tree: https://android.googlesource.com/kernel/common android-mainline head: 0c8ec66904ac0a02c5ca7d0498308d90356f81c7 commit: 6a1652effdb83c2f566c17ea2ad65d43652871ae [5/6] ANDROID: firmware: QCOM_SCM: Allow qcom_scm driver to be loadable as a permenent module config: arm-randconfig-r024-20200513 (attached as .config) compiler: arm-linux-gnueabi-gcc (GCC) 9.3.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross git checkout 6a1652effdb83c2f566c17ea2ad65d43652871ae # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day GCC_VERSION=9.3.0 make.cross ARCH=arm If you fix the issue, kindly add following tag as appropriate Reported-by: kbuild test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): arm-linux-gnueabi-ld: drivers/firmware/qcom_scm-smc.o: in function `__scm_smc_do_quirk': arm-linux-gnueabi-ld: drivers/firmware/qcom_scm-legacy.o: in function `__scm_legacy_do': arm-linux-gnueabi-ld: drivers/firmware/qcom_scm-legacy.o: in function `scm_legacy_call_atomic': drivers/firmware/qcom_scm-legacy.c:230: undefined reference to `__arm_smccc_smc' vim +45 drivers/firmware/qcom_scm-smc.c 6b1751a86ce2eb drivers/firmware/qcom_scm-64.c Kumar Gala 2016-06-03 35 3f951ea627dae8 drivers/firmware/qcom_scm-64.c Elliot Berman 2020-01-07 36 static void __scm_smc_do_quirk(const struct arm_smccc_args *smc, 3f951ea627dae8 drivers/firmware/qcom_scm-64.c Elliot Berman 2020-01-07 37 struct arm_smccc_res *res) 1a5ea3b7a6ac6c drivers/firmware/qcom_scm-64.c Vivek Gautam 2019-09-20 38 { 3f951ea627dae8 drivers/firmware/qcom_scm-64.c Elliot Berman 2020-01-07 39 unsigned long a0 = smc->args[0]; 1a5ea3b7a6ac6c drivers/firmware/qcom_scm-64.c Vivek Gautam 2019-09-20 40 struct arm_smccc_quirk quirk = { .id = ARM_SMCCC_QUIRK_QCOM_A6 }; 1a5ea3b7a6ac6c drivers/firmware/qcom_scm-64.c Vivek Gautam 2019-09-20 41 1a5ea3b7a6ac6c drivers/firmware/qcom_scm-64.c Vivek Gautam 2019-09-20 42 quirk.state.a6 = 0; 1a5ea3b7a6ac6c drivers/firmware/qcom_scm-64.c Vivek Gautam 2019-09-20 43 1a5ea3b7a6ac6c drivers/firmware/qcom_scm-64.c Vivek Gautam 2019-09-20 44 do { 3f951ea627dae8 drivers/firmware/qcom_scm-64.c Elliot Berman 2020-01-07 @45 arm_smccc_smc_quirk(a0, smc->args[1], smc->args[2], 3f951ea627dae8 drivers/firmware/qcom_scm-64.c Elliot Berman 2020-01-07 46 smc->args[3], smc->args[4], smc->args[5], 3f951ea627dae8 drivers/firmware/qcom_scm-64.c Elliot Berman 2020-01-07 47 quirk.state.a6, smc->args[7], res, &quirk); 1a5ea3b7a6ac6c drivers/firmware/qcom_scm-64.c Vivek Gautam 2019-09-20 48 1a5ea3b7a6ac6c drivers/firmware/qcom_scm-64.c Vivek Gautam 2019-09-20 49 if (res->a0 == QCOM_SCM_INTERRUPTED) 3f951ea627dae8 drivers/firmware/qcom_scm-64.c Elliot Berman 2020-01-07 50 a0 = res->a0; 1a5ea3b7a6ac6c drivers/firmware/qcom_scm-64.c Vivek Gautam 2019-09-20 51 1a5ea3b7a6ac6c drivers/firmware/qcom_scm-64.c Vivek Gautam 2019-09-20 52 } while (res->a0 == QCOM_SCM_INTERRUPTED); 1a5ea3b7a6ac6c drivers/firmware/qcom_scm-64.c Vivek Gautam 2019-09-20 53 } 1a5ea3b7a6ac6c drivers/firmware/qcom_scm-64.c Vivek Gautam 2019-09-20 54 :::::: The code at line 45 was first introduced by commit :::::: 3f951ea627dae878e353c51dfeb10baaccb10101 firmware: qcom_scm-64: Move SMC register filling to qcom_scm_call_smccc :::::: TO: Elliot Berman <eberman(a)codeaurora.org&gt; :::::: CC: Bjorn Andersson <bjorn.andersson(a)linaro.org&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org