linux-kernel - Re: [PATCH v3] tpm: Apply a sane minimum adapterlimit value for retransmission.

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Message-ID: <20170328162044.GA29742@lunn.ch>
Date:   Tue, 28 Mar 2017 18:20:44 +0200
From:   Andrew Lunn <andrew@...n.ch>
To:     Enric Balletbo i Serra <enric.balletbo@...labora.com>
Cc:     Peter Huewe <peterhuewe@....de>, tpmdd-devel@...ts.sourceforge.net,
        linux-kernel@...r.kernel.org, wsa@...-dreams.de,
        Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>,
        Bryan Freed <bfreed@...omium.org>
Subject: Re: [PATCH v3] tpm: Apply a sane minimum adapterlimit value for
 retransmission.

On Tue, Mar 28, 2017 at 05:29:38PM +0200, Enric Balletbo i Serra wrote:
> From: Bryan Freed <bfreed@...omium.org>
> 
> When the I2C Infineon part is attached to an I2C adapter that imposes
> a size limitation, large requests will fail with -EOPNOTSUPP. Retry
> them with a sane minimum size without re-issuing the 0x05 command
> as this appears to occasionally put the TPM in a bad state.
> 
> Signed-off-by: Bryan Freed <bfreed@...omium.org>
> [rework the patch to adapt to the feedback received]
> Signed-off-by: Enric Balletbo i Serra <enric.balletbo@...labora.com>

This looks O.K. now. Thanks for remembering the adaptor limit.

Acked-by: Andrew Lunn <andrew@...n.ch>

    Andrew