Hi John,

[auto build test ERROR on net-next/master]
[also build test ERROR on next-20160912]
[cannot apply to v4.8-rc6]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]
[Suggest to use git(>=2.9.0) format-patch --base=<commit> (or --base=auto for convenience) to record what (public, well-known) commit your patch series was built on]
[Check https://git-scm.com/docs/git-format-patch for more information]

url:    https://github.com/0day-ci/linux/commits/John-Crispin/net-dsa-add-FIB-support/20160912-190416
config: x86_64-randconfig-x006-201637 (attached as .config)
compiler: gcc-6 (Debian 6.1.1-9) 6.1.1 20160705
reproduce:
        # save the attached .config to linux build tree
        make ARCH=x86_64 

All errors (new ones prefixed by >>):

   net/dsa/slave.c: In function 'dsa_slave_ipv4_fib_add':
>> net/dsa/slave.c:345:9: error: 'struct dsa_switch' has no member named 'drv'; did you mean 'dev'?
     if (!ds->drv->ipv4_fib_prepare || !ds->drv->ipv4_fib_add)
            ^~
   net/dsa/slave.c:345:39: error: 'struct dsa_switch' has no member named 'drv'; did you mean 'dev'?
     if (!ds->drv->ipv4_fib_prepare || !ds->drv->ipv4_fib_add)
                                          ^~
   net/dsa/slave.c:349:11: error: 'struct dsa_switch' has no member named 'drv'; did you mean 'dev'?
      ret = ds->drv->ipv4_fib_prepare(ds, p->port, fib4, trans);
              ^~
   net/dsa/slave.c:351:11: error: 'struct dsa_switch' has no member named 'drv'; did you mean 'dev'?
      ret = ds->drv->ipv4_fib_add(ds, p->port, fib4, trans);
              ^~
   net/dsa/slave.c: In function 'dsa_slave_ipv4_fib_del':
   net/dsa/slave.c:363:8: error: 'struct dsa_switch' has no member named 'drv'; did you mean 'dev'?
     if (ds->drv->ipv4_fib_del)
           ^~
   net/dsa/slave.c:364:11: error: 'struct dsa_switch' has no member named 'drv'; did you mean 'dev'?
      ret = ds->drv->ipv4_fib_del(ds, p->port, fib4);
              ^~

vim +345 net/dsa/slave.c

   339					  struct switchdev_trans *trans)
   340	{
   341		struct dsa_slave_priv *p = netdev_priv(dev);
   342		struct dsa_switch *ds = p->parent;
   343		int ret;
   344	
 > 345		if (!ds->drv->ipv4_fib_prepare || !ds->drv->ipv4_fib_add)
   346			return -EOPNOTSUPP;
   347	
   348		if (switchdev_trans_ph_prepare(trans))

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