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

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Message-ID: <201905092121.mt7HZu4d%lkp@intel.com>
Date:   Thu, 9 May 2019 21:58:22 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Nathan Chancellor <natechancellor@...il.com>
Cc:     kbuild-all@...org, linux-kernel@...r.kernel.org,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: ERROR: "uio_unregister_device"
 [drivers/staging/kpc2000/kpc2000/kpc2000.ko] undefined!

Hi Nathan,

First bad commit (maybe != root cause):

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   ef75bd71c5d31dc17ae41ff8bec92630a3037d69
commit: e2a5be107f52cefb9010ccae6f569c3ddaa954cc staging: kpc2000: kpc_spi: Fix build error for {read,write}q
date:   6 days ago
config: i386-randconfig-x012-05091818 (attached as .config)
compiler: gcc-7 (Debian 7.3.0-1) 7.3.0
reproduce:
        git checkout e2a5be107f52cefb9010ccae6f569c3ddaa954cc
        # 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@...el.com>

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!

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