linux-kernel - Re: [PATCH] tpm: Add sysfs interface to show TPM family version

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Message-ID: <20170313183546.fvsyaq2l52hd3coq@intel.com>
Date:   Mon, 13 Mar 2017 20:35:46 +0200
From:   Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>
To:     Jason Gunthorpe <jgunthorpe@...idianresearch.com>
Cc:     "Li, Meng" <Meng.Li@...driver.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "peterhuewe@....de" <peterhuewe@....de>,
        "tpmdd@...horst.net" <tpmdd@...horst.net>,
        "tpmdd-devel@...ts.sourceforge.net" 
        <tpmdd-devel@...ts.sourceforge.net>
Subject: Re: [PATCH] tpm: Add sysfs interface to show TPM family version

On Mon, Mar 13, 2017 at 10:55:47AM -0600, Jason Gunthorpe wrote:
> On Mon, Mar 13, 2017 at 04:59:58PM +0200, Jarkko Sakkinen wrote:
> > if (chip->flags & TPM_CHIP_FLAG_TPM2)
> > 	ret = sprintf(buf, "TPM 2.0");
> > else
> > 	ret = sprintf(buf, "TPM 1.x");
> 
> And 1.x should be 1.2 or 1.1
> 
> Jason

Or maybe just create a patch that adds "family_major", which prints
1 or 2.

That is sufficient to pick the right daemon in the user space for
example.

/Jarkko