linux-kernel - Re: [PATCH 2/3] hwmon: (cros_ec) Add reading target fan RPM function

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Message-ID: <202503141908.rieksBce-lkp@intel.com>
Date: Fri, 14 Mar 2025 19:25:43 +0800
From: kernel test robot <lkp@...el.com>
To: Sung-Chi Li <lschyi@...omium.org>,
	Thomas Weißschuh <thomas@...ssschuh.net>,
	Jean Delvare <jdelvare@...e.com>,
	Guenter Roeck <linux@...ck-us.net>,
	Benson Leung <bleung@...omium.org>
Cc: oe-kbuild-all@...ts.linux.dev, chrome-platform@...ts.linux.dev,
	linux-hwmon@...r.kernel.org, linux-kernel@...r.kernel.org,
	Sung-Chi Li <lschyi@...omium.org>
Subject: Re: [PATCH 2/3] hwmon: (cros_ec) Add reading target fan RPM function

Hi Sung-Chi,

kernel test robot noticed the following build warnings:

[auto build test WARNING on 9fbcd7b32bf7c0a5bda0f22c25df29d00a872017]

url:    https://github.com/intel-lab-lkp/linux/commits/Sung-Chi-Li/hwmon-cros_ec-Add-setting-target-fan-RPM-function/20250313-125018
base:   9fbcd7b32bf7c0a5bda0f22c25df29d00a872017
patch link:    https://lore.kernel.org/r/20250313-extend_ec_hwmon_fan-v1-2-5c566776f2c4%40chromium.org
patch subject: [PATCH 2/3] hwmon: (cros_ec) Add reading target fan RPM function
config: x86_64-randconfig-121-20250314 (https://download.01.org/0day-ci/archive/20250314/202503141908.rieksBce-lkp@intel.com/config)
compiler: gcc-12 (Debian 12.2.0-14) 12.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250314/202503141908.rieksBce-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202503141908.rieksBce-lkp@intel.com/

sparse warnings: (new ones prefixed by >>)
>> drivers/hwmon/cros_ec_hwmon.c:48:18: sparse: sparse: cast to restricted __le32

vim +48 drivers/hwmon/cros_ec_hwmon.c

    38	
    39	static int cros_ec_hwmon_read_fan_target(struct cros_ec_device *cros_ec, u8 index, int32_t *speed)
    40	{
    41		int ret;
    42		struct ec_response_pwm_get_fan_rpm r;
    43	
    44		ret = cros_ec_cmd(cros_ec, 0, EC_CMD_PWM_GET_FAN_TARGET_RPM, NULL, 0, &r, sizeof(r));
    45		if (ret < 0)
    46			return ret;
    47	
  > 48		*speed = le32_to_cpu(r.rpm);
    49		return 0;
    50	}
    51	

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki