adv7842.c:undefined reference to `cec_unregister_adapter'

[kbuild test robot <fengguang.wu@xxxxxxxxx>]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   b29794ec95c6856b316c2295904208bf11ffddd9
commit: 9177e51d1434076a91f9bfb693deae8b955d6d57 [media] cec: select CEC_CORE instead of depend on it
date:   4 days ago
config: i386-randconfig-b0-06090003 (attached as .config)
compiler: gcc-5 (Debian 5.4.1-2) 5.4.1 20160904
reproduce:
        git checkout 9177e51d1434076a91f9bfb693deae8b955d6d57
        # save the attached .config to linux build tree
        make ARCH=i386 

All errors (new ones prefixed by >>):

   drivers/built-in.o: In function `adv7842_unregistered':
>> adv7842.c:(.text+0x2edadd): undefined reference to `cec_unregister_adapter'
   drivers/built-in.o: In function `adv7842_registered':
>> adv7842.c:(.text+0x2edb2a): undefined reference to `cec_register_adapter'
>> adv7842.c:(.text+0x2edb57): undefined reference to `cec_delete_adapter'
   drivers/built-in.o: In function `edid_write_hdmi_segment':
>> adv7842.c:(.text+0x2ee49f): undefined reference to `cec_get_edid_phys_addr'
>> adv7842.c:(.text+0x2ee4c0): undefined reference to `cec_phys_addr_validate'
>> adv7842.c:(.text+0x2ee736): undefined reference to `cec_s_phys_addr'
   drivers/built-in.o: In function `vivid_remove':
>> vivid-core.c:(.text+0x3fc9fb): undefined reference to `cec_unregister_adapter'
   vivid-core.c:(.text+0x3fca19): undefined reference to `cec_unregister_adapter'
   drivers/built-in.o: In function `vivid_create_instance':
   vivid-core.c:(.text+0x3ffecf): undefined reference to `cec_unregister_adapter'
   vivid-core.c:(.text+0x3ffef7): undefined reference to `cec_unregister_adapter'
   drivers/built-in.o: In function `vidioc_g_edid':
>> (.text+0x405a5b): undefined reference to `cec_set_edid_phys_addr'
   drivers/built-in.o: In function `vidioc_s_edid':
>> (.text+0x40e71a): undefined reference to `cec_get_edid_phys_addr'
   drivers/built-in.o: In function `vidioc_s_edid':
>> (.text+0x40e73d): undefined reference to `cec_phys_addr_validate'
   drivers/built-in.o: In function `vidioc_s_edid':
>> (.text+0x40e7ad): undefined reference to `cec_s_phys_addr'
   drivers/built-in.o: In function `vidioc_s_edid':
>> (.text+0x40e7f8): undefined reference to `cec_phys_addr_for_input'
   drivers/built-in.o: In function `vidioc_s_edid':
   (.text+0x40e819): undefined reference to `cec_s_phys_addr'

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