Hi Masahiro,

After merging the kbuild tree, today's linux-next build (arm
multi_v7_defconfig) produced this warning:

drivers/usb/gadget/Kconfig:487:warning: choice default symbol 'USB_ETH' is not contained in the choice

Exposed by commit

  2c37e08464a8 ("kconfig: Warn if choice default is not in choice")

Introduced by commit

  7a9618a22aad ("usb: gadget: allow to enable legacy drivers without USB_ETH")

-- 
Cheers,
Stephen Rothwell