From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 43B69CD3439 for ; Wed, 6 May 2026 21:52:04 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id A20B310EEB7; Wed, 6 May 2026 21:52:03 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.b="QzKG5z+l"; dkim-atps=neutral Received: from sea.source.kernel.org (sea.source.kernel.org [172.234.252.31]) by gabe.freedesktop.org (Postfix) with ESMTPS id 7CDAE10EEB7 for ; Wed, 6 May 2026 21:52:02 +0000 (UTC) Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by sea.source.kernel.org (Postfix) with ESMTP id 64D8E4383F; Wed, 6 May 2026 21:52:02 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 073C9C2BCB2; Wed, 6 May 2026 21:51:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1778104322; bh=QpY7OeVzdag9i3s1zOXGyUJCcDhM97iVsWF8/eXysoQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=QzKG5z+l99CxfwRBalOq5RgpE7Kw8jLaOSMQ4Wnr150LD7wUyxnH7TaDhUPmckLRH cayED4QHWEkfYgPB3MPt3uOtPlSTAoF9KuPByKpr34thsdjPAZJ9F8J7S1yfkJ/YwD rDfSaSaoV5M6I1JodfESH8b1njNPE515MU9y8+kboGEcOrTTErBn0eA66NN1ZI3xlP M3C89VzSYUVwc1NMH+RSxor1SQFZBww8uWMNFQPgTntbxw5s/uO8UbV2BuEOGZt0Ta ZE8t4MvpK2Snzp6e5k9cJhxZqN2c6Ue8lijOkcCHIvm4NODpmTn/eAiPJqJa4K/Re2 vKIn3jrgQ7oyw== From: Danilo Krummrich To: gregkh@linuxfoundation.org, rafael@kernel.org, acourbot@nvidia.com, aliceryhl@google.com, david.m.ertman@intel.com, ira.weiny@intel.com, leon@kernel.org, viresh.kumar@linaro.org, m.wilczynski@samsung.com, ukleinek@kernel.org, bhelgaas@google.com, kwilczynski@kernel.org, abdiel.janulgue@gmail.com, robin.murphy@arm.com, markus.probst@posteo.de, ojeda@kernel.org, boqun@kernel.org, gary@garyguo.net, bjorn3_gh@protonmail.com, lossin@kernel.org, a.hindborg@kernel.org, tmgross@umich.edu, igor.korotin@linux.dev, daniel.almeida@collabora.com Cc: driver-core@lists.linux.dev, linux-kernel@vger.kernel.org, nova-gpu@lists.linux.dev, dri-devel@lists.freedesktop.org, linux-pm@vger.kernel.org, linux-pwm@vger.kernel.org, linux-pci@vger.kernel.org, rust-for-linux@vger.kernel.org, Danilo Krummrich Subject: [PATCH v2 06/25] rust: platform: implement Sync for Device Date: Wed, 6 May 2026 23:50:42 +0200 Message-ID: <20260506215113.851360-7-dakr@kernel.org> X-Mailer: git-send-email 2.54.0 In-Reply-To: <20260506215113.851360-1-dakr@kernel.org> References: <20260506215113.851360-1-dakr@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Device uses the same underlying struct platform_device as Device; Bound is a zero-sized type-state marker that does not affect thread safety. This is needed for drivers to store &'bound platform::Device in their HRT private data while remaining Send. Signed-off-by: Danilo Krummrich --- rust/kernel/platform.rs | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/rust/kernel/platform.rs b/rust/kernel/platform.rs index 506731a648c2..aec26307ae68 100644 --- a/rust/kernel/platform.rs +++ b/rust/kernel/platform.rs @@ -564,3 +564,7 @@ unsafe impl Send for Device {} // SAFETY: `Device` can be shared among threads because all methods of `Device` // (i.e. `Device) are thread safe. unsafe impl Sync for Device {} + +// SAFETY: Same as `Device` -- the underlying `struct platform_device` is the same; +// `Bound` is a zero-sized type-state marker that does not affect thread safety. +unsafe impl Sync for Device {} -- 2.54.0