[PATCH v5 1/2] tpm: Introduce flag TPM_TRANSMIT_RAW
From: Stefan Berger <hidden>
Date: 2017-05-15 16:52:33
Also in:
lkml
Subsystem:
the rest, tpm device driver · Maintainers:
Linus Torvalds, Peter Huewe, Jarkko Sakkinen
Introduce the flag TPM_TRASNMIT_RAW that allows us to transmit a command without recursing into the requesting of locality. Signed-off-by: Stefan Berger <redacted> --- drivers/char/tpm/tpm-interface.c | 3 ++- drivers/char/tpm/tpm.h | 1 + 2 files changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/char/tpm/tpm-interface.c b/drivers/char/tpm/tpm-interface.c
index 4ed08ab..2eacda2 100644
--- 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
index e81d8c7..25d9858 100644
--- a/drivers/char/tpm/tpm.h
+++ b/drivers/char/tpm/tpm.h@@ -525,6 +525,7 @@ 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,
--
2.4.3
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