diff options
Diffstat (limited to 'drivers/char/tpm/tpm_tis.c')
| -rw-r--r-- | drivers/char/tpm/tpm_tis.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/drivers/char/tpm/tpm_tis.c b/drivers/char/tpm/tpm_tis.c index a1748621111..47ba9c213cc 100644 --- a/drivers/char/tpm/tpm_tis.c +++ b/drivers/char/tpm/tpm_tis.c @@ -368,6 +368,11 @@ static int probe_itpm(struct tpm_chip *chip) }; size_t len = sizeof(cmd_getticks); int rem_itpm = itpm; + u16 vendor = ioread16(chip->vendor.iobase + TPM_DID_VID(0)); + + /* probe only iTPMS */ + if (vendor != TPM_VID_INTEL) + return 0; itpm = 0; @@ -390,9 +395,6 @@ static int probe_itpm(struct tpm_chip *chip) out: itpm = rem_itpm; tpm_tis_ready(chip); - /* some TPMs need a break here otherwise they will not work - * correctly on the immediately subsequent command */ - msleep(chip->vendor.timeout_b); release_locality(chip, chip->vendor.locality, 0); return rc; |