From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from sender4-pp-f112.zoho.com (sender4-pp-f112.zoho.com [136.143.188.112]) (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 A49D3EACD; Wed, 10 Sep 2025 17:29:12 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=pass smtp.client-ip=136.143.188.112 ARC-Seal:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1757525354; cv=pass; b=WwE6twAMB2gc71w88XAKGL98kskyEf4sBWIc/4rpHqjUiEB3/XGJjYOsYC58N6BzWGt/Y1cAqWw1597haTUbM+9lW/Kf1EC4YPQmKIChg9e7EdeoH1/jyLYfSUrGwimzR+WIBjtj2YeVBNF0valNVdk6g0HCwk4YcyFvlIgrGI0= ARC-Message-Signature:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1757525354; c=relaxed/simple; bh=3SXZejCfWVgYELeZNZ6tEH96Xgzru2GpfUTq6rBcDW4=; h=From:Subject:Date:Message-Id:MIME-Version:Content-Type:To:Cc; b=nN8G+LDo425WaOb9isNGSV97yiWj0b4siCuSvOWwwPScu2IxERtU8o6OSVgYMFeCnFtYwLcoSX4gG4YhpIY4dSQBkv/0vooCa/tuJJMqbjMAII0awLlhgW2QBu7hG5fxs5YGqExIsnx10/A4pD0Sako49FeSFTM5/eEzVwjXk1I= ARC-Authentication-Results:i=2; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=collabora.com; spf=pass smtp.mailfrom=collabora.com; dkim=pass (1024-bit key) header.d=collabora.com header.i=daniel.almeida@collabora.com header.b=Lr42V2xt; arc=pass smtp.client-ip=136.143.188.112 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=collabora.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=collabora.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=collabora.com header.i=daniel.almeida@collabora.com header.b="Lr42V2xt" ARC-Seal: i=1; a=rsa-sha256; t=1757525332; cv=none; d=zohomail.com; s=zohoarc; b=UDON6ZwaIFwEQwBbfsjzK7HTqH7JhEcLzbBCpa2W7OITu52mJ+dqFl0IVIku8moRyf2hks+Zb+4mlB8P4UsRpMaq6vbQztkzDQ/0fsXfkb+YMlLCPlJ9M1wvcL+vYzBEqopvxTzwa9irwEBcpF9sCEdtCtH+W25z4z0FSbcguro= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1757525332; h=Content-Type:Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:MIME-Version:Message-ID:Subject:Subject:To:To:Message-Id:Reply-To; bh=k/PM9luG5Lz9YHA8zN2aF7NFM+1kFiTLyLGf1qeGQk0=; b=EU0vtDbQmzlZQzDNNSZcDfzhHK6pGxIg92hFpW5GS7lRqKTN0p+9i9BxW050E3yfWWCRJGnWPEUPPHiPnqKRvVpDmxS7/3tTL//Z8FDp7HqISA7BpsWxKJqF+Cvkm+g4UBePfbJWJlBG6rk1qPAO4ko6Q4V/bJGZtU6Qg6TGuAY= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass header.i=collabora.com; spf=pass smtp.mailfrom=daniel.almeida@collabora.com; dmarc=pass header.from= DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; t=1757525332; s=zohomail; d=collabora.com; i=daniel.almeida@collabora.com; h=From:From:Subject:Subject:Date:Date:Message-Id:Message-Id:MIME-Version:Content-Type:Content-Transfer-Encoding:To:To:Cc:Cc:Reply-To; bh=k/PM9luG5Lz9YHA8zN2aF7NFM+1kFiTLyLGf1qeGQk0=; b=Lr42V2xtApk0mo7gArgO3wxVmOY36f73s1jlC28wY9qr/aFsSmdDMxsHrl6Dz2a5 ngM16Ez/1HkjdiHAbylBozhj1zNh52J91wzB0iaunvUZ/YUodI1sZaRrAaUnU3bQy6H VjEW3nwPTiHy1FF/lpFGSydJhym8+e8nvov7xHb8= Received: by mx.zohomail.com with SMTPS id 1757525330126752.3640853365222; Wed, 10 Sep 2025 10:28:50 -0700 (PDT) From: Daniel Almeida Subject: [PATCH v2 0/2] Clk improvements for 6.18 Date: Wed, 10 Sep 2025 14:28:26 -0300 Message-Id: <20250910-clk-type-state-v2-0-1b97c11bb631@collabora.com> Precedence: bulk X-Mailing-List: linux-pm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit X-B4-Tracking: v=1; b=H4sIADq1wWgC/53OvQ6DIBSG4VsxzD0N0OBPJ++jcTjCsZKqGCCmx njvRZcO3Tq+w/fk21ggbymwe7YxT4sN1k0p5CVjusfpSWBNaia5VLziFejhBXGdCULESKC5QCy MUUoYlkazp86+T/DRpO68GyH2nvDLFPKHWQQIKKu8VbdS5F3R1toNA7bO41W78ZB7G6Lz6/l0k Yf/t9bs+/4BA3y5+/oAAAA= X-Change-ID: 20250909-clk-type-state-c01aa7dd551d To: Michael Turquette , Stephen Boyd , Miguel Ojeda , Alex Gaynor , Boqun Feng , Gary Guo , =?utf-8?q?Bj=C3=B6rn_Roy_Baron?= , Benno Lossin , Andreas Hindborg , Alice Ryhl , Trevor Gross , Danilo Krummrich , "Rafael J. Wysocki" , Viresh Kumar Cc: linux-clk@vger.kernel.org, rust-for-linux@vger.kernel.org, linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org, Daniel Almeida X-Mailer: b4 0.14.2 X-ZohoMailClient: External This series contains a few improvements that will be soon needed by drivers: Patch 1 implements Send and Sync for Clocks, as a raw pointer precludes the compiler from automatically implementing these traits. This will lead to an otherwise unnecessary unsafe implementation of Send and Sync for all drivers that use kernel::clk::Clk. It was included in this series as it would otherwise conflict with patch 2. Patch 2 implements the same typestate pattern that has been used successfully for Regulators. This is needed because otherwise drivers will be responsible for unpreparing and disabling clocks themselves and ultimately handling the reference counts on their own. This is undesirable. The patch automatically encodes this information using the type system so that no misuse can occur. --- Changes in v2: - Added Alice's patch as patch 1, since it is a dependency. - Added devm helpers (like we did for Regulator) - Fixed missing clk_put() call in Drop (Danilo) - Fixed missing parenthesis and wrong docs (Viresh) - Removed extra "dev" parameter from "shutdown" example (Danilo) - Removed useless type annotation from example (Danilo) - Link to v1: https://lore.kernel.org/rust-for-linux/20250729-clk-type-state-v1-1-896b53816f7b@collabora.com/#r --- Alice Ryhl (1): rust: clk: implement Send and Sync Daniel Almeida (1): rust: clk: use the type-state pattern drivers/cpufreq/rcpufreq_dt.rs | 2 +- rust/kernel/clk.rs | 405 ++++++++++++++++++++++++++++------------- rust/kernel/cpufreq.rs | 8 +- 3 files changed, 283 insertions(+), 132 deletions(-) --- base-commit: 76eeb9b8de9880ca38696b2fb56ac45ac0a25c6c change-id: 20250909-clk-type-state-c01aa7dd551d Best regards, -- Daniel Almeida