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Message-ID: <202312131208.HLapuT6A-lkp@intel.com>
Date: Wed, 13 Dec 2023 12:59:59 +0800
From: kernel test robot <lkp@...el.com>
To: Christian Marangi <ansuelsmth@...il.com>,
	Florian Fainelli <florian.fainelli@...adcom.com>,
	Broadcom internal kernel review list <bcm-kernel-feedback-list@...adcom.com>,
	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>,
	Vladimir Oltean <olteanv@...il.com>,
	David Epping <david.epping@...singlinkelectronics.com>,
	"Russell King (Oracle)" <rmk+kernel@...linux.org.uk>,
	Harini Katakam <harini.katakam@....com>,
	linux-kernel@...r.kernel.org
Cc: llvm@...ts.linux.dev, oe-kbuild-all@...ts.linux.dev,
	netdev@...r.kernel.org
Subject: Re: [net-next PATCH v5 3/3] net: phy: add support for PHY package
 MMD read/write

Hi Christian,

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/Christian-Marangi/net-phy-restructure-__phy_write-read_mmd-to-helper-and-phydev-user/20231212-203921
base:   net-next/main
patch link:    https://lore.kernel.org/r/20231212123743.29829-3-ansuelsmth%40gmail.com
patch subject: [net-next PATCH v5 3/3] net: phy: add support for PHY package MMD read/write
config: arm-defconfig (https://download.01.org/0day-ci/archive/20231213/202312131208.HLapuT6A-lkp@intel.com/config)
compiler: clang version 14.0.6 (https://github.com/llvm/llvm-project.git f28c006a5895fc0e329fe15fead81e37457cb1d1)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231213/202312131208.HLapuT6A-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/202312131208.HLapuT6A-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> drivers/net/phy/phy-core.c:777: warning: expecting prototype for __phy_package_write_mmd(). Prototype was for phy_package_write_mmd() instead


vim +777 drivers/net/phy/phy-core.c

   757	
   758	/**
   759	 * __phy_package_write_mmd - write MMD reg relative to PHY package base addr
   760	 * @phydev: The phy_device struct
   761	 * @addr_offset: The offset to be added to PHY package base_addr
   762	 * @devad: The MMD to write to
   763	 * @regnum: The register on the MMD to write
   764	 * @val: value to write to @regnum
   765	 *
   766	 * Convenience helper for writing a register of an MMD on a given PHY
   767	 * using the PHY package base address. The base address is added to
   768	 * the addr_offset value.
   769	 *
   770	 * Same calling rules as for phy_write();
   771	 *
   772	 * NOTE: It's assumed that the entire PHY package is either C22 or C45.
   773	 */
   774	int phy_package_write_mmd(struct phy_device *phydev,
   775				  unsigned int addr_offset, int devad,
   776				  u32 regnum, u16 val)
 > 777	{
   778		struct phy_package_shared *shared = phydev->shared;
   779		int addr = shared->base_addr + addr_offset;
   780		int ret;
   781	
   782		if (addr >= PHY_MAX_ADDR)
   783			return -EIO;
   784	
   785		if (regnum > (u16)~0 || devad > 32)
   786			return -EINVAL;
   787	
   788		phy_lock_mdio_bus(phydev);
   789		ret = mmd_phy_write(phydev->mdio.bus, addr, phydev->is_c45, devad,
   790				    regnum, val);
   791		phy_unlock_mdio_bus(phydev);
   792	
   793		return ret;
   794	}
   795	EXPORT_SYMBOL(phy_package_write_mmd);
   796	

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

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