[kbuild-all] [mptcp:export 1210/1266] net.c:undefined reference to `wwan_unregister_ops'

tree: https://github.com/multipath-tcp/mptcp_net-next.git export head: 8f373ade1f521f6f7e554a9c8c7a2e9af10f84ad commit: 13adac032982c61bb590669e8e87e51558917ca1 [1210/1266] net: mhi_net: Register wwan_ops for link creation config: arm-randconfig-p001-20210613 (attached as .config) compiler: arm-linux-gnueabi-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://github.com/multipath-tcp/mptcp_net-next/commit/13adac032982c61bb5... git remote add mptcp https://github.com/multipath-tcp/mptcp_net-next.git git fetch --no-tags mptcp export git checkout 13adac032982c61bb590669e8e87e51558917ca1 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arm If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): arch/arm/kernel/traps.o:(.text.fixup+0x8): relocation truncated to fit: R_ARM_JUMP24 against `.text.unlikely' arm-linux-gnueabi-ld: drivers/net/mhi/net.o: in function `mhi_net_remove': arm-linux-gnueabi-ld: drivers/net/mhi/net.o: in function `mhi_net_probe': Kconfig warnings: (for reference only) WARNING: unmet direct dependencies detected for WWAN_CORE Depends on NETDEVICES && WWAN Selected by - MHI_NET && NETDEVICES && NET_CORE && MHI_BUS --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org