tpm: Introduce flag TPM_TRANSMIT_RAW

Introduce the flag TPM_TRANSMIT_RAW that allows us to transmit a command without recursing into the requesting of locality. Signed-off-by: Stefan Berger <[email protected]> Reviewed-by: Jarkko Sakkinen <[email protected]> Signed-off-by: Jarkko Sakkinen <[email protected]>
devinus · Jun 13, 2017 · 85ab3bf · 85ab3bf
1 parent 402149c
commit 85ab3bf
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Showing 2 changed files with 3 additions and 1 deletion.
diff --git a/drivers/char/tpm/tpm-interface.c b/drivers/char/tpm/tpm-interface.c
@@ -416,7 +416,8 @@ ssize_t tpm_transmit(struct tpm_chip *chip, struct tpm_space *space,
 	/* Store the decision as chip->locality will be changed. */
 	need_locality = chip->locality == -1;
 
-	if (need_locality && chip->ops->request_locality)  {
+	if (!(flags & TPM_TRANSMIT_RAW) &&
+	    need_locality && chip->ops->request_locality)  {
 		rc = chip->ops->request_locality(chip, 0);
 		if (rc < 0)
 			goto out_no_locality;

diff --git a/drivers/char/tpm/tpm.h b/drivers/char/tpm/tpm.h
@@ -506,6 +506,7 @@ extern struct idr dev_nums_idr;
 
 enum tpm_transmit_flags {
 	TPM_TRANSMIT_UNLOCKED	= BIT(0),
+	TPM_TRANSMIT_RAW	= BIT(1),
 };
 
 ssize_t tpm_transmit(struct tpm_chip *chip, struct tpm_space *space,