linux-kernel - ERROR: "drm_panel_of_backlight" [drivers/gpu/drm/panel/panel-leadtek-ltk500hd1829.ko] undefined!

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Date:   Sat, 15 Feb 2020 18:04:39 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Heiko Stuebner <heiko.stuebner@...obroma-systems.com>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org,
        Sam Ravnborg <sam@...nborg.org>
Subject: ERROR: "drm_panel_of_backlight"
 [drivers/gpu/drm/panel/panel-leadtek-ltk500hd1829.ko] undefined!

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   2019fc96af228b412bdb2e8e0ad4b1fc12046a51
commit: e98910bee6097b7c0f7beb76ab1d70ee52931d40 drm/panel: add panel driver for Leadtek LTK500HD1829
date:   6 weeks ago
config: i386-randconfig-c002-20200215 (attached as .config)
compiler: gcc-7 (Debian 7.5.0-4) 7.5.0
reproduce:
        git checkout e98910bee6097b7c0f7beb76ab1d70ee52931d40
        # 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: "drm_panel_of_backlight" [drivers/gpu/drm/panel/panel-xinpeng-xpp055c272.ko] undefined!
   ERROR: "drm_panel_of_backlight" [drivers/gpu/drm/panel/panel-sharp-lq101r1sx01.ko] undefined!
   ERROR: "drm_panel_of_backlight" [drivers/gpu/drm/panel/panel-seiko-43wvf1g.ko] undefined!
   ERROR: "drm_panel_of_backlight" [drivers/gpu/drm/panel/panel-ronbo-rb070d30.ko] undefined!
   ERROR: "drm_panel_of_backlight" [drivers/gpu/drm/panel/panel-raydium-rm68200.ko] undefined!
>> ERROR: "drm_panel_of_backlight" [drivers/gpu/drm/panel/panel-leadtek-ltk500hd1829.ko] undefined!
   ERROR: "drm_panel_of_backlight" [drivers/gpu/drm/panel/panel-simple.ko] undefined!
   ERROR: "drm_panel_of_backlight" [drivers/gpu/drm/panel/panel-lvds.ko] undefined!
   ERROR: "drm_panel_of_backlight" [drivers/gpu/drm/panel/panel-boe-himax8279d.ko] undefined!

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

Download attachment ".config.gz" of type "application/gzip" (31605 bytes)