netdev - Re: [PATCH net-next 2/4] net: phy: dp83869: Set opmode from straps

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Message-ID: <202005200117.iOd1QuA3%lkp@intel.com>
Date:   Wed, 20 May 2020 01:19:21 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Dan Murphy <dmurphy@...com>, andrew@...n.ch, f.fainelli@...il.com,
        hkallweit1@...il.com, davem@...emloft.net
Cc:     kbuild-all@...ts.01.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
        Dan Murphy <dmurphy@...com>
Subject: Re: [PATCH net-next 2/4] net: phy: dp83869: Set opmode from straps

Hi Dan,

I love your patch! Perhaps something to improve:

[auto build test WARNING on net-next/master]
[also build test WARNING on robh/for-next sparc-next/master net/master linus/master v5.7-rc6 next-20200518]
[if your patch is applied to the wrong git tree, please drop us a note to help
improve the system. BTW, we also suggest to use '--base' option to specify the
base tree in git format-patch, please see https://stackoverflow.com/a/37406982]

url:    https://github.com/0day-ci/linux/commits/Dan-Murphy/DP83869-Enhancements/20200519-222047
base:   https://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next.git 5cdfe8306631b2224e3f81fc5a1e2721c7a1948b
config: sh-allmodconfig (attached as .config)
compiler: sh4-linux-gcc (GCC) 9.3.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=sh 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kbuild test robot <lkp@...el.com>

All warnings (new ones prefixed by >>, old ones prefixed by <<):

drivers/net/phy/dp83869.c: In function 'dp83869_set_strapped_mode':
>> drivers/net/phy/dp83869.c:171:10: warning: comparison is always false due to limited range of data type [-Wtype-limits]
171 |  if (val < 0)
|          ^

vim +171 drivers/net/phy/dp83869.c

   164	
   165	static int dp83869_set_strapped_mode(struct phy_device *phydev)
   166	{
   167		struct dp83869_private *dp83869 = phydev->priv;
   168		u16 val;
   169	
   170		val = phy_read_mmd(phydev, DP83869_DEVADDR, DP83869_STRAP_STS1);
 > 171		if (val < 0)
   172			return val;
   173	
   174		dp83869->mode = val & DP83869_STRAP_OP_MODE_MASK;
   175	
   176		return 0;
   177	}
   178	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

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