Re: [PATCH bpf-next v6 12/23] HID: initial BPF implementation

[kernel test robot <lkp@intel.com>]

Hi Benjamin,

I love your patch! Yet something to improve:

[auto build test ERROR on bpf-next/master]

url:    https://github.com/intel-lab-lkp/linux/commits/Benjamin-Tissoires/Introduce-eBPF-support-for-HID-devices/20220712-230852
base:   https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git master
config: arm-vexpress_defconfig (https://download.01.org/0day-ci/archive/20220715/202207150008.O4t08On6-lkp@intel.com/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 5e61b9c556267086ef9b743a0b57df302eef831b)
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
        # install arm cross compiling tool for clang build
        # apt-get install binutils-arm-linux-gnueabi
        # https://github.com/intel-lab-lkp/linux/commit/57eb5074a35029f30cc13ed3a526b3342b169788
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Benjamin-Tissoires/Introduce-eBPF-support-for-HID-devices/20220712-230852
        git checkout 57eb5074a35029f30cc13ed3a526b3342b169788
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm SHELL=/bin/bash

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

All errors (new ones prefixed by >>):

>> ld.lld: error: undefined symbol: dispatch_hid_bpf_device_event
   >>> referenced by hid-core.c
   >>> hid/hid-core.o:(hid_input_report) in archive drivers/built-in.a
--
>> ld.lld: error: undefined symbol: hid_bpf_device_init
   >>> referenced by hid-core.c
   >>> hid/hid-core.o:(hid_allocate_device) in archive drivers/built-in.a
--
>> ld.lld: error: undefined symbol: hid_bpf_destroy_device
   >>> referenced by hid-core.c
   >>> hid/hid-core.o:(hid_destroy_device) in archive drivers/built-in.a

-- 
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