Re: [linux-safety] [PATCH] usb: host: ehci-sched: add comment about find_tt() not returning error

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On Tue, 13 Oct 2020, Sudip Mukherjee wrote:

> Hi Lukas,
> 
> On Tue, Oct 13, 2020 at 6:37 AM Lukas Bulwahn <lukas.bulwahn@xxxxxxxxx> wrote:
> >
> >
> >
> > On Tue, 13 Oct 2020, Greg Kroah-Hartman wrote:
> >
> > > On Mon, Oct 12, 2020 at 08:25:30PM +0200, Lukas Bulwahn wrote:
> > > >
> > > >
> > > > On Mon, 12 Oct 2020, Greg Kroah-Hartman wrote:
> > > >
> > > > > On Mon, Oct 12, 2020 at 05:10:21PM +0200, Lukas Bulwahn wrote:
> > > > > > And for the static analysis finding, we need to find a way to ignore this
> > > > > > finding without simply ignoring all findings or new findings that just
> > > > > > look very similar to the original finding, but which are valid.
> > > > >
> <snip>
> > >
> > > Why not fix the things that it finds that are actually issues?  If there
> > > are no actual issues found, then perhaps you should use a better tool?  :)
> > >
> >
> > Completely agree. That is why I was against adding comments here and
> > elsewhere just to have the "good feeling of doing something" after the
> > tool reported a warning and we spend some time understanding the code to
> > conclude that we now understand the code better than the tool.
> 
> I think you are missing the point here. I sent the comment not because
> of any tool, I sent it because the code there was not that simple like
> other drivers and at a first glance its not apparent why there are no
> error checks. And, afaik, the only purpose of comments is to make the
> source code easier to understand.
>

That is fine. I think it is good to add comments to make the code more 
understandable.

Lukas



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