From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 43C5D34AAF8; Tue, 26 Aug 2025 13:56:56 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756216617; cv=none; b=djfcO0LRhM02qjRcsEN1IxN/46+n8h/N0SXnt1TUw1QYmsGUk0heZVZE0NEx8SfmgkclrGpGU9NNRqmsgWnBp7y6FfemH8RPE5Vakw0epwxTitDIGncM9bE+WPOISm4ZDt7oFdmZIXbas4QHNSR+NUA0cfgdapqzWcrmXap+Yug= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756216617; c=relaxed/simple; bh=kPuqJmAAfPgErFI9xBm1X7W+OUSDvm7FBQNFkuz/PEk=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=j78SaB8MdB9YUE2F3ls/JPuivsEJfaxoSyidWkbSvX2vBo4o2w3JwjENsi/FeNqF/cNkQU3V4vNop2l9WBGbcbc2W8Gz9/GnTO+noZuA2sK+KcXVlrJnMKDVNMA8jJwma2OB3hmkEu1XfWAqjYitiQf6jIbffcnmaabTXBPN7Ew= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=WOzGhaKv; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="WOzGhaKv" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 6FFE7C4CEF1; Tue, 26 Aug 2025 13:56:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1756216616; bh=kPuqJmAAfPgErFI9xBm1X7W+OUSDvm7FBQNFkuz/PEk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=WOzGhaKvkACnG9S0zjPTB0dQvGxAsuBdHnZaXrZYROtTka5SgGWmtr9ub8OzYOM80 1g+knp1FASGkMz2r+qOKoSgrDdoO6SsOoqjKpYrND+KRhV1d4cFNMwGSCI2Y7CqWJt ViX16RVYNU2g6nlJd/K3PkZ2TMfNrqbAEURXDDgI= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Tim Harvey , Guenter Roeck Subject: [PATCH 5.15 479/644] hwmon: (gsc-hwmon) fix fan pwm setpoint show functions Date: Tue, 26 Aug 2025 13:09:30 +0200 Message-ID: <20250826110958.356190310@linuxfoundation.org> X-Mailer: git-send-email 2.50.1 In-Reply-To: <20250826110946.507083938@linuxfoundation.org> References: <20250826110946.507083938@linuxfoundation.org> User-Agent: quilt/0.68 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: Tim Harvey commit 9c62e2282900332c8b711d9f9e37af369a8ef71b upstream. The Linux hwmon sysfs API values for pwmX_auto_pointY_pwm represent an integer value between 0 (0%) to 255 (100%) and the pwmX_auto_pointY_temp represent millidegrees Celcius. Commit a6d80df47ee2 ("hwmon: (gsc-hwmon) fix fan pwm temperature scaling") properly addressed the incorrect scaling in the pwm_auto_point_temp_store implementation but erroneously scaled the pwm_auto_point_pwm_show (pwm value) instead of the pwm_auto_point_temp_show (temp value) resulting in: # cat /sys/class/hwmon/hwmon0/pwm1_auto_point6_pwm 25500 # cat /sys/class/hwmon/hwmon0/pwm1_auto_point6_temp 4500 Fix the scaling of these attributes: # cat /sys/class/hwmon/hwmon0/pwm1_auto_point6_pwm 255 # cat /sys/class/hwmon/hwmon0/pwm1_auto_point6_temp 45000 Fixes: a6d80df47ee2 ("hwmon: (gsc-hwmon) fix fan pwm temperature scaling") Cc: stable@vger.kernel.org Signed-off-by: Tim Harvey Link: https://lore.kernel.org/r/20250718200259.1840792-1-tharvey@gateworks.com Signed-off-by: Guenter Roeck Signed-off-by: Greg Kroah-Hartman --- drivers/hwmon/gsc-hwmon.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) --- a/drivers/hwmon/gsc-hwmon.c +++ b/drivers/hwmon/gsc-hwmon.c @@ -65,7 +65,7 @@ static ssize_t pwm_auto_point_temp_show( return ret; ret = regs[0] | regs[1] << 8; - return sprintf(buf, "%d\n", ret * 10); + return sprintf(buf, "%d\n", ret * 100); } static ssize_t pwm_auto_point_temp_store(struct device *dev, @@ -100,7 +100,7 @@ static ssize_t pwm_auto_point_pwm_show(s { struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); - return sprintf(buf, "%d\n", 255 * (50 + (attr->index * 10))); + return sprintf(buf, "%d\n", 255 * (50 + (attr->index * 10)) / 100); } static SENSOR_DEVICE_ATTR_RO(pwm1_auto_point1_pwm, pwm_auto_point_pwm, 0);