[linux-next:master 13230/13643] arch/riscv/errata/andes/errata.c:46:14: warning: result of comparison of constant 9223372036854811205 with expression of type 'unsigned long' is always true

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

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head:   a47fc304d2b678db1a5d760a7d644dac9b067752
commit: f2863f30d1b05e5ecf61c063609cb974954d47f8 [13230/13643] riscv: errata: Add Andes alternative ports
config: riscv-randconfig-r015-20230902 (https://download.01.org/0day-ci/archive/20230902/202309020548.rbrIJu6S-lkp@intel.com/config)
compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project.git 4a5ac14ee968ff0ad5d2cc1ffa0299048db4c88a)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20230902/202309020548.rbrIJu6S-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/202309020548.rbrIJu6S-lkp@intel.com/

All warnings (new ones prefixed by >>):

   arch/riscv/errata/andes/errata.c:29:16: error: variable has incomplete type 'struct sbiret'
      29 |         struct sbiret ret;
         |                       ^
   arch/riscv/errata/andes/errata.c:29:9: note: forward declaration of 'struct sbiret'
      29 |         struct sbiret ret;
         |                ^
   arch/riscv/errata/andes/errata.c:35:8: error: call to undeclared function 'sbi_ecall'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
      35 |         ret = sbi_ecall(ANDESTECH_SBI_EXT_ANDES, ANDES_SBI_EXT_IOCP_SW_WORKAROUND,
         |               ^
>> arch/riscv/errata/andes/errata.c:46:14: warning: result of comparison of constant 9223372036854811205 with expression of type 'unsigned long' is always true [-Wtautological-constant-out-of-range-compare]
      46 |         if (arch_id != ANDESTECH_AX45MP_MARCHID || impid != ANDESTECH_AX45MP_MIMPID)
         |             ~~~~~~~ ^  ~~~~~~~~~~~~~~~~~~~~~~~~
   1 warning and 2 errors generated.


vim +46 arch/riscv/errata/andes/errata.c

    40	
    41	static bool errata_probe_iocp(unsigned int stage, unsigned long arch_id, unsigned long impid)
    42	{
    43		if (!IS_ENABLED(CONFIG_ERRATA_ANDES_CMO))
    44			return false;
    45	
  > 46		if (arch_id != ANDESTECH_AX45MP_MARCHID || impid != ANDESTECH_AX45MP_MIMPID)
    47			return false;
    48	
    49		if (!ax45mp_iocp_sw_workaround())
    50			return false;
    51	
    52		/* Set this just to make core cbo code happy */
    53		riscv_cbom_block_size = 1;
    54		riscv_noncoherent_supported();
    55	
    56		return true;
    57	}
    58	

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