This is a note to let you know that I've just added the patch titled
tpm_tis: add delay after aborting command
to the 3.0-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
tpm_tis-add-delay-after-aborting-command.patch
and it can be found in the queue-3.0 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From a927b8131794ee449b7f6666e7ab61301949b20f Mon Sep 17 00:00:00 2001
From: Stefan Berger <[email protected]>
Date: Fri, 11 Nov 2011 12:57:06 -0500
Subject: tpm_tis: add delay after aborting command
From: Stefan Berger <[email protected]>
commit a927b8131794ee449b7f6666e7ab61301949b20f upstream.
This patch adds a delay after aborting a command. Some TPMs need
this and will not process the subsequent command correctly otherwise.
It's worth noting that a TPM randomly failing to process a command,
maps to randomly failing suspend/resume operations.
Signed-off-by: Stefan Berger <[email protected]>
Signed-off-by: Rajiv Andrade <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
drivers/char/tpm/tpm_tis.c | 3 +++
1 file changed, 3 insertions(+)
--- a/drivers/char/tpm/tpm_tis.c
+++ b/drivers/char/tpm/tpm_tis.c
@@ -354,6 +354,9 @@ static int tpm_tis_send(struct tpm_chip
return len;
out_err:
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;
}
Patches currently in stable-queue which might be from
[email protected] are
queue-3.0/tpm_tis-add-delay-after-aborting-command.patch
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