ERROR: "uio_unregister_device" [drivers/staging/kpc2000/kpc2000/kpc2000.ko] undefined!

From: kbuild test robot
Date: Mon May 13 2019 - 22:53:41 EST

Hi Greg,

First bad commit (maybe != root cause):

tree: master
head: 63863ee8e2f6f6ae47be3dff4af2f2806f5ca2dd
commit: 91b6cb7216cd8bad027bc9ef88e2834786c8eeaf staging: kpc2000: fix up build problems with readq()
date: 13 days ago
config: i386-randconfig-k1-05131404 (attached as .config)
compiler: gcc-7 (Debian 7.3.0-1) 7.3.0
git checkout 91b6cb7216cd8bad027bc9ef88e2834786c8eeaf
# save the attached .config to linux build tree
make ARCH=i386

If you fix the issue, kindly add following tag
Reported-by: kbuild test robot <lkp@xxxxxxxxx>

All errors (new ones prefixed by >>):

>> ERROR: "uio_unregister_device" [drivers/staging/kpc2000/kpc2000/kpc2000.ko] undefined!
>> ERROR: "__uio_register_device" [drivers/staging/kpc2000/kpc2000/kpc2000.ko] undefined!

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

Attachment: .config.gz
Description: application/gzip