From: Joe Perches <joe@perches.com>
To: Tom Rix <trix@redhat.com>, Simon Horman <simon.horman@netronome.com>
Cc: kuba@kernel.org, davem@davemloft.net, ast@kernel.org,
daniel@iogearbox.net, andrii@kernel.org, kafai@fb.com,
songliubraving@fb.com, yhs@fb.com, john.fastabend@gmail.com,
kpsingh@kernel.org, gustavoars@kernel.org,
louis.peens@netronome.com, netdev@vger.kernel.org,
bpf@vger.kernel.org, oss-drivers@netronome.com,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] nfp: remove h from printk format specifier
Date: Fri, 25 Dec 2020 09:06:51 -0800 [thread overview]
Message-ID: <327d6cad23720c8fe984aa75a046ff69499568c8.camel@perches.com> (raw)
In-Reply-To: <7b5517e6-41a9-cc7f-f42f-8ef449f3898e@redhat.com>
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.
next prev parent reply other threads:[~2020-12-25 17:07 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-12-23 20:20 [PATCH] nfp: remove h from printk format specifier trix
2020-12-24 20:21 ` Simon Horman
2020-12-24 22:14 ` Tom Rix
2020-12-24 22:39 ` Joe Perches
2020-12-25 14:56 ` Tom Rix
2020-12-25 17:06 ` Joe Perches [this message]
2020-12-25 22:13 ` Tom Rix
2020-12-25 23:00 ` Joe Perches
2020-12-26 20:40 ` David Laight
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