linux-kernel - Re: [PATCH v4] hid-mcp2200: added driver for GPIOs of MCP2200

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Date:   Fri, 18 Aug 2023 01:11:32 +0800
From:   kernel test robot <lkp@...el.com>
To:     johannes@...-linux.rocks, jikos@...nel.org
Cc:     oe-kbuild-all@...ts.linux.dev, benjamin.tissoires@...hat.com,
        linux-kernel@...r.kernel.org, linux-input@...r.kernel.org,
        andi.shyti@...nel.org, christophe.jaillet@...adoo.fr,
        ak@...klinger.de, Johannes Roith <johannes@...-linux.rocks>
Subject: Re: [PATCH v4] hid-mcp2200: added driver for GPIOs of MCP2200

Hi,

kernel test robot noticed the following build warnings:

[auto build test WARNING on hid/for-next]
[also build test WARNING on linus/master v6.5-rc6 next-20230817]
[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/johannes-gnu-linux-rocks/hid-mcp2200-added-driver-for-GPIOs-of-MCP2200/20230817-172246
base:   https://git.kernel.org/pub/scm/linux/kernel/git/hid/hid.git for-next
patch link:    https://lore.kernel.org/r/20230817091505.213318-1-johannes%40gnu-linux.rocks
patch subject: [PATCH v4] hid-mcp2200: added driver for GPIOs of MCP2200
config: sparc-allyesconfig (https://download.01.org/0day-ci/archive/20230818/202308180056.nB1KSUap-lkp@intel.com/config)
compiler: sparc64-linux-gcc (GCC) 12.3.0
reproduce: (https://download.01.org/0day-ci/archive/20230818/202308180056.nB1KSUap-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/202308180056.nB1KSUap-lkp@intel.com/

All warnings (new ones prefixed by >>):

   drivers/hid/hid-mcp2200.c: In function 'mcp2200_remove':
>> drivers/hid/hid-mcp2200.c:395:25: warning: variable 'mcp' set but not used [-Wunused-but-set-variable]
     395 |         struct mcp2200 *mcp;
         |                         ^~~


vim +/mcp +395 drivers/hid/hid-mcp2200.c

   392	
   393	static void mcp2200_remove(struct hid_device *hdev)
   394	{
 > 395		struct mcp2200 *mcp;
   396	
   397		mcp = hid_get_drvdata(hdev);
   398	}
   399	

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