snps_udc_plat.c:undefined reference to `extcon_unregister_notifier'

From: kbuild test robot
Date: Mon Sep 11 2017 - 09:38:19 EST

tree: master
head: f007cad159e99fa2acd3b2e9364fbb32ad28b971
commit: 1b9f35adb0ffa143c7972a8459d6979c77d6c3c0 usb: gadget: udc: Add Synopsys UDC Platform driver
date: 3 months ago
config: x86_64-randconfig-b0-09112030 (attached as .config)
compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901
git checkout 1b9f35adb0ffa143c7972a8459d6979c77d6c3c0
# save the attached .config to linux build tree
make ARCH=x86_64

All errors (new ones prefixed by >>):

drivers/built-in.o: In function `udc_plat_remove':
>> snps_udc_plat.c:(.text+0x2c4060): undefined reference to `extcon_unregister_notifier'
drivers/built-in.o: In function `udc_plat_probe':
>> snps_udc_plat.c:(.text+0x2c438c): undefined reference to `extcon_get_edev_by_phandle'
>> snps_udc_plat.c:(.text+0x2c43f2): undefined reference to `extcon_register_notifier'
>> snps_udc_plat.c:(.text+0x2c4416): undefined reference to `extcon_get_state'
snps_udc_plat.c:(.text+0x2c44f7): undefined reference to `extcon_unregister_notifier'

0-DAY kernel test infrastructure Open Source Technology Center Intel Corporation

Attachment: .config.gz
Description: application/gzip