Hi Qais,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on linus/master]
[also build test ERROR on v5.4-rc5 next-20191031]
[if your patch is applied to the wrong git tree, please drop us a note to help
improve the system. BTW, we also suggest to use '--base' option to specify the
base tree in git format-patch, please see https://stackoverflow.com/a/37406982]

url:    https://github.com/0day-ci/linux/commits/Qais-Yousef/arm64-hibernate-c-create-a-new-function-to-handle-cpu_up-sleep_cpu/20191102-053138
base:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 0dbe6cb8f7e05bc9611602ef45980a6c57b245a3
config: ia64-allmodconfig (attached as .config)
compiler: ia64-linux-gcc (GCC) 7.4.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        GCC_VERSION=7.4.0 make.cross ARCH=ia64 

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

All errors (new ones prefixed by >>):

   arch/ia64/kernel/process.c: In function 'machine_shutdown':
>> arch/ia64/kernel/process.c:651:2: error: implicit declaration of function 'freeze_secondary_cpus'; did you mean 'suspend_enable_secondary_cpus'? [-Werror=implicit-function-declaration]
     freeze_secondary_cpus(smp_processor_id());
     ^~~~~~~~~~~~~~~~~~~~~
     suspend_enable_secondary_cpus
   cc1: some warnings being treated as errors

vim +651 arch/ia64/kernel/process.c

   646	
   647	void machine_shutdown(void)
   648	{
   649	#ifdef CONFIG_HOTPLUG_CPU
   650		/* TODO: Can we use disable_nonboot_cpus()? */
 > 651		freeze_secondary_cpus(smp_processor_id());
   652	#endif
   653	#ifdef CONFIG_KEXEC
   654		kexec_disable_iosapic();
   655	#endif
   656	}
   657	

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