linux-kernel - Re: [PATCH net-next] net: dsa: dont use generic selftest strings for custom selftests

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Message-ID: <20231214145620.lfsft2c3x5fjz6ev@skbuf>
Date:   Thu, 14 Dec 2023 16:56:20 +0200
From:   Vladimir Oltean <olteanv@...il.com>
To:     Ante Knezic <ante.knezic@...mholz.de>
Cc:     andrew@...n.ch, davem@...emloft.net, edumazet@...gle.com,
        f.fainelli@...il.com, kuba@...nel.org,
        linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
        pabeni@...hat.com
Subject: Re: [PATCH net-next] net: dsa: dont use generic selftest strings for
 custom selftests

On Thu, Dec 14, 2023 at 03:47:51PM +0100, Ante Knezic wrote:
> Indeed I do have a custom implementation for the mv88e6xxx chip, but its not
> come to state to be posted because of test/chip specifics.
> 
> > I didn't notice when the selftest support was added that there is no
> > implementation in DSA drivers of custom ds->ops->self_test(). Adding
> > interfaces with no users is frowned upon, precisely because it doesn't
> > show the big picture.
> 
> I was not aware of this, I apologize. If this is the case, perhaps this patch
> should wait for the first custom self test implementation and be reposted as
> a part of bigger series.
> 
> Thanks,
> Ante
> 

I agree this should be resubmitted with a user of the API. Looking
forward to seeing it. Thanks for the understanding.

The only thing I would want to comment on the patch as it is is to avoid
the pattern of:

	if (a)
		return x;
	else
		return y;

and formulate it as:

	if (a)
		return x;

	return y;

instead. The "else" is redundant for an "if" that ends with a return statement.

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