From patchwork Thu Jun 12 10:41:28 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Abhinav Ananthu X-Patchwork-Id: 896172 Received: from mail-pl1-f172.google.com (mail-pl1-f172.google.com [209.85.214.172]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 0EA3523C8D5; Thu, 12 Jun 2025 10:42:16 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.214.172 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1749724939; cv=none; b=GcXHvL6Pal9Z2qCaAUrlZZwY3nXFo0yPKyf9Hnyz8VI46ynkKHINShrBaTAY6XMxG2aCNpfbk7NBUfnNiajV6QLaaR2IjWfqMWOeFa9Hy/EMdax3KRXygCfzhyfYm54q2dVsmrYsYr9IFc7bf0Qz/nfwR5Bhh1O01qbKaPpGuDQ= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1749724939; c=relaxed/simple; bh=oFVhBP/YL0n9/tCf5ttdVuifzE71UiLOJVEiL84VSXw=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=b3kS1nrrj2zz58MfT/QHmgbgfp1QwiuBLdHtm97JgsHLr19oV08bzW+g+0thEGkXETC4+qlcAR5uNAttK6GW0r02DQI8wFHDeaYQCs1YNnUfc0+KjGpYibcJPjh99ryrQWwNtfnU7cVGsZmR/Ys+ZBVnGDHa6ue/x1CZLKLLQUU= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=OnYAvcr5; arc=none smtp.client-ip=209.85.214.172 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="OnYAvcr5" Received: by mail-pl1-f172.google.com with SMTP id d9443c01a7336-23649faf69fso7538135ad.0; Thu, 12 Jun 2025 03:42:16 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1749724936; x=1750329736; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=GybQZWZoCD/mNp4Fv4oNQX2ZSbaSeKZ922lZ4/MEtpA=; b=OnYAvcr5Xf5dXA3uUW0Vg9SVoa9cVGBZPQstWPBGyyF5863OlXakqSOrcFDQ3Dt+Sl Atb7thj2KgHpg3TApuJ4A0U2RZuchIp06tgrd97ztMIZfm62/qRV+9zDA873Ua/7GGtX LcZ8wm8+I84qH2fHHFUPT88BwFDgte31+4JO+a33iWOTjv6Eirsa+KCeYx9O7P5gxtkJ 57gE8DmD+hAXqhFr1OfLwPzRZYzvcVDAt4p5svwvOSyTkvMZv1D61eqM01jjRKGsYw6i zcyZ3vTjZjY8ugNTe9+Jc7lxlPi7wzScJKMtfv2Gi3BbDtDbVh2DncWoj5XGPVwMv3MR XQXg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1749724936; x=1750329736; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=GybQZWZoCD/mNp4Fv4oNQX2ZSbaSeKZ922lZ4/MEtpA=; b=WCAj8PcoMEGicr7UuxCx+4CyPGy34IkdFLBHnqYOo2jkeft+5eR3Su/ktnPJEtRAiD n4etWJ9ORiZM1Z7KpMWSsupjALkcziRwbJwKG5yv4KLseUSlwY/2g4mgw+gqrdtBOJAW 7AiiFARIv+i5T928CvKORPpvSRq1LqJ4hWnbHvRT9JN1NsJXiUQ2OzqRkItOcY7qIzMf UZQ7lpMFRAAfDmL0LjbFNl+N7/zyu39/TcDA7bzAU9u1nvd99eFzSryXoBTwN965Vz10 gEdYsCgNurj94za3MW81sBsJ6xFRp47pI/t7niSpKwiejQ2A2FdnVjExaEV9lAvI5qkj A+jw== X-Forwarded-Encrypted: i=1; AJvYcCUShPqibipuIZ+tnnhevPS2Tyu/7Yx5iOi81pyVdcCOavB8w2UGiMxwb9X24mRTEBjXANO1GqNyoI841Ok=@vger.kernel.org, AJvYcCWjkI3ef0EK3CZ6uSEB2sDipQm+GhK3RpV4n2jm3Leva6U1QOkPzACMR9+0RBC9X1wOrG5XbtRQ6Xk=@vger.kernel.org, AJvYcCXXy/3YlOkstsaf8HkitB0XDf0oPqm12ivaPuldBU/BZafH2FIRoo5xVeBmXpkpGwvhS+vCyHrWNVLLNT7Jtrc=@vger.kernel.org X-Gm-Message-State: AOJu0YxBrdq9C3cFCJu+QHylxwLsNITI1SlPSj0oI5mVfoewJvXxLe22 5RGUz/5J2kQhpzacuptrNtW5jTx2qwoYXOqqtnqpx2Nu8j3mR5YVusbc X-Gm-Gg: ASbGncu1efhdmNVZGb6vs99WoBPoIxrBE4chmqsSXdFa95zQW0Ik03j6D2M+w4NLsuv vrhmZJQVJ/oygyz/ZzoqACrD1P7sza1kF5D6VR1U3PQimmbUE/8h8zl597JwAvFywhxEHGUDnVD 5WxsQ97knbDa78yDixQyQ59J+1DoFayL6eglb7XuVKeWjQ5aQMHjOfzNQWC56wVGU3hYnZertoy /q1SRCfdieVnDlpQ/rxqvcgvXb5hxrU12T4TsI0z+5UoIEGmtUKdV14lYP8cPkzmzE/vg74O4xR vSIAQ1/Y/z7VZwuzkhf+/uzMaz+vNoVC2Z4Nqacsy4v7VBcmNzEM9IkBK/iIXB2c X-Google-Smtp-Source: AGHT+IH8ZWbq3NcYdfeleEGz9gzoJI5uvC922HCmGxSqEdvple5ZXtJJUZjzVkBZ/Vxr7g8UM1sPMA== X-Received: by 2002:a17:903:1a0d:b0:22d:b243:2fee with SMTP id d9443c01a7336-2364d6603b7mr33758835ad.13.1749724936128; Thu, 12 Jun 2025 03:42:16 -0700 (PDT) Received: from pop-os.. ([2401:4900:1c96:fdb4:2bbd:5e55:1c88:31fe]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2364e6d9bf4sm10781665ad.104.2025.06.12.03.42.10 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 12 Jun 2025 03:42:15 -0700 (PDT) From: Abhinav Ananthu To: "Rafael J . Wysocki" , Viresh Kumar , Miguel Ojeda , Alex Gaynor Cc: Boqun Feng , Gary Guo , =?utf-8?q?Bj=C3=B6rn_Roy_Baron?= , Benno Lossin , Andreas Hindborg , Alice Ryhl , Trevor Gross , Danilo Krummrich , linux-pm@vger.kernel.org, rust-for-linux@vger.kernel.org, linux-kernel@vger.kernel.org, Abhinav Ananthu Subject: [PATCH v2] rust : Update the bios_limit_callback to use the C FFI types #1170 Date: Thu, 12 Jun 2025 16:11:28 +0530 Message-Id: <20250612104127.10299-1-abhinav.ogl@gmail.com> X-Mailer: git-send-email 2.34.1 Precedence: bulk X-Mailing-List: linux-pm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Update the `bios_limit_callback` function to use `c_int` and `c_uint` types, which match the C ABI for the corresponding callback function. These types are imported from the prelude. This change ensures the Rust function signature exactly matches its expected C counterpart, avoiding potential issues with type mismatches in the FFI boundary. Reported-by: Miguel Ojeda Closes: https://lore.kernel.org/rust-for-linux/CANiq72=WpuGELzLbH-fxdOeJy9fiDFwatz6ynERDh=HP2z2MBw@mail.gmail.com/. Signed-off-by: Abhinav Ananthu --- rust/kernel/cpufreq.rs | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/rust/kernel/cpufreq.rs b/rust/kernel/cpufreq.rs index b0a9c6182aec..e97607ed86c2 100644 --- a/rust/kernel/cpufreq.rs +++ b/rust/kernel/cpufreq.rs @@ -1277,7 +1277,7 @@ extern "C" fn update_limits_callback(ptr: *mut bindings::cpufreq_policy) { /// Driver's `bios_limit` callback. /// /// SAFETY: Called from C. Inputs must be valid pointers. - extern "C" fn bios_limit_callback(cpu: i32, limit: *mut u32) -> kernel::ffi::c_int { + extern "C" fn bios_limit_callback(cpu: c_int, limit: *mut c_uint) -> c_int { from_result(|| { let mut policy = PolicyCpu::from_cpu(cpu as u32)?;