tpm: adjust return value of tpm_read_log

Signed-off-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>

1 files changed, 4 insertions, 2 deletions

diff --git a/drivers/char/tpm/tpm_eventlog.c b/drivers/char/tpm/tpm_eventlog.c
index c73f88cdeadf..11bb1138a828 100644
--- a/drivers/char/tpm/tpm_eventlog.c
+++ b/drivers/char/tpm/tpm_eventlog.c
@@ -381,7 +381,8 @@ static int tpm_read_log(struct tpm_chip *chip)
  * If an event log is found then the securityfs files are setup to
  * export it to userspace, otherwise nothing is done.
  *
- * Returns -ENODEV if the firmware has no event log.
+ * Returns -ENODEV if the firmware has no event log or securityfs is not
+ * supported.
  */
 int tpm_bios_log_setup(struct tpm_chip *chip)
 {
@@ -432,9 +433,10 @@ int tpm_bios_log_setup(struct tpm_chip *chip)
         return 0;
 
 err:
+        rc = PTR_ERR(chip->bios_dir[cnt]);
         chip->bios_dir[cnt] = NULL;
         tpm_bios_log_teardown(chip);
-        return -EIO;
+        return rc;
 }
 
 void tpm_bios_log_teardown(struct tpm_chip *chip)