Hi Andrea,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on net-next/master]
[also build test ERROR on v4.18-rc1 next-20180622]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url:    https://github.com/0day-ci/linux/commits/Andrea-Greco/arcnet-leds-Removed-leds-dependecy/20180611-222941
config: x86_64-randconfig-s4-06220549 (attached as .config)
compiler: gcc-7 (Debian 7.3.0-16) 7.3.0
reproduce:
        # save the attached .config to linux build tree
        make ARCH=x86_64 

All errors (new ones prefixed by >>):

>> ERROR: "com20020_found" [drivers/net/arcnet/com20020-io.ko] undefined!
>> ERROR: "com20020_check" [drivers/net/arcnet/com20020-io.ko] undefined!
>> ERROR: "com20020_netdev_ops" [drivers/net/arcnet/com20020-io.ko] undefined!

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