Patch "tpm: fix byte-order for the value read by tpm2_get_tpm_pt" has been added to the 4.7-stable tree

Patch "tpm: fix byte-order for the value read by tpm2_get_tpm_pt" has been added to the 4.7-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    tpm: fix byte-order for the value read by tpm2_get_tpm_pt

to the 4.7-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-fix-byte-order-for-the-value-read-by-tpm2_get_tpm_pt.patch
and it can be found in the queue-4.7 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From 1b0612b04090e416828c0dd5ed197b0913d834a0 Mon Sep 17 00:00:00 2001
From: "apronin@chromium.org" <apronin@chromium.org>
Date: Thu, 14 Jul 2016 18:07:18 -0700
Subject: tpm: fix byte-order for the value read by tpm2_get_tpm_pt

From: apronin@chromium.org <apronin@chromium.org>

commit 1b0612b04090e416828c0dd5ed197b0913d834a0 upstream.

The result must be converted from BE byte order, which is used by the
TPM2 protocol. This has not popped out because tpm2_get_tpm_pt() has
been only used for probing.

Fixes: 7a1d7e6dd76a ("tpm: TPM 2.0 baseline support")
Change-Id: I7d71cd379b1a3b7659d20a1b6008216762596590
Signed-off-by: Andrey Pronin <apronin@chromium.org>
Reviewed-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/char/tpm/tpm2-cmd.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/char/tpm/tpm2-cmd.c
+++ b/drivers/char/tpm/tpm2-cmd.c
@@ -703,7 +703,7 @@ ssize_t tpm2_get_tpm_pt(struct tpm_chip
 
 	rc = tpm_transmit_cmd(chip, &cmd, sizeof(cmd), desc);
 	if (!rc)
-		*value = cmd.params.get_tpm_pt_out.value;
+		*value = be32_to_cpu(cmd.params.get_tpm_pt_out.value);
 
 	return rc;
 }


Patches currently in stable-queue which might be from apronin@chromium.org are

queue-4.7/tpm-fix-byte-order-for-the-value-read-by-tpm2_get_tpm_pt.patch