From: Tom Rix <trix@xxxxxxxxxx> A link error ld: drivers/net/usb/cdc_ncm.o: undefined reference to `usbnet_cdc_update_filter' usbnet_cdc_update_filter is defined in cdc_ether.c Building of cdc_ether.o is controlled by USB_NET_CDCETHER Building of cdc_ncm.o is controlled by USB_NET_CDC_NCM So add a select USB_NET_CDCETHER to USB_NET_CDC_NCM Signed-off-by: Tom Rix <trix@xxxxxxxxxx> --- drivers/net/usb/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/net/usb/Kconfig b/drivers/net/usb/Kconfig index a7fbc3ccd29e..c7bcfca7d70b 100644 --- a/drivers/net/usb/Kconfig +++ b/drivers/net/usb/Kconfig @@ -252,6 +252,7 @@ config USB_NET_CDC_EEM config USB_NET_CDC_NCM tristate "CDC NCM support" depends on USB_USBNET + select USB_NET_CDCETHER default y help This driver provides support for CDC NCM (Network Control Model -- 2.18.1