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| author | Stefan Berger <stefanb@linux.vnet.ibm.com> | 2011-11-11 12:57:06 -0500 |
|---|---|---|
| committer | Rajiv Andrade <srajiv@linux.vnet.ibm.com> | 2011-11-16 09:43:03 -0200 |
| commit | a927b8131794ee449b7f6666e7ab61301949b20f (patch) | |
| tree | 05f341ab38243087faff74d0e56ecc6e880bd490 | |
| parent | 7f326ed7ff221a109bf89288bf6c8f0142e3e75c (diff) | |
| download | linux-3.10-a927b8131794ee449b7f6666e7ab61301949b20f.tar.gz linux-3.10-a927b8131794ee449b7f6666e7ab61301949b20f.tar.bz2 linux-3.10-a927b8131794ee449b7f6666e7ab61301949b20f.zip | |
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>
| -rw-r--r-- | drivers/char/tpm/tpm_tis.c | 3 |
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; |