[char-misc:char-misc-next 37/71] bcm_vk_tty.c:undefined reference to `__tty_insert_flip_char'

[char-misc:char-misc-next 37/71] bcm_vk_tty.c:undefined reference to `__tty_insert_flip_char'

[kernel test robot]

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tree:   https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc.git char-misc-next
head:   930c922a987a02936000f15ea62988b7a39c27f5
commit: 91ca10d6fa0720e35596c720e494d9c18624418a [37/71] misc: bcm-vk: add ttyVK support
config: mips-randconfig-r006-20210202 (attached as .config)
compiler: mipsel-linux-gcc (GCC) 9.3.0
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc.git/commit/?id=91ca10d6fa0720e35596c720e494d9c18624418a
        git remote add char-misc https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc.git
        git fetch --no-tags char-misc char-misc-next
        git checkout 91ca10d6fa0720e35596c720e494d9c18624418a
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=mips 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

   mipsel-linux-ld: drivers/misc/bcm-vk/bcm_vk_tty.o: in function `bcm_vk_tty_wq_handler':
>> bcm_vk_tty.c:(.text+0x2a8): undefined reference to `__tty_insert_flip_char'
>> mipsel-linux-ld: bcm_vk_tty.c:(.text+0x2c4): undefined reference to `tty_flip_buffer_push'
   mipsel-linux-ld: drivers/misc/bcm-vk/bcm_vk_tty.o: in function `bcm_vk_tty_init':
>> bcm_vk_tty.c:(.text+0x510): undefined reference to `__tty_alloc_driver'
>> mipsel-linux-ld: bcm_vk_tty.c:(.text+0x568): undefined reference to `tty_std_termios'
   mipsel-linux-ld: bcm_vk_tty.c:(.text+0x56c): undefined reference to `tty_std_termios'
>> mipsel-linux-ld: bcm_vk_tty.c:(.text+0x5b8): undefined reference to `tty_set_operations'
>> mipsel-linux-ld: bcm_vk_tty.c:(.text+0x5c0): undefined reference to `tty_register_driver'
>> mipsel-linux-ld: bcm_vk_tty.c:(.text+0x5d8): undefined reference to `tty_port_init'
>> mipsel-linux-ld: bcm_vk_tty.c:(.text+0x5ec): undefined reference to `tty_port_register_device'
   mipsel-linux-ld: bcm_vk_tty.c:(.text+0x620): undefined reference to `tty_port_init'
   mipsel-linux-ld: bcm_vk_tty.c:(.text+0x634): undefined reference to `tty_port_register_device'
>> mipsel-linux-ld: bcm_vk_tty.c:(.text+0x6fc): undefined reference to `tty_port_unregister_device'
>> mipsel-linux-ld: bcm_vk_tty.c:(.text+0x70c): undefined reference to `tty_unregister_driver'
>> mipsel-linux-ld: bcm_vk_tty.c:(.text+0x728): undefined reference to `put_tty_driver'
   mipsel-linux-ld: drivers/misc/bcm-vk/bcm_vk_tty.o: in function `bcm_vk_tty_exit':
>> bcm_vk_tty.c:(.text+0x79c): undefined reference to `tty_port_unregister_device'
>> mipsel-linux-ld: bcm_vk_tty.c:(.text+0x7a4): undefined reference to `tty_port_destroy'
   mipsel-linux-ld: bcm_vk_tty.c:(.text+0x7b8): undefined reference to `tty_port_unregister_device'
   mipsel-linux-ld: bcm_vk_tty.c:(.text+0x7c0): undefined reference to `tty_port_destroy'
   mipsel-linux-ld: bcm_vk_tty.c:(.text+0x7c8): undefined reference to `tty_unregister_driver'
   mipsel-linux-ld: bcm_vk_tty.c:(.text+0x7f0): undefined reference to `put_tty_driver'

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

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