1 files changed, 3 insertions, 0 deletions

diff --git a/drivers/char/tpm/tpm_tis.c b/drivers/char/tpm/tpm_tis.c
index 34832bc7464..d93bafde312 100644
--- a/drivers/char/tpm/tpm_tis.c
+++ b/drivers/char/tpm/tpm_tis.c
@@ -432,6 +432,9 @@ 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;