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Date:   Fri, 25 Dec 2020 09:06:51 -0800
From:   Joe Perches <>
To:     Tom Rix <>,
        Simon Horman <>
Subject: Re: [PATCH] nfp: remove h from printk format specifier

On Fri, 2020-12-25 at 06:56 -0800, Tom Rix wrote:
> On 12/24/20 2:39 PM, Joe Perches wrote:
> > Kernel code doesn't use a signed char or short with %hx or %hu very often
> > but in case you didn't already know, any signed char/short emitted with
> > anything like %hx or %hu needs to be left alone as sign extension occurs so:
> Yes, this would also effect checkpatch.

Of course but checkpatch is stupid and doesn't know types
so it just assumes that the type argument is not signed.

In general, that's a reasonable but imperfect assumption.

coccinelle could probably do this properly as it's a much
better parser.  clang-tidy should be able to as well.

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