linux-kernel - Re: [PATCH] isdn: hysdn: Fix error spaces around '*'

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Message-ID: <6ff800ceda4b1c1f1d9e519aac13db42dc703294.camel@perches.com>
Date:   Sat, 03 Aug 2019 04:15:05 -0700
From:   Joe Perches <joe@...ches.com>
To:     Greg KH <gregkh@...uxfoundation.org>,
        Jose Carlos Cazarin Filho <joseespiriki@...il.com>
Cc:     isdn@...ux-pingi.de, devel@...verdev.osuosl.org,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] isdn: hysdn: Fix error spaces around '*'

On Sat, 2019-08-03 at 08:32 +0200, Greg KH wrote:
> On Fri, Aug 02, 2019 at 07:56:02PM +0000, Jose Carlos Cazarin Filho wrote:
> > Fix checkpath error:
> > CHECK: spaces preferred around that '*' (ctx:WxV)
> > +extern hysdn_card *card_root;        /* pointer to first card */
[]
> > diff --git a/drivers/staging/isdn/hysdn/hysdn_defs.h b/drivers/staging/isdn/hysdn/hysdn_defs.h
[]
> > @@ -220,7 +220,7 @@ typedef struct hycapictrl_info hycapictrl_info;
> >  /*****************/
> >  /* exported vars */
> >  /*****************/
> > -extern hysdn_card *card_root;	/* pointer to first card */
> > +extern hysdn_card * card_root;	/* pointer to first card */
> 
> The original code here is correct, checkpatch must be reporting this
> incorrectly.

Here checkpatch thinks that hydsn_card is an identifier rather
than a typedef.

It's defined as:
	typedef struct HYSDN_CARD {
	...
	} hysdn_card;

And that confuses checkpatch.

kernel source code style would not use a typedef for a struct.

A change would be to remove the typedef and declare this as:
	struct hysdn_card {
		...
	};

And then do a global:
	sed 's/\bhysdn_card\b/struct hysdn_card/g'

But that's not necessary as the driver is likely to be removed.