Re: [PATCH v3 4/4] Hook into set_rx_mode to admit multicast traffic

Hi Miguel,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on net-next/master]
[also build test ERROR on v4.18-rc4 next-20180706]
[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/Miguel-Rodr-guez-P-rez/usbnet-Admit-multicast-traffic-in-cdc-ncm-devices/20180701-170924
config: x86_64-randconfig-u0-07091340 (attached as .config)
compiler: gcc-5 (Debian 5.5.0-3) 5.4.1 20171010
reproduce:
        # save the attached .config to linux build tree
        make ARCH=x86_64 

All errors (new ones prefixed by >>):

quoted

drivers/net/usb/cdc_ncm.o:(.rodata+0x338): undefined reference to `usbnet_cdc_update_filter'

   drivers/net/usb/cdc_ncm.o:(.rodata+0x3d8): undefined reference to `usbnet_cdc_update_filter'
   drivers/net/usb/cdc_ncm.o:(.rodata+0x478): undefined reference to `usbnet_cdc_update_filter'

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