{"id":2229234,"url":"http://patchwork.ozlabs.org/api/1.1/patches/2229234/?format=json","web_url":"http://patchwork.ozlabs.org/project/linux-pwm/patch/20260427221155.2144848-10-dakr@kernel.org/","project":{"id":38,"url":"http://patchwork.ozlabs.org/api/1.1/projects/38/?format=json","name":"Linux PWM development","link_name":"linux-pwm","list_id":"linux-pwm.vger.kernel.org","list_email":"linux-pwm@vger.kernel.org","web_url":"","scm_url":"","webscm_url":""},"msgid":"<20260427221155.2144848-10-dakr@kernel.org>","date":"2026-04-27T22:11:07","name":"[09/24] rust: usb: implement Sync for Device","commit_ref":null,"pull_url":null,"state":"handled-elsewhere","archived":false,"hash":"558e5df950c3b2ecb7c100ed6eb81fcd28be15a0","submitter":{"id":89037,"url":"http://patchwork.ozlabs.org/api/1.1/people/89037/?format=json","name":"Danilo Krummrich","email":"dakr@kernel.org"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/linux-pwm/patch/20260427221155.2144848-10-dakr@kernel.org/mbox/","series":[{"id":501734,"url":"http://patchwork.ozlabs.org/api/1.1/series/501734/?format=json","web_url":"http://patchwork.ozlabs.org/project/linux-pwm/list/?series=501734","date":"2026-04-27T22:10:58","name":"rust: device: Higher-Ranked Lifetime Types for device drivers","version":1,"mbox":"http://patchwork.ozlabs.org/series/501734/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/2229234/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2229234/checks/","tags":{},"headers":{"Return-Path":"\n ","X-Original-To":["incoming@patchwork.ozlabs.org","linux-pwm@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=kernel.org header.i=@kernel.org header.a=rsa-sha256\n header.s=k20201202 header.b=QCTlgvTV;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org\n (client-ip=2600:3c0a:e001:db::12fc:5321; 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a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116;\n\tt=1777327986; cv=none;\n b=PBeJ9AqXXR+ks5kkCkpnW6OH+T4MvVL/nU/IqsSfJKddfR4NOWViUBhmzy0B2YfZvP3/tJqBcsDJklHkNjm1hbFpEvTYC99hXMzFwZsVrerOm21Rtkcz5EvH0NN2Gpj3EMKaJYYtbiSYa09/BZ02bMLysAyDqBSeY680p35EqUI=","ARC-Message-Signature":"i=1; a=rsa-sha256; d=subspace.kernel.org;\n\ts=arc-20240116; t=1777327986; c=relaxed/simple;\n\tbh=sZLqtheFtbTBM6ybbYnAo9fMYpWxi0B2jumJwk9Z3cs=;\n\th=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References:\n\t MIME-Version;\n b=LTlOhoqUstGxndNnAJcbA74P9N2RvIOmWh3ASYsoIiWqkA/6OMreSP10RMPXTjbWDovb3pNl0Fz1O45ss7q6OWQ7LkHeEdPuCee+E9UEeQYBhZxdS/80pr+aenBWVvJzGtuRIYTFFCA6cTHQUMl7DNC1L3pwpJ0ZOPVWjRGT8BA=","ARC-Authentication-Results":"i=1; smtp.subspace.kernel.org;\n dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org\n header.b=QCTlgvTV; arc=none smtp.client-ip=10.30.226.201","DKIM-Signature":"v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org;\n\ts=k20201202; t=1777327984;\n\tbh=sZLqtheFtbTBM6ybbYnAo9fMYpWxi0B2jumJwk9Z3cs=;\n\th=From:To:Cc:Subject:Date:In-Reply-To:References:From;\n\tb=QCTlgvTV6FJHT3hQpDJhYJVDws5vZuwpsyLdFXn1Ezq4MjTkMvHsEuWGZDtCWUDEI\n\t h72knNyqRACPfgsu/da1PxSroKTP+FCEBidk8Yq2pPzpJqq19+tUcXcobnsGP7lc7u\n\t 0ZODNbkXz+g8diiaZxCqlQvMQYll5PdX1BHHiwtVhOhLoxhf7ccVhMZkJ3JjAsAsXy\n\t 2FUno9OVC2YQqNd4mhctCLD0je5jEB7tsswhGAdl4MZoOv4vkmsVUO5L7C1313kPzD\n\t mafFDzdfw9r/wydKN5/wUiMNGF5HrKvbhUFsP1TakxLKpDvUboStrrT7uN0BoIC7r+\n\t XnFb36DELy1vA==","From":"Danilo Krummrich ","To":"gregkh@linuxfoundation.org,\n\trafael@kernel.org,\n\tacourbot@nvidia.com,\n\taliceryhl@google.com,\n\tdavid.m.ertman@intel.com,\n\tira.weiny@intel.com,\n\tleon@kernel.org,\n\tviresh.kumar@linaro.org,\n\tm.wilczynski@samsung.com,\n\tukleinek@kernel.org,\n\tbhelgaas@google.com,\n\tkwilczynski@kernel.org,\n\tabdiel.janulgue@gmail.com,\n\trobin.murphy@arm.com,\n\tmarkus.probst@posteo.de,\n\tojeda@kernel.org,\n\tboqun@kernel.org,\n\tgary@garyguo.net,\n\tbjorn3_gh@protonmail.com,\n\tlossin@kernel.org,\n\ta.hindborg@kernel.org,\n\ttmgross@umich.edu","Cc":"driver-core@lists.linux.dev,\n\tlinux-kernel@vger.kernel.org,\n\tnova-gpu@lists.linux.dev,\n\tdri-devel@lists.freedesktop.org,\n\tlinux-pm@vger.kernel.org,\n\tlinux-pwm@vger.kernel.org,\n\tlinux-pci@vger.kernel.org,\n\trust-for-linux@vger.kernel.org,\n\tDanilo Krummrich ","Subject":"[PATCH 09/24] rust: usb: implement Sync for Device","Date":"Tue, 28 Apr 2026 00:11:07 +0200","Message-ID":"<20260427221155.2144848-10-dakr@kernel.org>","X-Mailer":"git-send-email 2.54.0","In-Reply-To":"<20260427221155.2144848-1-dakr@kernel.org>","References":"<20260427221155.2144848-1-dakr@kernel.org>","Precedence":"bulk","X-Mailing-List":"linux-pwm@vger.kernel.org","List-Id":"","List-Subscribe":"","List-Unsubscribe":"","MIME-Version":"1.0","Content-Transfer-Encoding":"8bit"},"content":"Device uses the same underlying struct usb_device as\nDevice; Bound is a zero-sized type-state marker that does not\naffect thread safety.\n\nThis is needed for drivers to store &'a usb::Device in their HRT\nprivate data while remaining Send.\n\nSigned-off-by: Danilo Krummrich \n---\n rust/kernel/usb.rs | 4 ++++\n 1 file changed, 4 insertions(+)","diff":"diff --git a/rust/kernel/usb.rs b/rust/kernel/usb.rs\nindex 9b9d3ae41087..442e456fd2d3 100644\n--- a/rust/kernel/usb.rs\n+++ b/rust/kernel/usb.rs\n@@ -467,6 +467,10 @@ unsafe impl Send for Device {}\n // allow any mutation through a shared reference.\n unsafe impl Sync for Device {}\n \n+// SAFETY: Same as `Device` -- the underlying `struct usb_device` is the same;\n+// `Bound` is a zero-sized type-state marker that does not affect thread safety.\n+unsafe impl Sync for Device {}\n+\n /// Declares a kernel module that exposes a single USB driver.\n ///\n /// # Examples\n","prefixes":["09/24"]}