linux-kernel - Re: [PATCH 4/7] ALSA: hda: hda_component: Introduce component parent structure

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Date: Sat, 1 Jun 2024 11:02:50 +0800
From: kernel test robot <lkp@...el.com>
To: Simon Trimmer <simont@...nsource.cirrus.com>, tiwai@...e.com
Cc: oe-kbuild-all@...ts.linux.dev, linux-sound@...r.kernel.org,
	alsa-devel@...a-project.org, linux-kernel@...r.kernel.org,
	patches@...nsource.cirrus.com, soyer@....hu, shenghao-ding@...com,
	kevin-lu@...com, baojun.xu@...com, kailang@...ltek.com,
	Simon Trimmer <simont@...nsource.cirrus.com>
Subject: Re: [PATCH 4/7] ALSA: hda: hda_component: Introduce component parent
 structure

Hi Simon,

kernel test robot noticed the following build warnings:

[auto build test WARNING on tiwai-sound/for-next]
[also build test WARNING on tiwai-sound/for-linus linus/master v6.10-rc1 next-20240531]
[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/Simon-Trimmer/ALSA-hda-cs35l56-Component-should-be-unbound-before-deconstruction/20240531-231828
base:   https://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound.git for-next
patch link:    https://lore.kernel.org/r/20240531151409.80284-5-simont%40opensource.cirrus.com
patch subject: [PATCH 4/7] ALSA: hda: hda_component: Introduce component parent structure
config: arm64-randconfig-001-20240601 (https://download.01.org/0day-ci/archive/20240601/202406011025.mzDXJJjz-lkp@intel.com/config)
compiler: aarch64-linux-gcc (GCC) 13.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240601/202406011025.mzDXJJjz-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/202406011025.mzDXJJjz-lkp@intel.com/

All warnings (new ones prefixed by >>):

   sound/pci/hda/hda_component.c: In function 'hda_component_manager_bind':
>> sound/pci/hda/hda_component.c:140:33: warning: argument to 'sizeof' in 'memset' call is the same expression as the destination; did you mean to dereference it? [-Wsizeof-pointer-memaccess]
     140 |         memset(parent, 0, sizeof(parent));
         |                                 ^


vim +140 sound/pci/hda/hda_component.c

   133	
   134	int hda_component_manager_bind(struct hda_codec *cdc,
   135				       struct hda_component_parent *parent)
   136	{
   137		int i;
   138	
   139		/* Init shared and component specific data */
 > 140		memset(parent, 0, sizeof(parent));
   141		for (i = 0; i < ARRAY_SIZE(parent->comps); i++)
   142			parent->comps[i].codec = cdc;
   143	
   144		return component_bind_all(hda_codec_dev(cdc), &parent->comps);
   145	}
   146	EXPORT_SYMBOL_NS_GPL(hda_component_manager_bind, SND_HDA_SCODEC_COMPONENT);
   147	

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