Hi Stephan,

FYI, the error/warning still remains.

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   7a7fd0de4a9804299793e564a555a49c1fc924cb
commit: a871be6b8eee13a35a3e8e56c62770ef17ee9220 cpuidle: Convert Qualcomm SPM driver to a generic CPUidle driver
date:   9 months ago
config: arm-randconfig-m031-20210302 (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://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=a871be6b8eee13a35a3e8e56c62770ef17ee9220
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout a871be6b8eee13a35a3e8e56c62770ef17ee9220
        # 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@intel.com>

All errors (new ones prefixed by >>):

   arm-linux-gnueabi-ld: arch/arm/kernel/sleep.o: in function `__cpu_suspend':
>> (.text+0x60): undefined reference to `cpu_sa110_suspend_size'
   arm-linux-gnueabi-ld: arch/arm/kernel/suspend.o: in function `__cpu_suspend_save':
>> suspend.c:(.text+0xa8): undefined reference to `cpu_sa110_do_suspend'
>> arm-linux-gnueabi-ld: suspend.c:(.text+0xcc): undefined reference to `cpu_sa110_do_resume'
   arm-linux-gnueabi-ld: drivers/cpuidle/cpuidle-qcom-spm.o: in function `spm_dev_probe':
   cpuidle-qcom-spm.c:(.text+0x320): undefined reference to `cpu_resume_arm'
   arm-linux-gnueabi-ld: drivers/firmware/qcom_scm-smc.o: in function `__scm_smc_do_quirk':
   qcom_scm-smc.c:(.text+0x54): undefined reference to `__arm_smccc_smc'
   arm-linux-gnueabi-ld: drivers/firmware/qcom_scm-legacy.o: in function `scm_legacy_call':
   qcom_scm-legacy.c:(.text+0x164): undefined reference to `__arm_smccc_smc'
   arm-linux-gnueabi-ld: drivers/firmware/qcom_scm-legacy.o: in function `scm_legacy_call_atomic':
   qcom_scm-legacy.c:(.text+0x3bc): undefined reference to `__arm_smccc_smc'

Kconfig warnings: (for reference only)
   WARNING: unmet direct dependencies detected for UIO
   Depends on MMU
   Selected by
   - CNIC && NETDEVICES && ETHERNET && NET_VENDOR_BROADCOM && PCI && (IPV6 || IPV6
   WARNING: unmet direct dependencies detected for ARM_CPU_SUSPEND
   Depends on ARCH_SUSPEND_POSSIBLE
   Selected by
   - ARM_QCOM_SPM_CPUIDLE && CPU_IDLE && (ARM || ARM64) && (ARCH_QCOM || COMPILE_TEST && !ARM64

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