linux-kernel - Re: [PATCH net-next v6 2/7] net: ethtool: plumb PHY stats to PHY drivers

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Message-ID: <202501101219.XbI23MZj-lkp@intel.com>
Date: Fri, 10 Jan 2025 12:48:21 +0800
From: kernel test robot <lkp@...el.com>
To: Oleksij Rempel <o.rempel@...gutronix.de>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
	Andrew Lunn <andrew+netdev@...n.ch>,
	Heiner Kallweit <hkallweit1@...il.com>,
	Jonathan Corbet <corbet@....net>
Cc: oe-kbuild-all@...ts.linux.dev, netdev@...r.kernel.org,
	Oleksij Rempel <o.rempel@...gutronix.de>, kernel@...gutronix.de,
	linux-kernel@...r.kernel.org, Simon Horman <horms@...nel.org>,
	Russell King <linux@...linux.org.uk>,
	Maxime Chevallier <maxime.chevallier@...tlin.com>,
	linux-doc@...r.kernel.org
Subject: Re: [PATCH net-next v6 2/7] net: ethtool: plumb PHY stats to PHY
 drivers

Hi Oleksij,

kernel test robot noticed the following build warnings:

[auto build test WARNING on net-next/main]

url:    https://github.com/intel-lab-lkp/linux/commits/Oleksij-Rempel/ethtool-linkstate-migrate-linkstate-functions-to-support-multi-PHY-setups/20250109-174927
base:   net-next/main
patch link:    https://lore.kernel.org/r/20250109094457.97466-3-o.rempel%40pengutronix.de
patch subject: [PATCH net-next v6 2/7] net: ethtool: plumb PHY stats to PHY drivers
config: arc-axs101_defconfig (https://download.01.org/0day-ci/archive/20250110/202501101219.XbI23MZj-lkp@intel.com/config)
compiler: arc-elf-gcc (GCC) 13.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250110/202501101219.XbI23MZj-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/202501101219.XbI23MZj-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> drivers/net/phy/phy.c:631: warning: expecting prototype for phy_ethtool_get_phy_stats(). Prototype was for __phy_ethtool_get_phy_stats() instead
>> drivers/net/phy/phy.c:650: warning: expecting prototype for phy_ethtool_get_link_ext_stats(). Prototype was for __phy_ethtool_get_link_ext_stats() instead


vim +631 drivers/net/phy/phy.c

   617	
   618	/**
   619	 * phy_ethtool_get_phy_stats - Retrieve standardized PHY statistics
   620	 * @phydev: Pointer to the PHY device
   621	 * @phy_stats: Pointer to ethtool_eth_phy_stats structure
   622	 * @phydev_stats: Pointer to ethtool_phy_stats structure
   623	 *
   624	 * Fetches PHY statistics using a kernel-defined interface for consistent
   625	 * diagnostics. Unlike phy_ethtool_get_stats(), which allows custom stats,
   626	 * this function enforces a standardized format for better interoperability.
   627	 */
   628	void __phy_ethtool_get_phy_stats(struct phy_device *phydev,
   629					 struct ethtool_eth_phy_stats *phy_stats,
   630					 struct ethtool_phy_stats *phydev_stats)
 > 631	{
   632		if (!phydev->drv || !phydev->drv->get_phy_stats)
   633			return;
   634	
   635		mutex_lock(&phydev->lock);
   636		phydev->drv->get_phy_stats(phydev, phy_stats, phydev_stats);
   637		mutex_unlock(&phydev->lock);
   638	}
   639	
   640	/**
   641	 * phy_ethtool_get_link_ext_stats - Retrieve extended link statistics for a PHY
   642	 * @phydev: Pointer to the PHY device
   643	 * @link_stats: Pointer to the structure to store extended link statistics
   644	 *
   645	 * Populates the ethtool_link_ext_stats structure with link down event counts
   646	 * and additional driver-specific link statistics, if available.
   647	 */
   648	void __phy_ethtool_get_link_ext_stats(struct phy_device *phydev,
   649					      struct ethtool_link_ext_stats *link_stats)
 > 650	{
   651		link_stats->link_down_events = READ_ONCE(phydev->link_down_events);
   652	
   653		if (!phydev->drv || !phydev->drv->get_link_stats)
   654			return;
   655	
   656		mutex_lock(&phydev->lock);
   657		phydev->drv->get_link_stats(phydev, link_stats);
   658		mutex_unlock(&phydev->lock);
   659	}
   660	

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