return dev_err_probe(&pdev->dev, PTR_ERR(tdma->rst), - "Missing controller reset\n"); + "Failed to get controller reset\n"); } reset_control_reset(tdma->rst); =20 --=20 2.50.1