Hi Thara,

I love your patch! Perhaps something to improve:

[auto build test WARNING on robh/for-next]
[also build test WARNING on pm/linux-next linus/master v5.13-rc5 next-20210608]
[cannot apply to thermal/next]
[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]

url:    https://github.com/0day-ci/linux/commits/Thara-Gopinath/Introduce-LMh-driver-for-Qualcomm-SoCs/20210609-063135
base:   https://git.kernel.org/pub/scm/linux/kernel/git/robh/linux.git for-next
config: powerpc-randconfig-r024-20210608 (attached as .config)
compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project d2012d965d60c3258b3a69d024491698f8aec386)
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
        # install powerpc cross compiling tool for clang build
        # apt-get install binutils-powerpc-linux-gnu
        # https://github.com/0day-ci/linux/commit/bd39209abfb69da45acdc24c969d69620106f24e
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Thara-Gopinath/Introduce-LMh-driver-for-Qualcomm-SoCs/20210609-063135
        git checkout bd39209abfb69da45acdc24c969d69620106f24e
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=powerpc 

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

All warnings (new ones prefixed by >>):

   In file included from drivers/mmc/host/sdhci-msm.c:8:
   In file included from include/linux/module.h:12:
   In file included from include/linux/list.h:9:
   In file included from include/linux/kernel.h:12:
   In file included from include/linux/bitops.h:32:
   In file included from arch/powerpc/include/asm/bitops.h:62:
   arch/powerpc/include/asm/barrier.h:49:9: warning: '__lwsync' macro redefined [-Wmacro-redefined]
   #define __lwsync()      __asm__ __volatile__ (stringify_in_c(LWSYNC) : : :"memory")
           ^
   <built-in>:308:9: note: previous definition is here
   #define __lwsync __builtin_ppc_lwsync
           ^
   In file included from drivers/mmc/host/sdhci-msm.c:16:
>> include/linux/qcom_scm.h:180:5: warning: no previous prototype for function 'qcom_scm_lmh_dcvsh' [-Wmissing-prototypes]
   int qcom_scm_lmh_dcvsh(u32 *payload, u32 payload_size, u64 limit_node,
       ^
   include/linux/qcom_scm.h:180:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   int qcom_scm_lmh_dcvsh(u32 *payload, u32 payload_size, u64 limit_node,
   ^
   static 
>> include/linux/qcom_scm.h:183:5: warning: no previous prototype for function 'qcom_scm_lmh_profile_change' [-Wmissing-prototypes]
   int qcom_scm_lmh_profile_change(u32 profile_id) { return -ENODEV; }
       ^
   include/linux/qcom_scm.h:183:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   int qcom_scm_lmh_profile_change(u32 profile_id) { return -ENODEV; }
   ^
   static 
>> include/linux/qcom_scm.h:185:6: warning: no previous prototype for function 'qcom_scm_lmh_dcvsh_available' [-Wmissing-prototypes]
   bool qcom_scm_lmh_dcvsh_available(void) { return -ENODEV; }
        ^
   include/linux/qcom_scm.h:185:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   bool qcom_scm_lmh_dcvsh_available(void) { return -ENODEV; }
   ^
   static 
   4 warnings generated.

Kconfig warnings: (for reference only)
   WARNING: unmet direct dependencies detected for HOTPLUG_CPU
   Depends on SMP && (PPC_PSERIES || PPC_PMAC || PPC_POWERNV || FSL_SOC_BOOKE
   Selected by
   - PM_SLEEP_SMP && SMP && (ARCH_SUSPEND_POSSIBLE || ARCH_HIBERNATION_POSSIBLE && PM_SLEEP


vim +/qcom_scm_lmh_dcvsh +180 include/linux/qcom_scm.h

   140	
   141	static inline int qcom_scm_io_readl(phys_addr_t addr, unsigned int *val)
   142			{ return -ENODEV; }
   143	static inline int qcom_scm_io_writel(phys_addr_t addr, unsigned int val)
   144			{ return -ENODEV; }
   145	
   146	static inline bool qcom_scm_restore_sec_cfg_available(void) { return false; }
   147	static inline int qcom_scm_restore_sec_cfg(u32 device_id, u32 spare)
   148			{ return -ENODEV; }
   149	static inline int qcom_scm_iommu_secure_ptbl_size(u32 spare, size_t *size)
   150			{ return -ENODEV; }
   151	static inline int qcom_scm_iommu_secure_ptbl_init(u64 addr, u32 size, u32 spare)
   152			{ return -ENODEV; }
   153	extern inline int qcom_scm_mem_protect_video_var(u32 cp_start, u32 cp_size,
   154							 u32 cp_nonpixel_start,
   155							 u32 cp_nonpixel_size)
   156			{ return -ENODEV; }
   157	static inline int qcom_scm_assign_mem(phys_addr_t mem_addr, size_t mem_sz,
   158			unsigned int *src, const struct qcom_scm_vmperm *newvm,
   159			unsigned int dest_cnt) { return -ENODEV; }
   160	
   161	static inline bool qcom_scm_ocmem_lock_available(void) { return false; }
   162	static inline int qcom_scm_ocmem_lock(enum qcom_scm_ocmem_client id, u32 offset,
   163			u32 size, u32 mode) { return -ENODEV; }
   164	static inline int qcom_scm_ocmem_unlock(enum qcom_scm_ocmem_client id,
   165			u32 offset, u32 size) { return -ENODEV; }
   166	
   167	static inline bool qcom_scm_ice_available(void) { return false; }
   168	static inline int qcom_scm_ice_invalidate_key(u32 index) { return -ENODEV; }
   169	static inline int qcom_scm_ice_set_key(u32 index, const u8 *key, u32 key_size,
   170					       enum qcom_scm_ice_cipher cipher,
   171					       u32 data_unit_size) { return -ENODEV; }
   172	
   173	static inline bool qcom_scm_hdcp_available(void) { return false; }
   174	static inline int qcom_scm_hdcp_req(struct qcom_scm_hdcp_req *req, u32 req_cnt,
   175			u32 *resp) { return -ENODEV; }
   176	
   177	static inline int qcom_scm_qsmmu500_wait_safe_toggle(bool en)
   178			{ return -ENODEV; }
   179	
 > 180	int qcom_scm_lmh_dcvsh(u32 *payload, u32 payload_size, u64 limit_node,
   181			       u32 node_id, u64 version)
   182			{ return -ENODEV; }
 > 183	int qcom_scm_lmh_profile_change(u32 profile_id) { return -ENODEV; }
   184	
 > 185	bool qcom_scm_lmh_dcvsh_available(void) { return -ENODEV; }

---
0-DAY CI Kernel Test Service, Intel Corporation
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