From 2482b1bba5122b1d5516c909832bdd282015b8e9 Mon Sep 17 00:00:00 2001
From: Alexander Steffen <Alexander.Steffen@infineon.com>
Date: Thu, 31 Aug 2017 19:18:56 +0200
Subject: [PATCH] tpm: Trigger only missing TPM 2.0 self tests
References: bsc#1082555
Patch-mainline: v4.15-rc1
Git-commit: 2482b1bba5122b1d5516c909832bdd282015b8e9
tpm2_do_selftest is only used during initialization of the TPM to ensure
that the device functions correctly. Therefore, it is sufficient to request
only missing self tests (parameter full_test=0), not a reexecution of all
self tests, as was done before. This allows for a faster execution of this
command.
Signed-off-by: Alexander Steffen <Alexander.Steffen@infineon.com>
Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Tested-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Acked-by: Michal Suchanek <msuchanek@suse.de>
---
drivers/char/tpm/tpm2-cmd.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/char/tpm/tpm2-cmd.c b/drivers/char/tpm/tpm2-cmd.c
index e1a41b788f08..8e940a530df8 100644
--- a/drivers/char/tpm/tpm2-cmd.c
+++ b/drivers/char/tpm/tpm2-cmd.c
@@ -865,7 +865,7 @@ static int tpm2_start_selftest(struct tpm_chip *chip, bool full)
}
/**
- * tpm2_do_selftest() - run a full self test
+ * tpm2_do_selftest() - ensure that all self tests have passed
*
* @chip: TPM chip to use
*
@@ -886,7 +886,7 @@ static int tpm2_do_selftest(struct tpm_chip *chip)
loops = jiffies_to_msecs(duration) / delay_msec;
- rc = tpm2_start_selftest(chip, true);
+ rc = tpm2_start_selftest(chip, false);
if (rc)
return rc;
--
2.13.7