[PATCH] tpm: allow TCPA log area to be empty
From: Jarkko Sakkinen <hidden>
Date: 2018-03-10 16:16:49
Also in:
linux-security-module, lkml, stable
Subsystem:
the rest, tpm device driver · Maintainers:
Linus Torvalds, Peter Huewe, Jarkko Sakkinen
TCPA log are can be empty when the TPM is disabled. This commit changes the
behavior of tpm_read_log_acpi() to return successfully in this case.
Cc: stable@vger.kernel.org
Fixes: 55a82ab3181b ("[PATCH] tpm: add bios measurement log")
Signed-off-by: Jarkko Sakkinen <redacted>
---
drivers/char/tpm/tpm_eventlog_acpi.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/char/tpm/tpm_eventlog_acpi.c b/drivers/char/tpm/tpm_eventlog_acpi.c
index 66f19e93c216..f5f66dcd6f30 100644
--- a/drivers/char/tpm/tpm_eventlog_acpi.c
+++ b/drivers/char/tpm/tpm_eventlog_acpi.c@@ -84,8 +84,8 @@ int tpm_read_log_acpi(struct tpm_chip *chip) break; } if (!len) { - dev_warn(&chip->dev, "%s: TCPA log area empty\n", __func__); - return -EIO; + dev_info(&chip->dev, "TCPA log area is empty\n"); + return 0; } /* malloc EventLog space */
--
2.15.1