Hi Baolin,

[auto build test ERROR on v4.5-rc7]
[also build test ERROR on next-20160316]
[if your patch is applied to the wrong git tree, please drop us a note to help improving the system]

url:    https://github.com/0day-ci/linux/commits/Baolin-Wang/Introduce-usb-charger-framework-to-deal-with-the-usb-gadget-power-negotation/20160316-195102
config: x86_64-allmodconfig (attached as .config)
reproduce:
        # save the attached .config to linux build tree
        make ARCH=x86_64 

All errors (new ones prefixed by >>):

quoted

ERROR: "usb_charger_init" [drivers/usb/gadget/udc/udc-core.ko] undefined!
ERROR: "usb_charger_plug_by_gadget" [drivers/usb/gadget/udc/udc-core.ko] undefined!
ERROR: "usb_charger_exit" [drivers/usb/gadget/udc/udc-core.ko] undefined!
ERROR: "usb_charger_set_cur_limit_by_type" [drivers/usb/gadget/libcomposite.ko] undefined!
ERROR: "usb_charger_detect_type" [drivers/usb/gadget/libcomposite.ko] undefined!
ERROR: "usb_charger_set_cur_limit_by_type" [drivers/usb/gadget/legacy/gadgetfs.ko] undefined!
ERROR: "usb_charger_detect_type" [drivers/usb/gadget/legacy/gadgetfs.ko] undefined!

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