linux-kernel - Re: Use of '%#02x' is almost always wrong

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Message-ID: <20211013061547.GG8429@kadam>
Date:   Wed, 13 Oct 2021 09:15:47 +0300
From:   Dan Carpenter <dan.carpenter@...cle.com>
To:     Joe Perches <joe@...ches.com>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        kernel-janitors <kernel-janitors@...r.kernel.org>
Subject: Re: Use of '%#02x' is almost always wrong

On Sun, Oct 10, 2021 at 09:45:30AM -0700, Joe Perches wrote:
> Perhaps too many developers do not know that using '%#<width>x'
> in printf output _includes_ the 0x prefix in the output width.
> 

This is a good point.  Presumably you're going to add it to checkpatch.pl?

I looked at '%#04x' and you would think those would all be printing char
types but some are printing shorts.  :/  It's harder to deal with that
because 50% are correct from the tiny sample I looked at.

regards,
dan carpenter