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

[kernel test robot]

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: arm-defconfig (https://download.01.org/0day-ci/archive/20240601/202406010354.ludmQT3O-lkp@xxxxxxxxx/config)
compiler: clang version 14.0.6 (https://github.com/llvm/llvm-project f28c006a5895fc0e329fe15fead81e37457cb1d1)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240601/202406010354.ludmQT3O-lkp@xxxxxxxxx/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@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-kbuild-all/202406010354.ludmQT3O-lkp@xxxxxxxxx/

All warnings (new ones prefixed by >>):

>> sound/pci/hda/hda_component.c:140:27: warning: 'memset' call operates on objects of type 'struct hda_component_parent' while the size is based on a different type 'struct hda_component_parent *' [-Wsizeof-pointer-memaccess]
           memset(parent, 0, sizeof(parent));
                  ~~~~~~            ^~~~~~
   sound/pci/hda/hda_component.c:140:27: note: did you mean to dereference the argument to 'sizeof' (and multiply it by the number of elements)?
           memset(parent, 0, sizeof(parent));
                                    ^~~~~~
   1 warning generated.


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	

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