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 11B0B32B125; Sat, 12 Sep 2026 17:11:03 +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=1789233065; cv=none; b=cHeA8u9W7liRJdTs9ZI2uZLW/fskhSdzJhIYpn85TgGF1WrdXyK2brvqT2AOMAGuwD+T0Q+zE5IxlCE+40Vy2kGIg8+Yyp5DvnE498O2JsWxnyepm3yFGd1VKh8SoRjDC4ZdWJ03k/mNHmqzhJ0WL80aPhCT+E4VRd7XSGQjnLo= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789233065; c=relaxed/simple; bh=VQPymfR7XGYYD/820mPnVO57G2Nt977XmRh1mFeOGAs=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=F/+vOaM8qRafbZRcZ6o8fSLlGvGNNXPGECM849+0P+OOJ84x44u3JihXVe9W28IuOy+xS/6FMvBnXs9eFRPgobsCL1dPFX0DGyMidi049nW7+pxRyEV/VS375IQ2AAMCCN4gZ1dbkvmKIlsMdB+JoTJWbB188b6lBSpCIQSTjtU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=1bJWobQD; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="1bJWobQD" Received: by smtp.kernel.org (Postfix) with ESMTPSA id A4C6E1F000FF; Sat, 12 Sep 2026 17:11:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1789233063; bh=Y8895bTlLBGUanUMyUqIEKKO8YvcPWowoEWEKd6u32A=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=1bJWobQDCmHcx0z/ZvqYwaanvL5mTC9HaDG71hywfjcy8JvFUY15nqQIw1XAPOToG LB/b8vw+9fY6v9WG5O0Rm4sXp68kbs/2I/BYJAGx7o9kcuo5Au3hcYnPRlzFeGLU50 mPxnTSkyMaK6yIXjYVv+90u9wqPE1wtNcLc8kACI= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Cong Nguyen , Guenter Roeck Subject: [PATCH 5.15 139/935] hwmon: (max6621) fix temperature clamp range Date: Sat, 12 Sep 2026 08:52:49 +0200 Message-ID: <20260912065530.010674797@linuxfoundation.org> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260912065526.833703348@linuxfoundation.org> References: <20260912065526.833703348@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 5.15-stable review patch. If anyone has any objections, please let me know. ------------------ From: Cong Nguyen commit 24fbeb83d9b750a36da42cb835a154d80fd3d495 upstream. MAX6621_TEMP_INPUT_MIN and MAX6621_TEMP_INPUT_MAX are used to clamp the writable offset and critical thresholds. They are defined as -127000 and 128000. The driver decodes the temperature through an s8 and its own comment in max6621_read() documents an 8-bit two's complement value, whose range is -128 to +127 degrees C. The current limits therefore reject the valid -128 degrees C and accept +128 degrees C, which does not fit the 8-bit range. Correct the limits to -128000 and 127000. Fixes: 92b64580f14b ("hwmon: (max6621) Add support for Maxim MAX6621 temperature sensor") Cc: stable@vger.kernel.org Assisted-by: Claude:claude-opus-4 Signed-off-by: Cong Nguyen Link: https://lore.kernel.org/r/9d3a4f1895a47794bb359a2a32fb1ccd6a15812c.1786334038.git.congnt264@gmail.com Signed-off-by: Guenter Roeck Signed-off-by: Greg Kroah-Hartman --- drivers/hwmon/max6621.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) --- a/drivers/hwmon/max6621.c +++ b/drivers/hwmon/max6621.c @@ -17,8 +17,8 @@ #define MAX6621_DRV_NAME "max6621" #define MAX6621_TEMP_INPUT_REG_NUM 9 -#define MAX6621_TEMP_INPUT_MIN -127000 -#define MAX6621_TEMP_INPUT_MAX 128000 +#define MAX6621_TEMP_INPUT_MIN -128000 +#define MAX6621_TEMP_INPUT_MAX 127000 #define MAX6621_TEMP_ALERT_CHAN_SHIFT 1 #define MAX6621_TEMP_S0D0_REG 0x00