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tpm: fix wrong return value in tpm_pcr_extend

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commit 29cb79795e324a8b65e7891d76f8f6ca911ba440 upstream.

For the algorithm that does not match the bank, a positive
value EINVAL is returned here. I think this is a typo error.
It is necessary to return an error value.

Cc: stable@vger.kernel.org # 5.4.x
Fixes: 9f75c82246 ("KEYS: trusted: correctly initialize digests and fix locking issue")
Signed-off-by: Tianjia Zhang <tianjia.zhang@linux.alibaba.com>
Reviewed-by: Roberto Sassu <roberto.sassu@huawei.com>
Reviewed-by: Jerry Snitselaar <jsnitsel@redhat.com>
Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Tianjia Zhang 2020-04-14 19:42:26 +08:00 • committed by Greg Kroah-Hartman
commit 16244edc3b
1 changed files with 1 additions and 1 deletions
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2
drivers/char/tpm/tpm-interface.c
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@ -322,7 +322,7 @@ int tpm_pcr_extend(struct tpm_chip *chip, u32 pcr_idx,
for (i = 0; i < chip->nr_allocated_banks; i++) {
if (digests[i].alg_id != chip->allocated_banks[i].alg_id) {
rc = EINVAL;
rc = -EINVAL;
goto out;
}
}