linux-kernel - Re: [PATCH 08/17] usb: host: ehci-dbg: remove unnecessary space after cast

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Date:	Tue, 5 Jan 2016 11:41:26 -0500 (EST)
From:	Alan Stern <stern@...land.harvard.edu>
To:	Joe Perches <joe@...ches.com>
cc:	"Geyslan G. Bem" <geyslan@...il.com>,
	Sergei Shtylyov <sergei.shtylyov@...entembedded.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	LKML <linux-kernel@...r.kernel.org>, <linux-usb@...r.kernel.org>
Subject: Re: [PATCH 08/17] usb: host: ehci-dbg: remove unnecessary space
 after cast

On Mon, 4 Jan 2016, Joe Perches wrote:

> On Mon, 2016-01-04 at 19:07 -0300, Geyslan G. Bem wrote:
> > 2016-01-04 18:52 GMT-03:00 Sergei Shtylyov :
> > > > > > > This patch fixes coding style issues reported by checkpatch concerning
> > > > > > > to unnecessary space after a cast.
> > > > > > This is a case where checkpatch is wrong, IMO.  Casts should always be
> > > > > > followed by a space.  I will not accept this patch.
> 
> Your choice, but most kernel code disagrees with you.
> 
> measuring only kernel casts to a pointer, (because there are
> too many false positives otherwise) casts without a space
> are preferred ~3:1 over casts followed by a space.

Then most kernel code is implicitly in violation of CodingStyle.
I'm referring to the section that says (admittedly, in a different 
context):

			... all right-thinking people know that
	(a) K&R are _right_ and (b) K&R are right.

K&R, both the first and second editions, is very consistent about 
always putting a space after a cast.

Alan Stern

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