linux-kernel - Re: [PATCH 2/2] tpm: fix byte-order for the value read by tpm2_get_tpm

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Date:	Mon, 18 Jul 2016 22:04:21 +0300
From:	Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>
To:	Andrey Pronin <apronin@...omium.org>
Cc:	Peter Huewe <peterhuewe@....de>,
	Marcel Selhorst <tpmdd@...horst.net>,
	Jason Gunthorpe <jgunthorpe@...idianresearch.com>,
	tpmdd-devel@...ts.sourceforge.net, linux-kernel@...r.kernel.org,
	groeck@...omium.org, smbarber@...omium.org, dianders@...omium.org
Subject: Re: [PATCH 2/2] tpm: fix byte-order for the value read by
 tpm2_get_tpm_pt

On Thu, Jul 14, 2016 at 06:07:18PM -0700, Andrey Pronin wrote:
> Change-Id: I7d71cd379b1a3b7659d20a1b6008216762596590
> Signed-off-by: Andrey Pronin <apronin@...omium.org>

Please remove the internal commit ID next time. This is also lacking a
description but this time I can write it down.

This not needed for the stable for obvious reasons (only used for
probing).

Fixes: 7a1d7e6dd76a ("tpm: TPM 2.0 baseline support")
Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>

/Jarkko

> ---
>  drivers/char/tpm/tpm2-cmd.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/char/tpm/tpm2-cmd.c b/drivers/char/tpm/tpm2-cmd.c
> index a1673dc..a88b31e 100644
> --- 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 *chip, u32 property_id,  u32 *value,
>  
>  	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;
>  }
> -- 
> 2.6.6
>