Re: [PATCH v5 2/2] cpufreq: airoha: Add EN7581 CPUFreq SMCCC driver

[kernel test robot <lkp@intel.com>]

Hi Christian,

kernel test robot noticed the following build errors:

[auto build test ERROR on rafael-pm/linux-next]
[also build test ERROR on rafael-pm/bleeding-edge robh/for-next linus/master v6.13-rc1 next-20241203]
[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/Christian-Marangi/cpufreq-airoha-Add-EN7581-CPUFreq-SMCCC-driver/20241204-113105
base:   https://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm.git linux-next
patch link:    https://lore.kernel.org/r/20241203163158.580-2-ansuelsmth%40gmail.com
patch subject: [PATCH v5 2/2] cpufreq: airoha: Add EN7581 CPUFreq SMCCC driver
config: arm-randconfig-003 (https://download.01.org/0day-ci/archive/20241204/202412041929.8aCqrGnO-lkp@intel.com/config)
compiler: clang version 20.0.0git (https://github.com/llvm/llvm-project 592c0fe55f6d9a811028b5f3507be91458ab2713)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241204/202412041929.8aCqrGnO-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@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202412041929.8aCqrGnO-lkp@intel.com/

All errors (new ones prefixed by >>):

>> drivers/cpufreq/airoha-cpufreq.c:41:34: error: variable has incomplete type 'const struct arm_smccc_1_2_regs'
      41 |         const struct arm_smccc_1_2_regs args = {
         |                                         ^
   drivers/cpufreq/airoha-cpufreq.c:41:15: note: forward declaration of 'struct arm_smccc_1_2_regs'
      41 |         const struct arm_smccc_1_2_regs args = {
         |                      ^
>> drivers/cpufreq/airoha-cpufreq.c:45:28: error: variable has incomplete type 'struct arm_smccc_1_2_regs'
      45 |         struct arm_smccc_1_2_regs res;
         |                                   ^
   drivers/cpufreq/airoha-cpufreq.c:41:15: note: forward declaration of 'struct arm_smccc_1_2_regs'
      41 |         const struct arm_smccc_1_2_regs args = {
         |                      ^
>> drivers/cpufreq/airoha-cpufreq.c:47:2: error: call to undeclared function 'arm_smccc_1_2_smc'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
      47 |         arm_smccc_1_2_smc(&args, &res);
         |         ^
   drivers/cpufreq/airoha-cpufreq.c:81:34: error: variable has incomplete type 'const struct arm_smccc_1_2_regs'
      81 |         const struct arm_smccc_1_2_regs args = {
         |                                         ^
   drivers/cpufreq/airoha-cpufreq.c:81:15: note: forward declaration of 'struct arm_smccc_1_2_regs'
      81 |         const struct arm_smccc_1_2_regs args = {
         |                      ^
   drivers/cpufreq/airoha-cpufreq.c:86:28: error: variable has incomplete type 'struct arm_smccc_1_2_regs'
      86 |         struct arm_smccc_1_2_regs res;
         |                                   ^
   drivers/cpufreq/airoha-cpufreq.c:81:15: note: forward declaration of 'struct arm_smccc_1_2_regs'
      81 |         const struct arm_smccc_1_2_regs args = {
         |                      ^
   drivers/cpufreq/airoha-cpufreq.c:88:2: error: call to undeclared function 'arm_smccc_1_2_smc'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
      88 |         arm_smccc_1_2_smc(&args, &res);
         |         ^
   6 errors generated.


vim +41 drivers/cpufreq/airoha-cpufreq.c

    37	
    38	static unsigned long airoha_cpufreq_clk_get(struct clk_hw *hw,
    39						    unsigned long parent_rate)
    40	{
  > 41		const struct arm_smccc_1_2_regs args = {
    42			.a0 = AIROHA_SIP_AVS_HANDLE,
    43			.a1 = AIROHA_AVS_OP_GET_FREQ,
    44		};
  > 45		struct arm_smccc_1_2_regs res;
    46	
  > 47		arm_smccc_1_2_smc(&args, &res);
    48	
    49		/* SMCCC returns freq in MHz */
    50		return (int)(res.a0 * 1000 * 1000);
    51	}
    52	

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