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X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?us-ascii?Q?hfJTeUWvFC0HEvLBfLF5GlpsDniTi/647/X2tsmDC/OICXkuorjdvV0+4Hrg?= =?us-ascii?Q?eok+1wY2+XmQUpFV9/IikuMgoRHtcVbxZuR5aA+jMEfiStaQ8+vqovZ0svj7?= =?us-ascii?Q?ixGu6oIZBMVS0/VjmDVVOY86K0NlyYq2y3pq4qzQId/TnH7UObvbnlrxdJUB?= =?us-ascii?Q?dOa4FoGieq/GlTpAk1g7A8Qp9mnOAljL2VFWpzOHQQ0Pl0MEuJbsyn/JgQZv?= =?us-ascii?Q?43J5yqJe/y4nFGAmyqFWVqG76srXOBrDHKPBpZP++StRzlApURMRbFwUyME0?= =?us-ascii?Q?t4Fjs+vxa3PV1+NXrBpYH3fceQ7vNg7EHbiU6hCr6hS1gxuLyKNQYgHfA2CF?= =?us-ascii?Q?N2TF5IEwklvmjyHiMVhBoajfSUYtj9xtoumIfv9WYxpVdbLO9LaA0IrMxf2x?= =?us-ascii?Q?uf0/0YD7no8j5TxH266RIttCs86prwxI9geDGNnvbnwamh/KgZuOdIK5Ylzj?= =?us-ascii?Q?yhZMKi/jgNNdATD9LGrlmL64LjGrm2ONNrysaCuMpqukPujmBECjOPQW1FYg?= =?us-ascii?Q?XHIjrCvb3zd3/ptsvqInZYD2E4YYpWyzzOTR/b2NyK8X5c8EQRmted41cbF8?= =?us-ascii?Q?7d/SLMJCPyiZmKdao1jLsY+fxhGGWr1R2E0cELx2aRRbavL+/mcLdlwta6Mn?= =?us-ascii?Q?1amejfGPJ7thIOEAPBm9a8RfvaxIv2DWKSy/mdHJKLoNuRM6MLvPwOQiqGMz?= =?us-ascii?Q?RYakepUw2GvL06nIIZ+UhwntQ+TuT3B9S4FiFLvQqm3T4TH+cY1gdUyddz2y?= =?us-ascii?Q?zJvPaa4Ma4Hko5z964BwRXaH9ODtiTrxl3hXm0BuSVqQCgq5AFJKOvEXlH1U?= =?us-ascii?Q?siopeld4wvvS2WMqXhHO25awIPDIqT/8WbR/8J8zgX70fGSfZEs/9xjp6hqo?= =?us-ascii?Q?wpY5SwB1e+4y0zBcnNhTK+2l90bck1fFW8KjJFgdL90z8ZrsKF1CM38yzPcv?= =?us-ascii?Q?vvwRWS5BCsIHNZivluNTSn3bO/n7ZgxIaZcfKVEX8bLU6hRvh8D8PAoLDtQ3?= =?us-ascii?Q?RZuhnoonYXjyEt3le1fvLaVsuyjiWmXHCTqSq7ID52oLPhywahF+PElpE4IA?= =?us-ascii?Q?+tU97R/xxmtacfAYAeCf0fZzwLS09vMVygSXIoKtsOenViNLZtElAIKWZTSR?= =?us-ascii?Q?RuNMpXPsdbgrkHLfqRDR+VfT+FgyPg9meBnCSpYWtl2N5TWUlNtLho3cF23b?= =?us-ascii?Q?SQm0CIlodi/Qn1+iBuBx8iO70nyW1gFbLVpWRBR4bH1Tvx///S4PiNTS0z0k?= =?us-ascii?Q?75ZjGBdm5IvDi0ER8SzBU5MwWVQOxaQFBeClSIegmRRLlbjKgj/kVe3s2+Tf?= =?us-ascii?Q?1pPTjj+h4zKIHtOh5ylZ5X4AKjmM6c/Ky1iMHGuc68R7fg2Y2fv389ZXgAdm?= =?us-ascii?Q?jEiLGj+znM9KWA2ZM3OLqr6hFpVqOyjs7v/u1K6o6AtLjSNGBRSm18e7gp/A?= =?us-ascii?Q?ol+6UDRB7ne8CRZvyQ6IOw1QlhJtiTWzBLT1cbFJ0/rk4hx8ghh2Gck96l9D?= =?us-ascii?Q?MiwmcVVkIvGXMuYaWj1zA67IpkHDrWRYxwvbw3R6S57xD2EAZFzdM84MVcyq?= =?us-ascii?Q?zLUJrkIJOzPTHEkrRBcj9iAoeoCmvbNA/okf5U/2LX6fBZ0S1cGL4tv/rurS?= =?us-ascii?Q?59cmrog5i0ST+2oOLxWJM+oTM14EYFGfpXdu6B2yMXGrsN0Ru4fDmm0/o47j?= =?us-ascii?Q?rsRgmII1YG3cjwSC2hvFb5ax7vwfcY6hxxcq6DEt8NNH/OJ8QYvxRzszEHaH?= =?us-ascii?Q?9zbW8Re3Yg=3D=3D?= X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-Network-Message-Id: 5b7a5c98-e38c-4560-7c49-08df056c0a94 X-MS-Exchange-CrossTenant-AuthSource: DM3PR12MB9416.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 29 Aug 2026 01:22:50.3797 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: V2mUNs1Wfs5IOi/r20dBmqp3/qvJlm+EsM/L7diYwJVlKSZhNlMjsxShPUIuif6oQhvwFJxw4RU1MxoFPK7Nng== X-MS-Exchange-Transport-CrossTenantHeadersStamped: MN0PR12MB6125 From: Joel Fernandes A driver that runs an interrupt self-test during probe waits for the handler to fire. wait_for_completion() has no timeout, so a broken interrupt path stalls probe indefinitely. Add a timeout variant of wait_for_completion(). Signed-off-by: Joel Fernandes [jhubbard: return the remaining jiffies] Signed-off-by: John Hubbard --- rust/kernel/sync/completion.rs | 23 ++++++++++++++++++++++- 1 file changed, 22 insertions(+), 1 deletion(-) diff --git a/rust/kernel/sync/completion.rs b/rust/kernel/sync/completion.rs index 35ff049ff078..7e8b3c1c880e 100644 --- a/rust/kernel/sync/completion.rs +++ b/rust/kernel/sync/completion.rs @@ -6,7 +6,12 @@ //! //! C header: [`include/linux/completion.h`](srctree/include/linux/completion.h) -use crate::{bindings, prelude::*, types::Opaque}; +use crate::{ + bindings, + prelude::*, + time::Jiffies, + types::Opaque, // +}; /// Synchronization primitive to signal when a certain task has been completed. /// @@ -111,4 +116,20 @@ pub fn wait_for_completion(&self) { // SAFETY: `self.as_raw()` is a pointer to a valid `struct completion`. unsafe { bindings::wait_for_completion(self.as_raw()) }; } + + /// Wait for completion of a task, with a timeout. + /// + /// This method waits for the completion of a task, or until `timeout` elapses. It is not + /// interruptible. Returns the number of jiffies left when the task completed, or [`None`] if + /// `timeout` elapsed first. + /// + /// See also [`Completion::complete_all`]. + #[inline] + pub fn wait_for_completion_timeout(&self, timeout: Jiffies) -> Option { + // SAFETY: `self.as_raw()` is a pointer to a valid `struct completion`. + match unsafe { bindings::wait_for_completion_timeout(self.as_raw(), timeout) } { + 0 => None, + remaining => Some(remaining), + } + } } -- 2.55.0