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Date: Fri, 26 Apr 2024 02:05:41 +0800
From: kernel test robot <lkp@intel.com>
To: Sky Huang <SkyLake.Huang@mediatek.com>, Andrew Lunn <andrew@lunn.ch>,
	Heiner Kallweit <hkallweit1@gmail.com>,
	Russell King <linux@armlinux.org.uk>,
	"David S. Miller" <davem@davemloft.net>,
	Eric Dumazet <edumazet@google.com>,
	Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
	Daniel Golle <daniel@makrotopia.org>,
	Qingfang Deng <dqfext@gmail.com>,
	Matthias Brugger <matthias.bgg@gmail.com>,
	AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>,
	linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
	linux-mediatek@lists.infradead.org
Cc: oe-kbuild-all@lists.linux.dev, netdev@vger.kernel.org,
	Steven Liu <Steven.Liu@mediatek.com>,
	"SkyLake.Huang" <skylake.huang@mediatek.com>
Subject: Re: [PATCH 2/3] net: phy: mediatek: Add mtk phy lib for token ring
 access & LED/other manipulations
Message-ID: <202404260115.HS8G6ns3-lkp@intel.com>
References: <20240425023325.15586-3-SkyLake.Huang@mediatek.com>
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In-Reply-To: <20240425023325.15586-3-SkyLake.Huang@mediatek.com>

Hi Sky,

kernel test robot noticed the following build warnings:

[auto build test WARNING on next-20240424]
[cannot apply to net-next/main net/main linus/master v6.9-rc5 v6.9-rc4 v6.9-rc3 v6.9-rc5]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Sky-Huang/net-phy-mediatek-Re-organize-MediaTek-ethernet-phy-drivers/20240425-103608
base:   next-20240424
patch link:    https://lore.kernel.org/r/20240425023325.15586-3-SkyLake.Huang%40mediatek.com
patch subject: [PATCH 2/3] net: phy: mediatek: Add mtk phy lib for token ring access & LED/other manipulations
config: mips-allyesconfig (https://download.01.org/0day-ci/archive/20240426/202404260115.HS8G6ns3-lkp@intel.com/config)
compiler: mips-linux-gcc (GCC) 13.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240426/202404260115.HS8G6ns3-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/202404260115.HS8G6ns3-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> drivers/net/phy/mediatek/mtk-phy-lib.c:51:13: warning: 'tr_write' defined but not used [-Wunused-function]
      51 | static void tr_write(struct phy_device *phydev, u8 ch_addr, u8 node_addr, u8 data_addr, u32 tr_data)
         |             ^~~~~~~~
>> drivers/net/phy/mediatek/mtk-phy-lib.c:33:13: warning: 'tr_read' defined but not used [-Wunused-function]
      33 | static void tr_read(struct phy_device *phydev, u8 ch_addr, u8 node_addr, u8 data_addr,
         |             ^~~~~~~


vim +/tr_write +51 drivers/net/phy/mediatek/mtk-phy-lib.c

    32	
  > 33	static void tr_read(struct phy_device *phydev, u8 ch_addr, u8 node_addr, u8 data_addr,
    34			    u16 *tr_high, u16 *tr_low)
    35	{
    36		phy_select_page(phydev, MTK_PHY_PAGE_EXTENDED_52B5);
    37		__tr_read(phydev, ch_addr, node_addr, data_addr, tr_high, tr_low);
    38		phy_restore_page(phydev, MTK_PHY_PAGE_STANDARD, 0);
    39	}
    40	
    41	static void __tr_write(struct phy_device *phydev, u8 ch_addr, u8 node_addr, u8 data_addr,
    42			       u32 tr_data)
    43	{
    44		__phy_write(phydev, 0x11, tr_data & 0xffff);
    45		__phy_write(phydev, 0x12, tr_data >> 16);
    46		dev_dbg(&phydev->mdio.dev, "tr_high write: 0x%x, tr_low write: 0x%x\n",
    47			tr_data >> 16, tr_data & 0xffff);
    48		tr_access(phydev, false, ch_addr, node_addr, data_addr);
    49	}
    50	
  > 51	static void tr_write(struct phy_device *phydev, u8 ch_addr, u8 node_addr, u8 data_addr, u32 tr_data)
    52	{
    53		phy_select_page(phydev, MTK_PHY_PAGE_EXTENDED_52B5);
    54		__tr_write(phydev, ch_addr, node_addr, data_addr, tr_data);
    55		phy_restore_page(phydev, MTK_PHY_PAGE_STANDARD, 0);
    56	}
    57	

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