linux-kernel - Re: [PATCH v1 1/3] media: staging: tegra-vde: Support reference picture marking

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Date:   Thu, 18 Nov 2021 09:53:15 +0300
From:   Dan Carpenter <dan.carpenter@...cle.com>
To:     Joe Perches <joe@...ches.com>
Cc:     Dmitry Osipenko <digetx@...il.com>,
        Thierry Reding <thierry.reding@...il.com>,
        Jonathan Hunter <jonathanh@...dia.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Anton Bambura <jenneron@...tonmail.com>,
        Hans Verkuil <hverkuil@...all.nl>, linux-media@...r.kernel.org,
        linux-staging@...ts.linux.dev, linux-clk@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v1 1/3] media: staging: tegra-vde: Support reference
 picture marking

On Wed, Nov 17, 2021 at 10:21:00PM -0800, Joe Perches wrote:
> On Thu, 2021-11-18 at 09:14 +0300, Dan Carpenter wrote:
> > It's not hard to run Smatch yourself...
> > 
> > Depending on if you're on a apt distro or yum distro then fetch the
> > dependencies with one of the follow commands:
> > apt-get install gcc make sqlite3 libsqlite3-dev libdbd-sqlite3-perl libssl-dev libtry-tiny-perl
> > yum install gcc make sqlite3 sqlite-devel sqlite perl-DBD-SQLite openssl-devel perl-Try-Tiny
> > 
> > git clone https://github.com/error27/smatch
> > cd smatch
> > make
> > cd ~/kernel_source/
> > ~/smatch/smatch_scripts/kchecker drivers/subsystem/
> 
> Might want to stick something in Documentation about that.
> 

That's a good idea.  I was trying to figure out where it should go and
I looked at Documentation/process/submit-checklist.rst and point 4 had
me a bit puzzled:

4) ppc64 is a good architecture for cross-compilation checking because it
   tends to use ``unsigned long`` for 64-bit quantities.

It took me a while to realize that this must have been written when 64
bit systems were new and rare.  :P  This documentation is old old old...

regards,
dan carpenter