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GET /api/1.2/patches/2234297/?format=api
{ "id": 2234297, "url": "http://patchwork.ozlabs.org/api/1.2/patches/2234297/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-tegra/patch/20260507154557.2082697-2-kkartik@nvidia.com/", "project": { "id": 21, "url": "http://patchwork.ozlabs.org/api/1.2/projects/21/?format=api", "name": "Linux Tegra Development", "link_name": "linux-tegra", "list_id": "linux-tegra.vger.kernel.org", "list_email": "linux-tegra@vger.kernel.org", "web_url": null, "scm_url": null, "webscm_url": null, "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<20260507154557.2082697-2-kkartik@nvidia.com>", "list_archive_url": null, "date": "2026-05-07T15:45:54", "name": "[1/4] clocksource/drivers/timer-tegra186: Fix support for multiple watchdog instances", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "dff15e421512c2dccde77b9cc2780d8c08fc9021", "submitter": { "id": 83016, "url": "http://patchwork.ozlabs.org/api/1.2/people/83016/?format=api", "name": "Kartik Rajput", "email": "kkartik@nvidia.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/linux-tegra/patch/20260507154557.2082697-2-kkartik@nvidia.com/mbox/", "series": [ { "id": 503205, "url": "http://patchwork.ozlabs.org/api/1.2/series/503205/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-tegra/list/?series=503205", "date": "2026-05-07T15:45:55", "name": "Add support for Kernel WDT", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/503205/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2234297/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2234297/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "\n <linux-tegra+bounces-14295-incoming=patchwork.ozlabs.org@vger.kernel.org>", "X-Original-To": [ "incoming@patchwork.ozlabs.org", "linux-tegra@vger.kernel.org" ], "Delivered-To": "patchwork-incoming@legolas.ozlabs.org", "Authentication-Results": [ "legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=Nvidia.com header.i=@Nvidia.com header.a=rsa-sha256\n header.s=selector2 header.b=f4foOIos;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org\n (client-ip=2600:3c04:e001:36c::12fc:5321; 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pr=C", "From": "Kartik Rajput <kkartik@nvidia.com>", "To": "<daniel.lezcano@kernel.org>, <tglx@kernel.org>, <wim@linux-watchdog.org>,\n\t<linux@roeck-us.net>, <thierry.reding@kernel.org>, <jonathanh@nvidia.com>,\n\t<kkartik@nvidia.com>, <linux-watchdog@vger.kernel.org>,\n\t<linux-kernel@vger.kernel.org>, <linux-tegra@vger.kernel.org>", "CC": "<stable@vger.kernel.org>", "Subject": "[PATCH 1/4] clocksource/drivers/timer-tegra186: Fix support for\n multiple watchdog instances", "Date": "Thu, 7 May 2026 21:15:54 +0530", "Message-ID": "<20260507154557.2082697-2-kkartik@nvidia.com>", "X-Mailer": "git-send-email 2.43.0", "In-Reply-To": "<20260507154557.2082697-1-kkartik@nvidia.com>", "References": "<20260507154557.2082697-1-kkartik@nvidia.com>", "Precedence": "bulk", "X-Mailing-List": "linux-tegra@vger.kernel.org", "List-Id": "<linux-tegra.vger.kernel.org>", "List-Subscribe": "<mailto:linux-tegra+subscribe@vger.kernel.org>", "List-Unsubscribe": "<mailto:linux-tegra+unsubscribe@vger.kernel.org>", "MIME-Version": "1.0", "Content-Transfer-Encoding": "8bit", "Content-Type": "text/plain", "X-NV-OnPremToCloud": "ExternallySecured", "X-EOPAttributedMessage": "0", "X-MS-PublicTrafficType": "Email", "X-MS-TrafficTypeDiagnostic": "BL02EPF0001A0FB:EE_|PH7PR12MB7212:EE_", "X-MS-Office365-Filtering-Correlation-Id": "090e7576-f8a9-47ed-1e6e-08deac4fdafe", "X-MS-Exchange-SenderADCheck": "1", "X-MS-Exchange-AntiSpam-Relay": "0", "X-Microsoft-Antispam": "\n\tBCL:0;ARA:13230040|36860700016|376014|82310400026|1800799024|921020|18002099003|22082099003|56012099003;", "X-Microsoft-Antispam-Message-Info": "\n\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", "X-Forefront-Antispam-Report": "\n\tCIP:216.228.118.232;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:mail.nvidia.com;PTR:dc7edge1.nvidia.com;CAT:NONE;SFS:(13230040)(36860700016)(376014)(82310400026)(1800799024)(921020)(18002099003)(22082099003)(56012099003);DIR:OUT;SFP:1101;", "X-MS-Exchange-AntiSpam-MessageData-ChunkCount": "1", "X-MS-Exchange-AntiSpam-MessageData-0": "\n\tNrxJZxwTX0oHysKpoZnhdRPW9s33CXHk/kuO5IAHoOneuB4cv/mXgbFV1wft8q45IfC2nznrSWREf9m43QTkDbeJFQGFTVrjCGnRYbFkyo46VddbffoRUgaq5aW2jeVYSTKnayMrFpmlLJeiGJxasKdqK2eFkRcaDEIjt0vSR3uBVZh8/xZesE8fry0kkulNC7uYdO5KnmsguJpVyFqgg17oqzqYYkvqed60No6pefLQZ3Pn+DcuHRsWvU5P9pqG5v9lR4ridoKTkJieznTWwcp3xuFlBt6i7JWK57b+A3qEVT3faTCnPKoy+Y6Krp3/SyWXWuHOKydFOlV4JXxZaJkvSdnLz/Vd7Tl8tLR0vuwmtUGK/fvQJdneOmeuLiSx9o+rg+EQfO7xJ1nIQ4qNJb28Lkj6b7QCwOjN5WqTuSgwU1Saw56mTLOYEUlYyt6C", "X-OriginatorOrg": "Nvidia.com", "X-MS-Exchange-CrossTenant-OriginalArrivalTime": "07 May 2026 15:46:50.7910\n (UTC)", "X-MS-Exchange-CrossTenant-Network-Message-Id": "\n 090e7576-f8a9-47ed-1e6e-08deac4fdafe", "X-MS-Exchange-CrossTenant-Id": "43083d15-7273-40c1-b7db-39efd9ccc17a", "X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp": "\n TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[216.228.118.232];Helo=[mail.nvidia.com]", "X-MS-Exchange-CrossTenant-AuthSource": "\n\tBL02EPF0001A0FB.namprd03.prod.outlook.com", "X-MS-Exchange-CrossTenant-AuthAs": "Anonymous", "X-MS-Exchange-CrossTenant-FromEntityHeader": "HybridOnPrem", "X-MS-Exchange-Transport-CrossTenantHeadersStamped": "PH7PR12MB7212" }, "content": "Tegra SoCs support multiple watchdogs; currently only one (WDT0) is\nused. When multiple watchdogs are registered, tegra186_wdt_enable()\noverwrites the TKEIE(x) register, discarding any existing watchdog\ninterrupt enable bits. As a result, enabling one watchdog inadvertently\ndisables interrupts for the others.\n\nFix this by preserving the existing TKEIE(x) value and updating it\nusing a read-modify-write sequence.\n\nFixes: 42cee19a9f83 (\"clocksource: Add Tegra186 timers support\")\nCc: stable@vger.kernel.org\nSigned-off-by: Kartik Rajput <kkartik@nvidia.com>\n---\n drivers/clocksource/timer-tegra186.c | 3 ++-\n 1 file changed, 2 insertions(+), 1 deletion(-)", "diff": "diff --git a/drivers/clocksource/timer-tegra186.c b/drivers/clocksource/timer-tegra186.c\nindex 355558893e5f..bfe16d2d5104 100644\n--- a/drivers/clocksource/timer-tegra186.c\n+++ b/drivers/clocksource/timer-tegra186.c\n@@ -149,7 +149,8 @@ static void tegra186_wdt_enable(struct tegra186_wdt *wdt)\n \tu32 value;\n \n \t/* unmask hardware IRQ, this may have been lost across powergate */\n-\tvalue = TKEIE_WDT_MASK(wdt->index, 1);\n+\tvalue = readl(tegra->regs + TKEIE(wdt->tmr->hwirq));\n+\tvalue |= TKEIE_WDT_MASK(wdt->index, 1);\n \twritel(value, tegra->regs + TKEIE(wdt->tmr->hwirq));\n \n \t/* clear interrupt */\n", "prefixes": [ "1/4" ] }