This is a note to let you know that I've just added the patch titled
tpm/tpm_i2c_stm_st33: Fix potential bug in tpm_stm_i2c_send
to the 3.14-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-tpm_i2c_stm_st33-fix-potential-bug-in-tpm_stm_i2c_send.patch
and it can be found in the queue-3.14 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 1ba3b0b6f218072afe8372d12f1b6bf26a26008e Mon Sep 17 00:00:00 2001
From: Christophe Ricard <christophe.ricard@xxxxxxxxx>
Date: Mon, 1 Dec 2014 19:32:46 +0100
Subject: tpm/tpm_i2c_stm_st33: Fix potential bug in tpm_stm_i2c_send
From: Christophe Ricard <christophe.ricard@xxxxxxxxx>
commit 1ba3b0b6f218072afe8372d12f1b6bf26a26008e upstream.
When sending data in tpm_stm_i2c_send, each loop iteration send buf.
Send buf + i instead as the goal of this for loop is to send a number
of byte from buf that fit in burstcnt. Once those byte are sent, we are
supposed to send the next ones.
The driver was working because the burstcount value returns always the maximum size for a TPM
command or response. (0x800 for a command and 0x400 for a response).
Reviewed-by: Jason Gunthorpe <jgunthorpe@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Christophe Ricard <christophe-h.ricard@xxxxxx>
Signed-off-by: Peter Huewe <peterhuewe@xxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/char/tpm/tpm_i2c_stm_st33.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/char/tpm/tpm_i2c_stm_st33.c
+++ b/drivers/char/tpm/tpm_i2c_stm_st33.c
@@ -488,7 +488,7 @@ static int tpm_stm_i2c_send(struct tpm_c
if (burstcnt < 0)
return burstcnt;
size = min_t(int, len - i - 1, burstcnt);
- ret = I2C_WRITE_DATA(client, TPM_DATA_FIFO, buf, size);
+ ret = I2C_WRITE_DATA(client, TPM_DATA_FIFO, buf + i, size);
if (ret < 0)
goto out_err;
Patches currently in stable-queue which might be from christophe.ricard@xxxxxxxxx are
queue-3.14/tpm-tpm_i2c_stm_st33-fix-potential-bug-in-tpm_stm_i2c_send.patch
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