linux-kernel - Re: [tpmdd-devel] [PATCH RFC v4 4/5] tpm: split out tpm-dev.c into tpm-dev.c and tpm-common-dev.c

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Message-ID: <20170123224952.GA21744@obsidianresearch.com>
Date:   Mon, 23 Jan 2017 15:49:52 -0700
From:   Jason Gunthorpe <jgunthorpe@...idianresearch.com>
To:     James Bottomley <James.Bottomley@...senPartnership.com>
Cc:     Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>,
        open list <linux-kernel@...r.kernel.org>,
        linux-security-module@...r.kernel.org,
        tpmdd-devel@...ts.sourceforge.net
Subject: Re: [tpmdd-devel] [PATCH RFC v4 4/5] tpm: split out tpm-dev.c into
 tpm-dev.c and tpm-common-dev.c

On Mon, Jan 23, 2017 at 02:28:23PM -0800, James Bottomley wrote:
> On Mon, 2017-01-23 at 09:47 -0700, Jason Gunthorpe wrote:
> > On Mon, Jan 23, 2017 at 01:44:32AM +0200, Jarkko Sakkinen wrote:
> > > From: James Bottomley <James.Bottomley@...senPartnership.com>
> > > 
> > > Signed-off-by: James Bottomley
> > > <James.Bottomley@...senPartnership.com>
> > 
> > I really think we should not use the ugly read/write interface for 
> > any new things.
> 
> The R/W interface is needed for backward compat,

With what? This is a new cdev with different semantics.

Jason