linux-kernel - RE: [PATCH 3/4] char/tpm: Improve a size determination in nine functions

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Date:   Thu, 19 Oct 2017 16:58:23 +0000
From:   <Alexander.Steffen@...ineon.com>
To:     <jarkko.sakkinen@...ux.intel.com>
CC:     <andriy.shevchenko@...ux.intel.com>,
        <elfring@...rs.sourceforge.net>, <linux-integrity@...r.kernel.org>,
        <linuxppc-dev@...ts.ozlabs.org>, <benh@...nel.crashing.org>,
        <clabbe.montjoie@...il.com>, <jgunthorpe@...idianresearch.com>,
        <jsnitsel@...hat.com>, <kgold@...ux.vnet.ibm.com>,
        <mpe@...erman.id.au>, <nayna@...ux.vnet.ibm.com>,
        <paulus@...ba.org>, <PeterHuewe@....de>,
        <stefanb@...ux.vnet.ibm.com>, <linux-kernel@...r.kernel.org>,
        <kernel-janitors@...r.kernel.org>
Subject: RE: [PATCH 3/4] char/tpm: Improve a size determination in nine
 functions

> On Tue, Oct 17, 2017 at 11:50:05AM +0000, Alexander.Steffen@...ineon.com
> wrote:
> > > > Replace the specification of data structures by pointer dereferences
> > > > as the parameter for the operator "sizeof" to make the corresponding
> > > > size
> > > > determination a bit safer according to the Linux coding style
> > > > convention.
> > >
> > >
> > > This patch does one style in favor of the other.
> >
> > I actually prefer that style, so I'd welcome this change :)
> >
> > > At the end it's Jarkko's call, though I would NAK this as I think some
> > > one already told this to you for some other similar patch(es).
> > >
> > >
> > > I even would suggest to stop doing this noisy stuff, which keeps people
> > > busy for nothing.
> >
> > Cleaning up old code is also worth something, even if does not change
> > one bit in the assembly output in the end...
> >
> > Alexander
> 
> Quite insignificant clean up it is that does more harm that gives any
> benefit as any new change adds debt to backporting.
> 
> Anyway, this has been a useful patch set for me in the sense that I have
> clearer picture now on discarding/accepting commits.

Indeed. I have now a better understanding for why some code looks as ugly as it does.

> One line minor
> clean up will be from now on automatic NAK unless it causes a compiler
> warning or some other visible side-effect.

Not a nice policy, but at least a policy. I have deleted the tasks that I had still planned for other cleanup activities.

Alexander