linux-kernel - RE: [PATCH v2 3/8] tpm: factor out tpm1_get

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Date:   Thu, 15 Mar 2018 23:24:23 +0000
From:   "Winkler, Tomas" <tomas.winkler@...el.com>
To:     Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>,
        Jason Gunthorpe <jgg@...pe.ca>
CC:     "Usyskin, Alexander" <alexander.usyskin@...el.com>,
        "linux-integrity@...r.kernel.org" <linux-integrity@...r.kernel.org>,
        "linux-security-module@...r.kernel.org" 
        <linux-security-module@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH v2 3/8] tpm: factor out tpm1_get_random into tpm1-cmd.c

> 
> On Sat, 2018-03-10 at 10:24 +0200, Tomas Winkler wrote:
> > +		rlength = be32_to_cpu(tpm_cmd.header.out.length);
> > +		if (rlength < offsetof(struct tpm_getrandom_out, rng_data) +
> > +			      recd) {
> > +			total = -EFAULT;
> > +			break;
> > +		}
> > +		memcpy(dest, tpm_cmd.params.getrandom_out.rng_data,
> recd);
> 
> This rlength stuff can be handled with tpm_buf_length() as I do in my
> pendig-for-review patch set:
> 
> https://patchwork.kernel.org/patch/10259331/

Right, as I wrote before not sure it's good to move and change the code more than necessary at the same time. 
I would leave the tpm_buf_ changes after this series. 

Thanks
Tomas