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tpm: silence an array overflow warning 

We should check that we're within bounds first before checking that
"chip->active_banks[i] != TPM2_ALG_ERROR" so I've re-ordered the two
checks.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
This commit is contained in:
Dan Carpenter 2017-02-03 13:30:40 +03:00 committed by Jarkko Sakkinen
parent a118cf2a5b
commit 70ea163699
1 changed files with 2 additions and 2 deletions
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4
drivers/char/tpm/tpm-interface.c
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@ -800,8 +800,8 @@ int tpm_pcr_extend(u32 chip_num, int pcr_idx, const u8 *hash)
if (chip->flags & TPM_CHIP_FLAG_TPM2) {
memset(digest_list, 0, sizeof(digest_list));
for (i = 0; chip->active_banks[i] != TPM2_ALG_ERROR &&
i < ARRAY_SIZE(chip->active_banks); i++) {
for (i = 0; i < ARRAY_SIZE(chip->active_banks) &&
chip->active_banks[i] != TPM2_ALG_ERROR; i++) {
digest_list[i].alg_id = chip->active_banks[i];
memcpy(digest_list[i].digest, hash, TPM_DIGEST_SIZE);
count++;