From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id E5CF5155C82; Sun, 17 May 2026 00:02:45 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778976166; cv=none; b=UPz+Vo8F52SyVfC8fHv3VBEVIqpLGxkdwLY4L9IG84vBn/m7dNEK1l33b4lZlDm0cSeNRTkcOvCzNRAQh8M1Zx4yGJxmAm1eYCx746m7aLf77c3JhRqct8S8Fst5+6xUFp5zdh0Revae9bQM6dfyyz89AgURDea6I0j38Nh/0QU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778976166; c=relaxed/simple; bh=pFsDAZJQFVe3zG12qZeSTm+jZ6D6JDn04nnAPXgf3PI=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=dcXcI8VOgDWc9RCtj5CAsRDHHa40Mqs73xFQ+NVcxS0cQuc0m/1rrLkKEKwFqdaIL8LwHwohl53vaDVlJzAZfk7jkOehZzFNEQk0DNgUNbhzJBl5hYpRvV5lqsLb9dERgbjpyQXZcxsv8XurzbwS+8g9qM3KfZx6KtzxHGP+If8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=lJ6VFVih; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="lJ6VFVih" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 36AB3C19425; Sun, 17 May 2026 00:02:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1778976165; bh=pFsDAZJQFVe3zG12qZeSTm+jZ6D6JDn04nnAPXgf3PI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=lJ6VFVihEjkppZxTVCUiCDxe9Bw9mFzgeUJYkhmqMz/KffcfSEc0UEAhQTs/aCRuf 1tFjv+22mJlj6hqTg8s37w1ogAGlelk0QgUkpfF9l7N4dUJaespLqVuPpDeCGjfysy HR+usZ5jl6OkvhTFbsgA45RwAXpf+qpY6BVKQNQijYbyoOaYcSZlndeSTXR32xztPK EiLt2XNGQB//dW2xtdz8+3rbdNTKW88SelVfi/+KZpbylg2pBRHpAl0IQtQYAw18nK pdRjR5brVxsrmv+1N6sv88mJUsWP3gQhDhwb9lYStB2CARazdedoHAkZIs9Bsu90ES Ufo48htyCDQRw== 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, pcolberg@redhat.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 v3 06/27] rust: platform: implement Sync for Device Date: Sun, 17 May 2026 02:00:54 +0200 Message-ID: <20260517000149.3226762-7-dakr@kernel.org> X-Mailer: git-send-email 2.54.0 In-Reply-To: <20260517000149.3226762-1-dakr@kernel.org> References: <20260517000149.3226762-1-dakr@kernel.org> Precedence: bulk X-Mailing-List: driver-core@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Implement Sync for Device in addition to Device. 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 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 a74d2f6c8f02..a72ad5366931 100644 --- a/rust/kernel/platform.rs +++ b/rust/kernel/platform.rs @@ -565,3 +565,7 @@ 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