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 63BFA3BCD0A; Fri, 4 Sep 2026 05:56:13 +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=1788501374; cv=none; b=V3RBr0hLq4Z2qxbtUSALKh2tYIa8yVQzb4MXuPQVeiemIJ4aUV4kk338e9d6KYrz+LqWOjDHhFkB1EfLq8XHKM985SvKYO2S7D20yllTLpvewJ1T0vR++p0RM4vPGHZON2YoPS5PyF5MsLfmY3+8CXEx/IPdjXYqbP/SdEPTfsM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788501374; c=relaxed/simple; bh=Gz32rTMrtl5zTsoCX/kUW7SKUfKITmwKKHZlmq7P9VQ=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=KnTPqTmgepsROmlQo9AJ8ddFXIqP60xlk7UTZwDK8KcIndTCIpEWQKm+KkjWyW06dA2BDTL3/oNG6zgD6KtaGMSQeR+y16ja9E68+N6aMhE3Y8dHR9FbqJF3oJrB1r0WaQzponIqQ+lxi7KmqX1bhNx4nqlykJM1+0A6LMnKJQQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=1rbYGPDT; 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="1rbYGPDT" Received: by smtp.kernel.org (Postfix) with ESMTPSA id B4D761F00A3D; Fri, 4 Sep 2026 05:56:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1788501373; bh=69PnInnCVdY73lgcpVB6GR0CZwq+atmBNuPlsk/E7Q4=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=1rbYGPDTcfcDYgc2IMKQwlOshcvoCeDLFe0Uh/QXxq3+V5o+RH/3rmI+wGk5GGOYP 0fpkTcog6UGFpe1pYL9mx3X7SDuODNOI2xyDDOSbbfEAKaqcPlcm2EgC1A4Dm19JKe GNlWCBBGCb++bp2j6ZXNez6jvCJUXVlYqqFodyxg= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Cong Nguyen , Guenter Roeck Subject: [PATCH 6.18 350/552] hwmon: (max6621) fix temperature clamp range Date: Fri, 4 Sep 2026 06:58:27 +0200 Message-ID: <20260904045758.182634813@linuxfoundation.org> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260904045747.813364717@linuxfoundation.org> References: <20260904045747.813364717@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 6.18-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