netdev - Re: [Patch net] team: use a larger struct for mac address

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Message-ID: <201707212121.Z2YLX9xv%fengguang.wu@intel.com>
Date:   Fri, 21 Jul 2017 21:19:02 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Cong Wang <xiyou.wangcong@...il.com>
Cc:     kbuild-all@...org, netdev@...r.kernel.org, andreyknvl@...gle.com,
        Cong Wang <xiyou.wangcong@...il.com>,
        Jiri Pirko <jiri@...nulli.us>
Subject: Re: [Patch net] team: use a larger struct for mac address

Hi Cong,

[auto build test WARNING on net/master]

url:    https://github.com/0day-ci/linux/commits/Cong-Wang/team-use-a-larger-struct-for-mac-address/20170721-203849
config: xtensa-allyesconfig (attached as .config)
compiler: xtensa-linux-gcc (GCC) 4.9.0
reproduce:
        wget https://raw.githubusercontent.com/01org/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        make.cross ARCH=xtensa 

All warnings (new ones prefixed by >>):

   drivers/net/team/team.c: In function '__set_port_dev_addr':
>> drivers/net/team/team.c:67:9: warning: passing argument 2 of 'dev_set_mac_address' from incompatible pointer type
     return dev_set_mac_address(port_dev, &addr);
            ^
   In file included from drivers/net/team/team.c:20:0:
   include/linux/netdevice.h:3290:5: note: expected 'struct sockaddr *' but argument is of type 'struct __kernel_sockaddr_storage *'
    int dev_set_mac_address(struct net_device *, struct sockaddr *);
        ^

vim +/dev_set_mac_address +67 drivers/net/team/team.c

3d249d4c Jiri Pirko 2011-11-11  55  
3d249d4c Jiri Pirko 2011-11-11  56  /*
1d76efe1 Jiri Pirko 2012-08-17  57   * Since the ability to change device address for open port device is tested in
3d249d4c Jiri Pirko 2011-11-11  58   * team_port_add, this function can be called without control of return value
3d249d4c Jiri Pirko 2011-11-11  59   */
1d76efe1 Jiri Pirko 2012-08-17  60  static int __set_port_dev_addr(struct net_device *port_dev,
3d249d4c Jiri Pirko 2011-11-11  61  			       const unsigned char *dev_addr)
3d249d4c Jiri Pirko 2011-11-11  62  {
44118243 Cong Wang  2017-07-20  63  	struct sockaddr_storage addr;
3d249d4c Jiri Pirko 2011-11-11  64  
44118243 Cong Wang  2017-07-20  65  	memcpy(addr.__data, dev_addr, port_dev->addr_len);
44118243 Cong Wang  2017-07-20  66  	addr.ss_family = port_dev->type;
3d249d4c Jiri Pirko 2011-11-11 @67  	return dev_set_mac_address(port_dev, &addr);
3d249d4c Jiri Pirko 2011-11-11  68  }
3d249d4c Jiri Pirko 2011-11-11  69  

:::::: The code at line 67 was first introduced by commit
:::::: 3d249d4ca7d0ed6629a135ea1ea21c72286c0d80 net: introduce ethernet teaming device

:::::: TO: Jiri Pirko <jpirko@...hat.com>
:::::: CC: David S. Miller <davem@...emloft.net>

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