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Date:   Thu, 25 Aug 2022 10:42:08 -0700
From:   Jakub Kicinski <kuba@kernel.org>
To:     "=?UTF-8?B?aW1hZ2Vkb25n?=(=?UTF-8?B?6JGj5qKm6b6Z?=)" 
        <imagedong@tencent.com>, linux-doc@vger.kernel.org
Cc:     Stephen Rothwell <sfr@canb.auug.org.au>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        "Linux Next Mailing List" <linux-next@vger.kernel.org>,
        David Miller <davem@davemloft.net>,
        Networking <netdev@vger.kernel.org>,
        Jonathan Corbet <corbet@lwn.net>
Subject: Re: [Internet]linux-next: build warning after merge of the net-next
 tree
Message-ID: <20220825104208.592a2df2@kernel.org>
In-Reply-To: <07263247-4906-4A72-A1A2-CAB41F115EB7@tencent.com>
References: <20220825154105.534d78ab@canb.auug.org.au>
        <07263247-4906-4A72-A1A2-CAB41F115EB7@tencent.com>
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On Thu, 25 Aug 2022 07:55:36 +0000 imagedong(=E8=91=A3=E6=A2=A6=E9=BE=99) w=
rote:
> > After merging the net-next tree, today's linux-next build (htmldocs)
> > produced this warning:
> >=20
> > Documentation/networking/kapi:26: net/core/skbuff.c:780: WARNING: Error=
 in declarator or parameters
> > Invalid C declaration: Expecting "(" in parameters. [error at 19]
> >   void __fix_address kfree_skb_reason (struct sk_buff *skb, enum skb_dr=
op_reason reason)
> >   -------------------^
> >=20
> > Introduced by commit
> >=20
> >   c205cc7534a9 ("net: skb: prevent the split of kfree_skb_reason() by g=
cc")
> >  =20
>=20
> Yeah, I commited this patch. May I ask what command did you use to
> produce this warning? I tried the following command, but not success:
>=20
>   make V=3D2 SPHINXDIRS=3D"networking" htmldocs
>=20
> Hmm.......what does this warning means? Does it don't like this
> function attribute?

It popped up for me on a clean build of

	make htmldocs

There's a lot of other warnings but you should see this one, too.

I think you need to add the new keyword to one of the tables in
Documentation/conf.py