On Tue, 2018-10-30 at 16:47 +0100, Roberto Sassu wrote:
> This patch changes the end marker of the active_banks array from
> TPM2_ALG_ERROR to zero.
The patch description is a bit off.
TPM2_ALG_ERROR is defined as zero. Since tpm_chip_alloc() calls
kzalloc to allocate the structure, there is no need to explicitly set
the active_banks end marker to TPM2_ALG_ERROR, nor is there a need to
explicitly test for the end marker.
This patch removes explicitly setting the end marker and changes the
coding style.
>
> Signed-off-by: Roberto Sassu <roberto.sassu@xxxxxxxxxx>
> ---
> drivers/char/tpm/tpm-interface.c | 2 +-
> drivers/char/tpm/tpm2-cmd.c | 3 ---
> 2 files changed, 1 insertion(+), 4 deletions(-)
>
> diff --git a/drivers/char/tpm/tpm-interface.c b/drivers/char/tpm/tpm-interface.c
> index 1a803b0cf980..f7fc4b5ee239 100644
> --- a/drivers/char/tpm/tpm-interface.c
> +++ b/drivers/char/tpm/tpm-interface.c
> @@ -1051,7 +1051,7 @@ int tpm_pcr_extend(struct tpm_chip *chip, int pcr_idx, const u8 *hash)
> memset(digest_list, 0, sizeof(digest_list));
>
> for (i = 0; i < ARRAY_SIZE(chip->active_banks) &&
> - chip->active_banks[i] != TPM2_ALG_ERROR; i++) {
> + chip->active_banks[i]; i++) {
> digest_list[i].alg_id = chip->active_banks[i];
> memcpy(digest_list[i].digest, hash, TPM_DIGEST_SIZE);
> count++;
> diff --git a/drivers/char/tpm/tpm2-cmd.c b/drivers/char/tpm/tpm2-cmd.c
> index c31b490bd41d..046c9d8f3c1e 100644
> --- a/drivers/char/tpm/tpm2-cmd.c
> +++ b/drivers/char/tpm/tpm2-cmd.c
> @@ -908,9 +908,6 @@ static ssize_t tpm2_get_pcr_allocation(struct tpm_chip *chip)
> }
>
> out:
> - if (i < ARRAY_SIZE(chip->active_banks))
> - chip->active_banks[i] = TPM2_ALG_ERROR;
> -
> tpm_buf_destroy(&buf);
>
> return rc;
