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Subject[PATCH] tpm: allow TCPA log area to be empty
Date
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 <jarkko.sakkinen@linux.intel.com>
---
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
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