Hi Stephen,

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

url:    
https://github.com/0day-ci/linux/commits/Stephen-Hemminger/netvsc-lockdep-and-related-fixes/20170720-191938
config: x86_64-rhel (attached as .config)
compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901
reproduce:
        # save the attached .config to linux build tree
        make ARCH=x86_64 

Note: the 
linux-review/Stephen-Hemminger/netvsc-lockdep-and-related-fixes/20170720-191938 
HEAD a5e48342eae178e9ed020d3634cdf92f1f05cb70 builds fine.
      It only hurts bisectibility.

All error/warnings (new ones prefixed by >>):

   drivers/net/hyperv/netvsc.c: In function 'netvsc_switch_datapath':
>> drivers/net/hyperv/netvsc.c:44:33: error: implicit declaration of function 
>> 'rtnl_dereference' [-Werror=implicit-function-declaration]
     struct netvsc_device *nv_dev = rtnl_dereference(net_device_ctx->nvdev);
                                    ^~~~~~~~~~~~~~~~
>> drivers/net/hyperv/netvsc.c:44:33: warning: initialization makes pointer 
>> from integer without a cast [-Wint-conversion]
   drivers/net/hyperv/netvsc.c: In function 'netvsc_device_remove':
   drivers/net/hyperv/netvsc.c:553:5: warning: initialization makes pointer 
from integer without a cast [-Wint-conversion]
      = rtnl_dereference(net_device_ctx->nvdev);
        ^~~~~~~~~~~~~~~~
   cc1: some warnings being treated as errors

vim +/rtnl_dereference +44 drivers/net/hyperv/netvsc.c

    35  
    36  /*
    37   * Switch the data path from the synthetic interface to the VF
    38   * interface.
    39   */
    40  void netvsc_switch_datapath(struct net_device *ndev, bool vf)
    41  {
    42          struct net_device_context *net_device_ctx = netdev_priv(ndev);
    43          struct hv_device *dev = net_device_ctx->device_ctx;
  > 44          struct netvsc_device *nv_dev = 
rtnl_dereference(net_device_ctx->nvdev);
    45          struct nvsp_message *init_pkt = &nv_dev->channel_init_pkt;
    46  
    47          memset(init_pkt, 0, sizeof(struct nvsp_message));
    48          init_pkt->hdr.msg_type = NVSP_MSG4_TYPE_SWITCH_DATA_PATH;
    49          if (vf)
    50                  init_pkt->msg.v4_msg.active_dp.active_datapath =
    51                          NVSP_DATAPATH_VF;
    52          else
    53                  init_pkt->msg.v4_msg.active_dp.active_datapath =
    54                          NVSP_DATAPATH_SYNTHETIC;
    55  
    56          vmbus_sendpacket(dev->channel, init_pkt,
    57                                 sizeof(struct nvsp_message),
    58                                 (unsigned long)init_pkt,
    59                                 VM_PKT_DATA_INBAND, 0);
    60  
    61          net_device_ctx->datapath = vf;
    62  }
    63  

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

Attachment: .config.gz
Description: application/gzip

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