From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 70B82372684; Thu, 21 May 2026 23:40:02 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779406807; cv=none; b=U0XUF/KoIZb3YDxpTnCRSiUvKcv+p+ZQdIOjH5BSQh6RJJHSqZwgRq91YjuUmKoqwDEfe8cVIaSG57HUIJFdD1m2whVbUvFe+EI60e6PTE4gKT1qLSeoVzBkSUIrr66YnmQ0jZdXAWU9j/ezqNU6qChlLlOu41Dx9CcVZFhs9S0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779406807; c=relaxed/simple; bh=6bmHwQfqzUdZCNWXIzrI0o/hWjRhRCEEbytqokdPs9g=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=JHrQDaWJu8LMwzUPJiQJe5182fCD54czoJldfKAeT72YJuOgaOdFy/VETazAlWCBeja5WFknA4xhH5rpqKIy6t03SXFZsyDQZeWwAi0pYNFcxrd2QZ+TMojCGX617GpG8wwnH6WfyO6s8uSwy6fScyLDOIM5q28+v7nGhCw4D+A= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=h3Mxnpbc; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="h3Mxnpbc" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7B64C1F00A3B; Thu, 21 May 2026 23:39:54 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1779406800; bh=DC62fw7JzD1U4MkR4ipXU/wF9jbNm3QIotQzvyRxdaQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=h3MxnpbcG3xWduuC6xAGxuv0HSg4TkMTQ0SebM/4Ct1eDr9HphgDjzdiW4noIVcuM jN8NuHh1qYeeS873aE8AUQelobDdVW+U85QqhRPXwN+3CkcHySG9PtRLQDAfcQEyX3 KQTccLlRMvyqUobI9HpVPtbl09hOHaEOvzIxNzfzfGqN9R0OtnYPffvXUIeUbQlWX6 mNFuHmRtC1hJvuvdkka6Bi1BBHcAPM8T4PA0ICjFD4XyEZANQOi4OdsocvDIveO9mr XpbctJ2g1SeV9akfJ6O8SLDR34Xkre5OhKOE893j5q6O+VFsSzXwPjcIDd/HoZqT0M haHASIf1W8Ayw== 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 v4 06/27] rust: platform: implement Sync for Device Date: Fri, 22 May 2026 01:34:32 +0200 Message-ID: <20260521233501.1191842-7-dakr@kernel.org> X-Mailer: git-send-email 2.54.0 In-Reply-To: <20260521233501.1191842-1-dakr@kernel.org> References: <20260521233501.1191842-1-dakr@kernel.org> Precedence: bulk X-Mailing-List: linux-pm@vger.kernel.org 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. Reviewed-by: Alexandre Courbot Reviewed-by: Gary Guo 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 975b22ffe5db..106a5ed57ea6 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