linux-kernel - Re: [PATCH v3 2/2] thermal: add a virtual sensor to aggregate temperatures

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Date:   Tue, 9 Nov 2021 10:32:34 +0800
From:   kernel test robot <lkp@...el.com>
To:     Alexandre Bailon <abailon@...libre.com>, rafael@...nel.org,
        rui.zhang@...el.com, daniel.lezcano@...aro.org, amitk@...nel.org
Cc:     kbuild-all@...ts.01.org, linux-pm@...r.kernel.org,
        linux-kernel@...r.kernel.org, ben.tseng@...iatek.com,
        khilman@...libre.com, mka@...omium.org,
        Alexandre Bailon <abailon@...libre.com>
Subject: Re: [PATCH v3 2/2] thermal: add a virtual sensor to aggregate
 temperatures

Hi Alexandre,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on rafael-pm/thermal]
[also build test WARNING on v5.15 next-20211108]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]

url:    https://github.com/0day-ci/linux/commits/Alexandre-Bailon/Add-a-generic-virtual-thermal-sensor/20211029-231137
base:   https://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm.git thermal
config: i386-allmodconfig (attached as .config)
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
reproduce (this is a W=1 build):
        # https://github.com/0day-ci/linux/commit/be0e058f9a82f32140e4e96cf67a3e0842da9f70
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Alexandre-Bailon/Add-a-generic-virtual-thermal-sensor/20211029-231137
        git checkout be0e058f9a82f32140e4e96cf67a3e0842da9f70
        # save the attached .config to linux build tree
        make W=1 ARCH=i386 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@...el.com>

All warnings (new ones prefixed by >>):

>> drivers/thermal/virtual_thermal_sensor.c:73:5: warning: no previous prototype for 'virtual_thermal_sensor_get_module' [-Wmissing-prototypes]
      73 | int virtual_thermal_sensor_get_module(struct virtual_thermal_zone_device *zone,
         |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>> drivers/thermal/virtual_thermal_sensor.c:102:6: warning: no previous prototype for 'virtual_thermal_sensor_put_modules' [-Wmissing-prototypes]
     102 | void virtual_thermal_sensor_put_modules(struct virtual_thermal_sensor *sensor)
         |      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~


vim +/virtual_thermal_sensor_get_module +73 drivers/thermal/virtual_thermal_sensor.c

    72	
  > 73	int virtual_thermal_sensor_get_module(struct virtual_thermal_zone_device *zone,
    74					      const char *name)
    75	{
    76			struct platform_device *sensor_pdev;
    77			struct device_node *node;
    78	
    79			node = of_find_node_by_name(NULL, name);
    80			if (!node)
    81				return -ENODEV;
    82	
    83			node = of_parse_phandle(node, "thermal-sensors", 0);
    84			if (!node)
    85				return -ENODEV;
    86	
    87			sensor_pdev = of_find_device_by_node(node);
    88			if (!sensor_pdev)
    89				return -ENODEV;
    90	
    91			if (!sensor_pdev->dev.driver)
    92				return -EPROBE_DEFER;
    93	
    94			if (!try_module_get(sensor_pdev->dev.driver->owner))
    95				return -ENODEV;
    96	
    97			zone->owner = sensor_pdev->dev.driver->owner;
    98	
    99			return 0;
   100	}
   101	
 > 102	void virtual_thermal_sensor_put_modules(struct virtual_thermal_sensor *sensor)
   103	{
   104		int i;
   105	
   106		for (i = 0; i < sensor->count; i++) {
   107			if (sensor->zones[i].zone)
   108				module_put(sensor->zones[i].owner);
   109		}
   110	}
   111	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

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