linux-kernel - Re: [PATCH v4 4/4] Input: cs40l50 - Add support for the CS40L50 haptic driver

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Message-ID: <202310202344.LreohGFP-lkp@intel.com>
Date:   Fri, 20 Oct 2023 23:30:44 +0800
From:   kernel test robot <lkp@...el.com>
To:     James Ogletree <james.ogletree@...nsource.cirrus.com>
Cc:     oe-kbuild-all@...ts.linux.dev,
        James Ogletree <james.ogletree@...rus.com>,
        Dmitry Torokhov <dmitry.torokhov@...il.com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzk@...nel.org>,
        Lee Jones <lee@...nel.org>,
        Fred Treven <fred.treven@...rus.com>,
        Ben Bright <ben.bright@...rus.com>,
        linux-input@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v4 4/4] Input: cs40l50 - Add support for the CS40L50
 haptic driver

Hi James,

kernel test robot noticed the following build warnings:

[auto build test WARNING on dtor-input/next]
[also build test WARNING on dtor-input/for-linus lee-mfd/for-mfd-next robh/for-next linus/master lee-mfd/for-mfd-fixes v6.6-rc6 next-20231020]
[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/James-Ogletree/dt-bindings-input-cirrus-cs40l50-Add-initial-DT-binding/20231019-015950
base:   https://git.kernel.org/pub/scm/linux/kernel/git/dtor/input.git next
patch link:    https://lore.kernel.org/r/20231018175726.3879955-5-james.ogletree%40opensource.cirrus.com
patch subject: [PATCH v4 4/4] Input: cs40l50 - Add support for the CS40L50 haptic driver
config: sparc-allyesconfig (https://download.01.org/0day-ci/archive/20231020/202310202344.LreohGFP-lkp@intel.com/config)
compiler: sparc64-linux-gcc (GCC) 13.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231020/202310202344.LreohGFP-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/202310202344.LreohGFP-lkp@intel.com/

All warnings (new ones prefixed by >>):

   drivers/input/misc/cs40l50-vibra.c: In function 'cs40l50_vibra_remove':
>> drivers/input/misc/cs40l50-vibra.c:329:13: warning: the comparison will always evaluate as 'true' for the address of 'dsp' will never be NULL [-Waddress]
     329 |         if (&cs40l50->dsp)
         |             ^
   In file included from drivers/input/misc/cs40l50-vibra.c:11:
   include/linux/mfd/cs40l50.h:180:23: note: 'dsp' declared here
     180 |         struct cs_dsp dsp;
         |                       ^~~


vim +329 drivers/input/misc/cs40l50-vibra.c

   319	
   320	static int cs40l50_vibra_remove(struct platform_device *pdev)
   321	{
   322		struct cs40l50_private *cs40l50 = dev_get_drvdata(pdev->dev.parent);
   323	
   324		input_unregister_device(cs40l50->input);
   325		cs_hap_remove(&cs40l50->haptics);
   326	
   327		if (cs40l50->dsp.booted)
   328			cs_dsp_power_down(&cs40l50->dsp);
 > 329		if (&cs40l50->dsp)
   330			cs_dsp_remove(&cs40l50->dsp);
   331	
   332		return 0;
   333	}
   334	

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