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

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Date:   Mon, 20 May 2019 12:05:36 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     kbuild-all@...org, linux-kernel@...r.kernel.org
Subject: ERROR: "uio_unregister_device"
 [drivers/staging/kpc2000/kpc2000/kpc2000.ko] undefined!

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   a188339ca5a396acc588e5851ed7e19f66b0ebd9
commit: 7dc7967fc39af81191558f63eeaf3d2b83899b1c staging: kpc2000: add initial set of Daktronics drivers
date:   4 weeks ago
config: x86_64-randconfig-m3-05200349 (attached as .config)
compiler: gcc-7 (Debian 7.3.0-1) 7.3.0
reproduce:
        git checkout 7dc7967fc39af81191558f63eeaf3d2b83899b1c
        # save the attached .config to linux build tree
        make ARCH=x86_64 

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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0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

Download attachment ".config.gz" of type "application/gzip" (33774 bytes)