path: root/drivers/char/tpm/tpm-chip.c
diff options
authorJason Gunthorpe <jgunthorpe@obsidianresearch.com>2016-11-19 11:18:28 -0700
committerJarkko Sakkinen <jarkko.sakkinen@linux.intel.com>2016-11-28 01:31:32 +0200
commit0cf577a03f21a988f6dbe8133d07410967b8489a (patch)
treeb2fe2571cea1f5b9049478303b59a79b8ac0c14f /drivers/char/tpm/tpm-chip.c
parent005451d44ad46623aac8349df15d7c0d1d8914c1 (diff)
tpm: Fix handling of missing event log
The event log is an optional firmware feature, if the firmware does not support it then the securityfs files should not be created and no other notification given. - Uniformly return -ENODEV from the tpm_bios_log_setup cone if no event log is detected. - Check in ACPI if this node was discovered via ACPI. - Improve the check in OF to make sure there is a parent and to fail detection if the two log properties are not declared - Pass through all other error codes instead of filtering just some Signed-off-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.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>
Diffstat (limited to 'drivers/char/tpm/tpm-chip.c')
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/char/tpm/tpm-chip.c b/drivers/char/tpm/tpm-chip.c
index 3f27753d96aa..7a4869151d3b 100644
--- a/drivers/char/tpm/tpm-chip.c
+++ b/drivers/char/tpm/tpm-chip.c
@@ -346,7 +346,7 @@ int tpm_chip_register(struct tpm_chip *chip)
rc = tpm_bios_log_setup(chip);
- if (rc == -ENODEV)
+ if (rc != 0 && rc != -ENODEV)
return rc;

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