[openeuler:OLK-6.6 1474/1474] security/integrity/ima/ima_tpm.c:19:6: warning: no previous prototype for 'ima_pcrread'

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

Hi GONG,

FYI, the error/warning was bisected to this commit, please ignore it if it's irrelevant.

tree:   https://gitee.com/openeuler/kernel.git OLK-6.6
head:   7c547c6bbe6b6a9cedf63d7cdadb2529404df633
commit: 40151ef24c1a0f35c5e0442834eb776877e66683 [1474/1474] ima: rot: Prepare TPM as an RoT
config: loongarch-allmodconfig (https://download.01.org/0day-ci/archive/20241117/202411170203.cd5LERnD-lkp@intel.com/config)
compiler: loongarch64-linux-gcc (GCC) 14.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241117/202411170203.cd5LERnD-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/202411170203.cd5LERnD-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> security/integrity/ima/ima_tpm.c:19:6: warning: no previous prototype for 'ima_pcrread' [-Wmissing-prototypes]
      19 | void ima_pcrread(u32 idx, struct tpm_digest *d)
         |      ^~~~~~~~~~~
   security/integrity/ima/ima_tpm.c:28:5: warning: no previous prototype for 'ima_pcr_extend' [-Wmissing-prototypes]
      28 | int ima_pcr_extend(struct tpm_digest *digests_arg, int pcr)
         |     ^~~~~~~~~~~~~~
>> security/integrity/ima/ima_tpm.c:41:5: warning: no previous prototype for 'ima_tpm_init' [-Wmissing-prototypes]
      41 | int ima_tpm_init(struct ima_rot *rot)
         |     ^~~~~~~~~~~~
>> security/integrity/ima/ima_tpm.c:53:5: warning: no previous prototype for 'ima_tpm_extend' [-Wmissing-prototypes]
      53 | int ima_tpm_extend(struct tpm_digest *digests_arg, const void *args)
         |     ^~~~~~~~~~~~~~
>> security/integrity/ima/ima_tpm.c:60:5: warning: no previous prototype for 'ima_tpm_calc_boot_aggregate' [-Wmissing-prototypes]
      60 | int ima_tpm_calc_boot_aggregate(struct ima_digest_data *hash)
         |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~


vim +/ima_pcrread +19 security/integrity/ima/ima_tpm.c

    18	
  > 19	void ima_pcrread(u32 idx, struct tpm_digest *d)
    20	{
    21		if (!ima_tpm_chip)
    22			return;
    23	
    24		if (tpm_pcr_read(ima_tpm_chip, idx, d) != 0)
    25			pr_err("Error Communicating to TPM chip\n");
    26	}
    27	
    28	int ima_pcr_extend(struct tpm_digest *digests_arg, int pcr)
    29	{
    30		int result = 0;
    31	
    32		if (!ima_tpm_chip)
    33			return result;
    34	
    35		result = tpm_pcr_extend(ima_tpm_chip, pcr, digests_arg);
    36		if (result != 0)
    37			pr_err("Error Communicating to TPM chip, result: %d\n", result);
    38		return result;
    39	}
    40	
  > 41	int ima_tpm_init(struct ima_rot *rot)
    42	{
    43		ima_tpm_chip = tpm_default_chip();
    44		if (!ima_tpm_chip)
    45			return -ENODEV;
    46	
    47		rot->nr_allocated_banks = ima_tpm_chip->nr_allocated_banks;
    48		rot->allocated_banks = ima_tpm_chip->allocated_banks;
    49	
    50		return 0;
    51	}
    52	
  > 53	int ima_tpm_extend(struct tpm_digest *digests_arg, const void *args)
    54	{
    55		const int pcr = *(const int *)args;
    56	
    57		return ima_pcr_extend(digests_arg, pcr);
    58	}
    59	
  > 60	int ima_tpm_calc_boot_aggregate(struct ima_digest_data *hash)

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