diff options
Diffstat (limited to 'drivers/char/tpm/tpm.c')
| -rw-r--r-- | drivers/char/tpm/tpm.c | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/drivers/char/tpm/tpm.c b/drivers/char/tpm/tpm.c index efd24bbb5cb1..67335af0ec2a 100644 --- a/drivers/char/tpm/tpm.c +++ b/drivers/char/tpm/tpm.c @@ -438,7 +438,6 @@ out: } #define TPM_DIGEST_SIZE 20 -#define TPM_ERROR_SIZE 10 #define TPM_RET_CODE_IDX 6 enum tpm_capabilities { @@ -467,12 +466,14 @@ static ssize_t transmit_cmd(struct tpm_chip *chip, struct tpm_cmd_t *cmd, len = tpm_transmit(chip,(u8 *) cmd, len); if (len < 0) return len; - if (len == TPM_ERROR_SIZE) { - err = be32_to_cpu(cmd->header.out.return_code); - dev_dbg(chip->dev, "A TPM error (%d) occurred %s\n", err, desc); - return err; - } - return 0; + else if (len < TPM_HEADER_SIZE) + return -EFAULT; + + err = be32_to_cpu(cmd->header.out.return_code); + if (err != 0) + dev_err(chip->dev, "A TPM error (%d) occurred %s\n", err, desc); + + return err; } #define TPM_INTERNAL_RESULT_SIZE 200 |