[PATCH v2] riscv: suspend: Add syscore ops for suspend

[kernel test robot]

Hi Nick,

kernel test robot noticed the following build warnings:

[auto build test WARNING on linus/master]
[also build test WARNING on v6.5-rc7 next-20230822]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Nick-Hu/riscv-suspend-Add-syscore-ops-for-suspend/20230822-135024
base:   linus/master
patch link:    https://lore.kernel.org/r/20230822054739.33552-1-nick.hu%40sifive.com
patch subject: [PATCH v2] riscv: suspend: Add syscore ops for suspend
config: riscv-randconfig-r121-20230822 (https://download.01.org/0day-ci/archive/20230823/202308230107.1L1ahyas-lkp@intel.com/config)
compiler: riscv64-linux-gcc (GCC) 13.2.0
reproduce: (https://download.01.org/0day-ci/archive/20230823/202308230107.1L1ahyas-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp at intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202308230107.1L1ahyas-lkp@intel.com/

All warnings (new ones prefixed by >>):

   arch/riscv/kernel/suspend.c: In function 'riscv_cpu_resume':
>> arch/riscv/kernel/suspend.c:114:25: warning: unused variable 'regs' [-Wunused-variable]
     114 |         struct pt_regs *regs = task_pt_regs(cur_task);
         |                         ^~~~


vim +/regs +114 arch/riscv/kernel/suspend.c

   110	
   111	static void riscv_cpu_resume(void)
   112	{
   113		struct task_struct *cur_task = get_current();
 > 114		struct pt_regs *regs = task_pt_regs(cur_task);
   115	
   116		if (has_fpu())
   117			fstate_restore(cur_task, regs);
   118		if (has_vector())
   119			riscv_v_vstate_restore(cur_task, regs);
   120	}
   121	

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