netdev - Re: [PATCH net-next 2] net: ngbe: sw init and hw init

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Date:   Tue, 6 Sep 2022 20:22:40 +0800
From:   kernel test robot <lkp@...el.com>
To:     Mengyuan Lou <mengyuanlou@...-swift.com>, netdev@...r.kernel.org
Cc:     llvm@...ts.linux.dev, kbuild-all@...ts.01.org,
        jiawenwu@...-swift.com, Mengyuan Lou <mengyuanlou@...-swift.com>
Subject: Re: [PATCH net-next 2] net: ngbe: sw init and hw init

Hi Mengyuan,

I love your patch! Perhaps something to improve:

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

url:    https://github.com/intel-lab-lkp/linux/commits/Mengyuan-Lou/net-ngbe-sw-init-and-hw-init/20220905-210027
base:   https://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next.git 6630edabd80823cc6f7c874d52a4cac6381b9051
config: arm64-allmodconfig (https://download.01.org/0day-ci/archive/20220906/202209062015.jlZLOfpQ-lkp@intel.com/config)
compiler: clang version 16.0.0 (https://github.com/llvm/llvm-project c55b41d5199d2394dd6cdb8f52180d8b81d809d4)
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # install arm64 cross compiling tool for clang build
        # apt-get install binutils-aarch64-linux-gnu
        # https://github.com/intel-lab-lkp/linux/commit/683e3287b25349b7844b53577086124b2bdf3cb6
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Mengyuan-Lou/net-ngbe-sw-init-and-hw-init/20220905-210027
        git checkout 683e3287b25349b7844b53577086124b2bdf3cb6
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm64 SHELL=/bin/bash drivers/net/ethernet/ kernel/power/

If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@...el.com>

All warnings (new ones prefixed by >>):

>> drivers/net/ethernet/wangxun/ngbe/ngbe_main.c:107:30: warning: result of comparison of constant 16384 with expression of type 'u8' (aka 'unsigned char') is always false [-Wtautological-constant-out-of-range-compare]
           hw->wol_enabled = (wol_mask == NGBE_WOL_SUP) ? 1 : 0;
                              ~~~~~~~~ ^  ~~~~~~~~~~~~
   drivers/net/ethernet/wangxun/ngbe/ngbe_main.c:108:32: warning: result of comparison of constant 32768 with expression of type 'u8' (aka 'unsigned char') is always false [-Wtautological-constant-out-of-range-compare]
           hw->ncsi_enabled = (ncsi_mask == NGBE_NCSI_MASK ||
                               ~~~~~~~~~ ^  ~~~~~~~~~~~~~~
   2 warnings generated.


vim +107 drivers/net/ethernet/wangxun/ngbe/ngbe_main.c

    59	
    60	/**
    61	 *  ngbe_init_type_code - Initialize the shared code
    62	 *  @hw: pointer to hardware structure
    63	 **/
    64	static void ngbe_init_type_code(struct ngbe_hw *hw)
    65	{
    66		u8 wol_mask = 0, ncsi_mask = 0;
    67		u16 type_mask = 0;
    68	
    69		type_mask = (u16)(hw->subsystem_device_id & NGBE_OEM_MASK);
    70		ncsi_mask = (u8)(hw->subsystem_device_id & NGBE_NCSI_MASK);
    71		wol_mask = (u8)(hw->subsystem_device_id & NGBE_WOL_MASK);
    72	
    73		switch (type_mask) {
    74		case NGBE_SUBID_M88E1512_SFP:
    75		case NGBE_SUBID_LY_M88E1512_SFP:
    76			hw->phy.type = ngbe_phy_m88e1512_sfi;
    77			break;
    78		case NGBE_SUBID_M88E1512_RJ45:
    79			hw->phy.type = ngbe_phy_m88e1512;
    80			break;
    81		case NGBE_SUBID_M88E1512_MIX:
    82			hw->phy.type = ngbe_phy_m88e1512_unknown;
    83			break;
    84		case NGBE_SUBID_YT8521S_SFP:
    85		case NGBE_SUBID_YT8521S_SFP_GPIO:
    86		case NGBE_SUBID_LY_YT8521S_SFP:
    87			hw->phy.type = ngbe_phy_yt8521s_sfi;
    88			break;
    89		case NGBE_SUBID_INTERNAL_YT8521S_SFP:
    90		case NGBE_SUBID_INTERNAL_YT8521S_SFP_GPIO:
    91			hw->phy.type = ngbe_phy_internal_yt8521s_sfi;
    92			break;
    93		case NGBE_SUBID_RGMII_FPGA:
    94		case NGBE_SUBID_OCP_CARD:
    95			fallthrough;
    96		default:
    97			hw->phy.type = ngbe_phy_internal;
    98			break;
    99		}
   100	
   101		if (hw->phy.type == ngbe_phy_internal ||
   102		    hw->phy.type == ngbe_phy_internal_yt8521s_sfi)
   103			hw->mac.type = ngbe_mac_type_mdi;
   104		else
   105			hw->mac.type = ngbe_mac_type_rgmii;
   106	
 > 107		hw->wol_enabled = (wol_mask == NGBE_WOL_SUP) ? 1 : 0;
   108		hw->ncsi_enabled = (ncsi_mask == NGBE_NCSI_MASK ||
   109				   type_mask == NGBE_SUBID_OCP_CARD) ? 1 : 0;
   110	
   111		switch (type_mask) {
   112		case NGBE_SUBID_LY_YT8521S_SFP:
   113		case NGBE_SUBID_LY_M88E1512_SFP:
   114		case NGBE_SUBID_YT8521S_SFP_GPIO:
   115		case NGBE_SUBID_INTERNAL_YT8521S_SFP_GPIO:
   116			hw->gpio_ctrl = 1;
   117			break;
   118		default:
   119			hw->gpio_ctrl = 0;
   120			break;
   121		}
   122	}
   123	

-- 
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