linux-kernel - Re: [PATCH net-next 1/1] net: mdio: reset PHY before attempting to access ID register

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Message-ID: <202511262214.pygdUoQY-lkp@intel.com>
Date: Wed, 26 Nov 2025 23:17:28 +0800
From: kernel test robot <lkp@...el.com>
To: Buday Csaba <buday.csaba@...lan.hu>, Andrew Lunn <andrew@...n.ch>,
	Heiner Kallweit <hkallweit1@...il.com>,
	Russell King <linux@...linux.org.uk>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
	linux-kernel@...r.kernel.org
Cc: llvm@...ts.linux.dev, oe-kbuild-all@...ts.linux.dev,
	netdev@...r.kernel.org, Buday Csaba <buday.csaba@...lan.hu>
Subject: Re: [PATCH net-next 1/1] net: mdio: reset PHY before attempting to
 access ID register

Hi Buday,

kernel test robot noticed the following build errors:

[auto build test ERROR on e2c20036a8879476c88002730d8a27f4e3c32d4b]

url:    https://github.com/intel-lab-lkp/linux/commits/Buday-Csaba/net-mdio-reset-PHY-before-attempting-to-access-ID-register/20251125-191906
base:   e2c20036a8879476c88002730d8a27f4e3c32d4b
patch link:    https://lore.kernel.org/r/6cb97b7bfd92d8dc1c1c00662114ece03b6d2913.1764069248.git.buday.csaba%40prolan.hu
patch subject: [PATCH net-next 1/1] net: mdio: reset PHY before attempting to access ID register
config: arm-randconfig-003-20251126 (https://download.01.org/0day-ci/archive/20251126/202511262214.pygdUoQY-lkp@intel.com/config)
compiler: clang version 19.1.7 (https://github.com/llvm/llvm-project cd708029e0b2869e80abe31ddb175f7c35361f90)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251126/202511262214.pygdUoQY-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/202511262214.pygdUoQY-lkp@intel.com/

All errors (new ones prefixed by >>, old ones prefixed by <<):

>> ERROR: modpost: "mdio_device_register_reset" [drivers/net/mdio/fwnode_mdio.ko] undefined!
>> ERROR: modpost: "mdio_device_unregister_reset" [drivers/net/mdio/fwnode_mdio.ko] undefined!

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