[PATCH] tpm: Start the tpm2 before running a self test.

Hermin Anggawijaya
2023-11-22T06:57:29Z

Before sending a command to attempt the self test, the TPM
may need to be started, otherwise the self test returns
TPM2_RC_INITIALIZE value causing a log as follows:
"tpm tpm0: A TPM error (256) occurred attempting the self test".

Signed-off-by: Hermin Anggawijaya <hermin.anggawijaya@alliedtelesis.co.nz>
---
drivers/char/tpm/tpm2-cmd.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/char/tpm/tpm2-cmd.c b/drivers/char/tpm/tpm2-cmd.c
index 93545be190a5..0530f3b5f86a 100644
--- a/drivers/char/tpm/tpm2-cmd.c
+++ b/drivers/char/tpm/tpm2-cmd.c
@@ -737,15 +737,15 @@ int tpm2_auto_startup(struct tpm_chip *chip)
if (rc)
goto out;

+ rc = tpm2_startup(chip);
+ if (rc && rc != TPM2_RC_INITIALIZE)
+ goto out;
+
rc = tpm2_do_selftest(chip);
if (rc && rc != TPM2_RC_INITIALIZE)
goto out;

if (rc == TPM2_RC_INITIALIZE) {
- rc = tpm2_startup(chip);
- if (rc)
- goto out;
-
rc = tpm2_do_selftest(chip);
if (rc)
goto out;
--
2.43.0