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tpm2-sessions: Open code tpm_buf_append_hmac_session()

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Open code 'tpm_buf_append_hmac_session_opt' to the call site, as it only
masks a call sequence and does otherwise nothing particularly useful.

Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@opinsys.com>
Reviewed-by: Jonathan McDowell <noodles@meta.com>
This commit is contained in:
Jarkko Sakkinen
2025-09-30 23:44:19 +03:00
committed by Jarkko Sakkinen
parent bc677a9216
commit b7960b9048
3 changed files with 21 additions and 28 deletions
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14
drivers/char/tpm/tpm2-cmd.c
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@@ -282,9 +282,17 @@ int tpm2_get_random(struct tpm_chip *chip, u8 *dest, size_t max)
do {
tpm_buf_reset(&buf, TPM2_ST_SESSIONS, TPM2_CC_GET_RANDOM);
tpm_buf_append_hmac_session_opt(chip, &buf, TPM2_SA_ENCRYPT
| TPM2_SA_CONTINUE_SESSION,
NULL, 0);
if (tpm2_chip_auth(chip)) {
tpm_buf_append_hmac_session(chip, &buf,
TPM2_SA_ENCRYPT |
TPM2_SA_CONTINUE_SESSION,
NULL, 0);
} else {
offset = buf.handles * 4 + TPM_HEADER_SIZE;
head = (struct tpm_header *)buf.data;
if (tpm_buf_length(&buf) == offset)
head->tag = cpu_to_be16(TPM2_ST_NO_SESSIONS);
}
tpm_buf_append_u16(&buf, num_bytes);
err = tpm_buf_fill_hmac_session(chip, &buf);
if (err) {