Re: [PATCH] i2c: i801: Do not instantiate spd5118 under SPD Write Disable

[kernel test robot <lkp@intel.com>]

Hi Yo-Jung,

kernel test robot noticed the following build errors:

[auto build test ERROR on 176e917e010cb7dcc605f11d2bc33f304292482b]

url:    https://github.com/intel-lab-lkp/linux/commits/Yo-Jung-Leo-Lin/i2c-i801-Do-not-instantiate-spd5118-under-SPD-Write-Disable/20250528-163253
base:   176e917e010cb7dcc605f11d2bc33f304292482b
patch link:    https://lore.kernel.org/r/20250528-for-upstream-not-instantiate-spd5118-v1-1-8216e2d38918%40canonical.com
patch subject: [PATCH] i2c: i801: Do not instantiate spd5118 under SPD Write Disable
config: loongarch-randconfig-001-20250529 (https://download.01.org/0day-ci/archive/20250529/202505290728.VsNgBfDO-lkp@intel.com/config)
compiler: loongarch64-linux-gcc (GCC) 15.1.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250529/202505290728.VsNgBfDO-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@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202505290728.VsNgBfDO-lkp@intel.com/

All errors (new ones prefixed by >>):

   drivers/i2c/busses/i2c-i801.c: In function 'i801_notifier_call':
>> drivers/i2c/busses/i2c-i801.c:1304:9: error: implicit declaration of function '__i801_register_spd' [-Wimplicit-function-declaration]
    1304 |         __i801_register_spd(priv);
         |         ^~~~~~~~~~~~~~~~~~~


vim +/__i801_register_spd +1304 drivers/i2c/busses/i2c-i801.c

  1291	
  1292	static int i801_notifier_call(struct notifier_block *nb, unsigned long action,
  1293				      void *data)
  1294	{
  1295		struct i801_priv *priv = container_of(nb, struct i801_priv, mux_notifier_block);
  1296		struct device *dev = data;
  1297	
  1298		if (action != BUS_NOTIFY_ADD_DEVICE ||
  1299		    dev->type != &i2c_adapter_type ||
  1300		    i2c_root_adapter(dev) != &priv->adapter)
  1301			return NOTIFY_DONE;
  1302	
  1303		/* Call i2c_register_spd for muxed child segments */
> 1304		__i801_register_spd(priv);
  1305	
  1306		return NOTIFY_OK;
  1307	}
  1308	

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