linux-kernel - Re: [PATCH v2] media: i2c: alvium: Accelerated alvium_set

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Message-ID: <202509101013.wDfoHTNv-lkp@intel.com>
Date: Wed, 10 Sep 2025 10:31:16 +0800
From: kernel test robot <lkp@...el.com>
To: Martin Hecht <mhecht73@...il.com>, linux-media@...r.kernel.org
Cc: oe-kbuild-all@...ts.linux.dev, sakari.ailus@...ux.intel.com,
	michael.roeder@...et.eu, martin.hecht@...et.eu,
	Martin Hecht <mhecht73@...il.com>,
	Tommaso Merciai <tomm.merciai@...il.com>,
	Mauro Carvalho Chehab <mchehab@...nel.org>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] media: i2c: alvium: Accelerated alvium_set_power

Hi Martin,

kernel test robot noticed the following build warnings:

[auto build test WARNING on sailus-media-tree/master]
[also build test WARNING on linuxtv-media-pending/master media-tree/master linus/master v6.17-rc5 next-20250909]
[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/Martin-Hecht/media-i2c-alvium-Accelerated-alvium_set_power/20250909-193217
base:   git://linuxtv.org/sailus/media_tree.git master
patch link:    https://lore.kernel.org/r/20250909112252.2577949-1-mhecht73%40gmail.com
patch subject: [PATCH v2] media: i2c: alvium: Accelerated alvium_set_power
config: alpha-randconfig-r072-20250910 (https://download.01.org/0day-ci/archive/20250910/202509101013.wDfoHTNv-lkp@intel.com/config)
compiler: alpha-linux-gcc (GCC) 11.5.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250910/202509101013.wDfoHTNv-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/202509101013.wDfoHTNv-lkp@intel.com/

All warnings (new ones prefixed by >>):

   drivers/media/i2c/alvium-csi2.c: In function 'alvium_check':
>> drivers/media/i2c/alvium-csi2.c:2367:24: warning: unused variable 'dev' [-Wunused-variable]
    2367 |         struct device *dev = &alvium->i2c_client->dev;
         |                        ^~~


vim +/dev +2367 drivers/media/i2c/alvium-csi2.c

  2364	
  2365	static int alvium_check(struct alvium_dev *alvium, u64 *bcrm_major)
  2366	{
> 2367		struct device *dev = &alvium->i2c_client->dev;
  2368		int ret = 0;
  2369	
  2370		ret = alvium_read(alvium, REG_BCRM_MAJOR_VERSION_R, bcrm_major, NULL);
  2371	
  2372		if (ret)
  2373			return ret;
  2374	
  2375		if (*bcrm_major != 0)
  2376			return 0;
  2377	
  2378		return -ENODEV;
  2379	}
  2380	

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