linux-kernel - Re: [PATCH 1/2] media: i2c: ov5647: Convert to CCI register access helpers

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Message-ID: <202512270443.nNMHyu7p-lkp@intel.com>
Date: Sat, 27 Dec 2025 04:40:40 +0800
From: kernel test robot <lkp@...el.com>
To: Xiaolei Wang <xiaolei.wang@...driver.com>, sakari.ailus@...ux.intel.com,
	dave.stevenson@...pberrypi.com, jacopo@...ndi.org,
	mchehab@...nel.org, prabhakar.mahadev-lad.rj@...renesas.com,
	laurent.pinchart@...asonboard.com, hverkuil+cisco@...nel.org,
	johannes.goede@....qualcomm.com, hverkuil-cisco@...all.nl,
	jai.luthra@...asonboard.com
Cc: oe-kbuild-all@...ts.linux.dev, linux-media@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/2] media: i2c: ov5647: Convert to CCI register access
 helpers

Hi Xiaolei,

kernel test robot noticed the following build warnings:

[auto build test WARNING on sailus-media-tree/master]
[also build test WARNING on linus/master v6.19-rc2 next-20251219]
[cannot apply to sailus-media-tree/streams]
[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/Xiaolei-Wang/media-i2c-ov5647-Convert-to-CCI-register-access-helpers/20251226-115543
base:   git://linuxtv.org/sailus/media_tree.git master
patch link:    https://lore.kernel.org/r/20251226031311.2068414-2-xiaolei.wang%40windriver.com
patch subject: [PATCH 1/2] media: i2c: ov5647: Convert to CCI register access helpers
config: nios2-allmodconfig (https://download.01.org/0day-ci/archive/20251227/202512270443.nNMHyu7p-lkp@intel.com/config)
compiler: nios2-linux-gcc (GCC) 11.5.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251227/202512270443.nNMHyu7p-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/202512270443.nNMHyu7p-lkp@intel.com/

All warnings (new ones prefixed by >>):

   drivers/media/i2c/ov5647.c: In function 'ov5647_sensor_set_register':
>> drivers/media/i2c/ov5647.c:790:13: warning: unused variable 'ret' [-Wunused-variable]
     790 |         int ret;
         |             ^~~


vim +/ret +790 drivers/media/i2c/ov5647.c

   785	
   786	static int ov5647_sensor_set_register(struct v4l2_subdev *sd,
   787					      const struct v4l2_dbg_register *reg)
   788	{
   789		struct ov5647 *sensor = to_sensor(sd);
 > 790		int ret;
   791	
   792		return cci_write(sensor->regmap, reg->reg & 0xff, reg->val & 0xff, NULL);
   793	}
   794	#endif
   795	

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