tpm_tis: add delay after aborting command
This patch adds a delay after aborting a command. Some TPMs need
this and will not process the subsequent command correctly otherwise.
Signed-off-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
diff --git a/drivers/char/tpm/tpm_tis.c b/drivers/char/tpm/tpm_tis.c
index 34832bc7..d93bafd 100644
--- a/drivers/char/tpm/tpm_tis.c
+++ b/drivers/char/tpm/tpm_tis.c
@@ -432,6 +432,9 @@
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;