netdev - Re: [net-next PATCH v2 2/3] net: phy: add simple helper to return count of supported speeds

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Date: Fri, 15 Dec 2023 20:16:55 +0800
From: kernel test robot <lkp@...el.com>
To: Christian Marangi <ansuelsmth@...il.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>,
	linux-kernel@...r.kernel.org
Cc: oe-kbuild-all@...ts.linux.dev, netdev@...r.kernel.org,
	Christian Marangi <ansuelsmth@...il.com>
Subject: Re: [net-next PATCH v2 2/3] net: phy: add simple helper to return
 count of supported speeds

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-refactor-and-better-document-phy_speeds-function/20231215-064112
base:   net-next/main
patch link:    https://lore.kernel.org/r/20231214154906.29436-3-ansuelsmth%40gmail.com
patch subject: [net-next PATCH v2 2/3] net: phy: add simple helper to return count of supported speeds
config: x86_64-defconfig (https://download.01.org/0day-ci/archive/20231215/202312152053.bbqS93v4-lkp@intel.com/config)
compiler: gcc-11 (Debian 11.3.0-12) 11.3.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231215/202312152053.bbqS93v4-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/202312152053.bbqS93v4-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> drivers/net/phy/phy.c:239:14: warning: no previous prototype for 'phy_supported_speeds_num' [-Wmissing-prototypes]
     239 | unsigned int phy_supported_speeds_num(struct phy_device *phy)
         |              ^~~~~~~~~~~~~~~~~~~~~~~~


vim +/phy_supported_speeds_num +239 drivers/net/phy/phy.c

   231	
   232	/**
   233	 * phy_supported_speeds_num - return the number of all speeds currently
   234	 *			      supported by a phy device
   235	 * @phy: The phy device to return supported speeds of.
   236	 *
   237	 * Description: Returns the number of supported speeds.
   238	 */
 > 239	unsigned int phy_supported_speeds_num(struct phy_device *phy)
   240	{
   241		return phy_speeds(NULL, 0, phy->supported);
   242	}
   243	

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