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tpm_tis: add delay after aborting command

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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 <[email protected]>
This commit is contained in:
Stefan Berger 2011-11-11 12:57:06 -05:00 • committed by Rajiv Andrade
commit a927b81317
1 changed files with 3 additions and 0 deletions
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3
drivers/char/tpm/tpm_tis.c
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@ -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;