linux-kernel - Re: [PATCH] tpm: tis_i2c: Fix sanity check interrupt enable mask

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Message-ID: <YwhGLZX2+dggWHcI@kernel.org>
Date:   Fri, 26 Aug 2022 07:03:57 +0300
From:   Jarkko Sakkinen <jarkko@...nel.org>
To:     Eddie James <eajames@...ux.ibm.com>
Cc:     linux-integrity@...r.kernel.org, linux-kernel@...r.kernel.org,
        Alexander.Steffen@...ineon.com, jgg@...pe.ca, peterhuewe@....de,
        joel@....id.au
Subject: Re: [PATCH] tpm: tis_i2c: Fix sanity check interrupt enable mask

On Wed, Aug 17, 2022 at 03:03:33PM -0500, Eddie James wrote:
> The sanity check mask for TPM_INT_ENABLE register was off by 8 bits,
> resulting in failure to probe if the TPM_INT_ENABLE register was a
> valid value.
> 
> Fixes: bbc23a07b072 ("tpm: Add tpm_tis_i2c backend for tpm_tis_core")
> Signed-off-by: Eddie James <eajames@...ux.ibm.com>
> ---
>  drivers/char/tpm/tpm_tis_i2c.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/char/tpm/tpm_tis_i2c.c b/drivers/char/tpm/tpm_tis_i2c.c
> index 0692510dfcab..635a69dfcbbd 100644
> --- a/drivers/char/tpm/tpm_tis_i2c.c
> +++ b/drivers/char/tpm/tpm_tis_i2c.c
> @@ -49,7 +49,7 @@
>  
>  /* Masks with bits that must be read zero */
>  #define TPM_ACCESS_READ_ZERO 0x48
> -#define TPM_INT_ENABLE_ZERO 0x7FFFFF6
> +#define TPM_INT_ENABLE_ZERO 0x7FFFFF60
>  #define TPM_STS_READ_ZERO 0x23
>  #define TPM_INTF_CAPABILITY_ZERO 0x0FFFF000
>  #define TPM_I2C_INTERFACE_CAPABILITY_ZERO 0x80000000
> -- 
> 2.31.1
> 

Reviewed-by: Jarkko Sakkinen <jarkko@...nel.org>

Thank you.

BR, Jarkko