From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pf1-f170.google.com (mail-pf1-f170.google.com [209.85.210.170]) (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 919D22BD11 for ; Sat, 18 Apr 2026 03:46:32 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.210.170 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776483993; cv=none; b=IlppZBw2LIUFl6se2JJdBYalDLdRnvxTOOOepFYVbR8b34gq0Ugfni0JZuD7ubbfvHGh0ApnqtoKoSdAv/JazyLTCSVDuI043OUj3zU+5X/551C26FDP2F8/a9OG3u3z6Ynz9F54Rj2hiNK/m0FaAs/QSdVnT98W/mwlmmGJVRU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776483993; c=relaxed/simple; bh=mOVNQ5CBl96THq01qdC/kBlx9aK/muQqKsQcHkjfUpk=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=UCNTgKZhG2Qy2MVBmX4zQtrzb1z7jFM4cL0qfk1iCR3LXKzssZy9OI73fcUTAbcUjTwJfssMkwD7t86cbCinO3uUL9NfSWEGasiTq+sP3CNu7geADoBcwFtODWF9Jne9vyGxiiieKYue9FyExnUEAR8/ilCapx/YfZVz5zv+b5I= 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=bNGZM2Y2; arc=none smtp.client-ip=209.85.210.170 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="bNGZM2Y2" Received: by mail-pf1-f170.google.com with SMTP id d2e1a72fcca58-82f431c0ab6so632872b3a.0 for ; Fri, 17 Apr 2026 20:46:32 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20251104; t=1776483992; x=1777088792; 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=lA3vpovy9PX6td0nEMgnoxug44S4JB3dgtcUcALlzoA=; b=bNGZM2Y2IaMJN4IUyM/pCVokRJIYw7J9iC7aJbkmkXkc1i9ztlcUlm5gSSscVz8EMV KKF+P+AkOH5ITF5ZxWsZxMeqbaIYKRkwm6J3Lg0XgBq/VFQuwDBpvPTbszX8UQU6e3Li oc26Zjbh/fqFxLH+c+K9WB7kzeBTSOcwQ8FG4TOIi1fZG1q+jNSq6WbPrg8X/wKOADTv o/fHOrJb01+g4Gq+9IhGxhflJUzI+TRzycq2c5NcGCMu/S95KEBIVzMWGzq9Wq0esEgu 1sDiIzj9SyelTx4CC7UohJsvtIpi7b8ut8yAFKYQtgMWgGCM7/osstv9EecxLgU2L+bR jgMw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1776483992; x=1777088792; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-gg:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to; bh=lA3vpovy9PX6td0nEMgnoxug44S4JB3dgtcUcALlzoA=; b=Z970etxkqoMQsn/NWRciBre551XwZquCjKOBBAnQT5iLPWn3iSR/mNoit/3TzmIVz7 KMsDbILZv6wVvYRKO36Zcaa+9wEobD+fbyCsSDWzTyz6Dt4RI3Eu73ifMISX8nnEX9lD IRjqO+vFsAOOClJF98rhXdw6X6RR6mbVlqkm2gGR3UjsAfw5sJ8qZb2F0Bd+2JQkaRuK TJaoc2HmntDPwjdoFDLGeM09mi01vNnLTH0cJmWsyvPUdl1ks9da6w/xFWaJtHOWP3dy ztyQ+h0Dwr4jDuY6jkwFaiEIPP/Bxjl0InyM0USqjp1zwNABLQ2haAM3a0g7i0VI/5/r qe4A== X-Forwarded-Encrypted: i=1; AFNElJ/I2qJ5Gl9nwvaOCLAiQxOi5HdDzLyM0VyIcmnkQ50/OiZP4znwnYGN2nWh/EQfJArENnLMYZxMCWVclQY=@vger.kernel.org X-Gm-Message-State: AOJu0Yz93aYDhwGyLJakVKGXL4AC/7kjyUF5QhPMz14DH/ivU5ReE9fw O5mmVEgk0M0iR+3kuFPaqQFJzQGaxOkDSO91b8UmtiOw2HofadGUZCK6 X-Gm-Gg: AeBDiesttKU3aZKMF4g4ZZg1afTGWTpOVI4kUeXLZZWbQKdGGu7qT5SixaJkoK60/Ip 0BlJ8PVXQTfu30p62gZuhe3QvxpqbPPTV2q9SiYmAO6MO5ciOA9mmDZUqOJGJPa761J1gCYg7/x md3M4tQxl/OfTQyu3t4q3N2IBdcC7kjCHxll0sSB1RVX5yTxFInKpy7celknYGHhTcT2qhRGE0B drEFMBqWMrDAAu3yUgOJ+q29yOmNqgacOkejdTXPkjm8qvVhtcge9BDNSzN+ZaC9RCGePcL68ze a/580Undjxk5WwTu5827nB37rmnzseST0B4syK4j/RFcAPinIoo8CZxdzR0UrCcRl8KtFpW6ykC mYARAPs8OQlTEgSFL4vawBpsDM0Q+AowqPLLB0eB1gM6QVNKL3xQZdaTUVcOpzDEN5DpIC1NFN3 KgJByJtcVfhWIwWWMbdVEBsFbZMGyBVWWxCSX93h2f8+Ou2Z9auLewZvUMQYMR5Dnq+iS5duvuL w== X-Received: by 2002:a05:6a00:4408:b0:82c:6b1b:7ad4 with SMTP id d2e1a72fcca58-82f8c84d3aamr5554707b3a.3.1776483991874; Fri, 17 Apr 2026 20:46:31 -0700 (PDT) Received: from tabrez-VivoBook-ASUSLaptop-X513UA-KM513UA.. ([27.4.62.72]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-82f8ec05391sm3549074b3a.56.2026.04.17.20.46.29 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 17 Apr 2026 20:46:31 -0700 (PDT) From: Tabrez Ahmed To: linux@roeck-us.net Cc: linux-hwmon@vger.kernel.org, linux-kernel@vger.kernel.org, shuah@kernel.org, me@brighamcampbell.com, Tabrez Ahmed Subject: [PATCH v3 0/3] hwmon: (ads7871) Modernize and fix DMA safety Date: Sat, 18 Apr 2026 09:15:58 +0530 Message-ID: <20260418034601.90226-1-tabreztalks@gmail.com> X-Mailer: git-send-email 2.43.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit This series modernizes the ads7871 driver by migrating it to the hwmon_device_register_with_info() API and moving the SPI transfer buffer into the driver's private data structure to ensure it is DMA-safe. Changes in v3: - Added Patch 1 to fix a pre-existing Endianness bug in the 16-bit register read logic, flagged by Sashiko AI during v2 review. - Fixed multiple formatting and alignment issues caught by checkpatch --strict, as requested by Guenter. - Added "While at it, fix checkpatch violations" to Patch 2 commit message. Changes in v2: - Dropped custom mutex in favor of native hwmon core serialization. - Split API migration and DMA fix into separate, logical patches. - Corrected output scaling and sign extension to meet hwmon ABI. Tabrez Ahmed (3): hwmon: (ads7871) Fix endianness bug in 16-bit register reads hwmon: (ads7871) Convert to hwmon_device_register_with_info hwmon: (ads7871) Use DMA-safe buffer for SPI writes Tabrez Ahmed (3): hwmon: (ads7871) Fix endianness bug in 16-bit register reads hwmon: (ads7871) Convert to hwmon_device_register_with_info hwmon: (ads7871) Use DMA-safe buffer for SPI writes drivers/hwmon/ads7871.c | 118 +++++++++++++++++++++++----------------- 1 file changed, 68 insertions(+), 50 deletions(-) -- 2.43.0