linux-kernel - Re: [PATCH 2/2] media: i2c: gc2145: Galaxy Core GC2145 sensor support

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Date:   Wed, 27 Sep 2023 00:21:31 +0800
From:   kernel test robot <lkp@...el.com>
To:     Alain Volmat <alain.volmat@...s.st.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzk@...nel.org>,
        Conor Dooley <conor+dt@...nel.org>
Cc:     oe-kbuild-all@...ts.linux.dev, linux-media@...r.kernel.org,
        Andrey Skvortsov <andrej.skvortzov@...il.com>,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/2] media: i2c: gc2145: Galaxy Core GC2145 sensor support

Hi Alain,

kernel test robot noticed the following build warnings:

[auto build test WARNING on media-tree/master]
[also build test WARNING on robh/for-next linus/master v6.6-rc3 next-20230926]
[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#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Alain-Volmat/dt-bindings-media-i2c-add-galaxycore-gc2145-dt-bindings/20230926-173518
base:   git://linuxtv.org/media_tree.git master
patch link:    https://lore.kernel.org/r/20230926092825.819229-3-alain.volmat%40foss.st.com
patch subject: [PATCH 2/2] media: i2c: gc2145: Galaxy Core GC2145 sensor support
config: alpha-allyesconfig (https://download.01.org/0day-ci/archive/20230927/202309270018.GBMyNvxU-lkp@intel.com/config)
compiler: alpha-linux-gcc (GCC) 13.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20230927/202309270018.GBMyNvxU-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/202309270018.GBMyNvxU-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> drivers/media/i2c/gc2145.c:1140:12: warning: 'gc2145_resume' defined but not used [-Wunused-function]
    1140 | static int gc2145_resume(struct device *dev)
         |            ^~~~~~~~~~~~~
>> drivers/media/i2c/gc2145.c:1129:12: warning: 'gc2145_suspend' defined but not used [-Wunused-function]
    1129 | static int gc2145_suspend(struct device *dev)
         |            ^~~~~~~~~~~~~~


vim +/gc2145_resume +1140 drivers/media/i2c/gc2145.c

  1128	
> 1129	static int gc2145_suspend(struct device *dev)
  1130	{
  1131		struct v4l2_subdev *sd = dev_get_drvdata(dev);
  1132		struct gc2145 *gc2145 = to_gc2145(sd);
  1133	
  1134		if (gc2145->streaming)
  1135			gc2145_stop_streaming(gc2145);
  1136	
  1137		return 0;
  1138	}
  1139	
> 1140	static int gc2145_resume(struct device *dev)
  1141	{
  1142		struct v4l2_subdev *sd = dev_get_drvdata(dev);
  1143		struct gc2145 *gc2145 = to_gc2145(sd);
  1144		struct v4l2_subdev_state *state;
  1145		int ret;
  1146	
  1147		if (gc2145->streaming) {
  1148			state = v4l2_subdev_lock_and_get_active_state(sd);
  1149			ret = gc2145_start_streaming(gc2145, state);
  1150			v4l2_subdev_unlock_state(state);
  1151			if (ret)
  1152				goto error;
  1153		}
  1154	
  1155		return 0;
  1156	
  1157	error:
  1158		gc2145_stop_streaming(gc2145);
  1159		gc2145->streaming = false;
  1160	
  1161		return ret;
  1162	}
  1163	

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