linux-kernel - Re: [RFC V4] lib: crc8: add new library module providing crc8 algorithm

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Date:	Wed, 25 May 2011 09:53:46 -0700
From:	Randy Dunlap <rdunlap@...otime.net>
To:	"Arend van Spriel" <arend@...adcom.com>
Cc:	"Andrew Morton" <akpm@...ux-foundation.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-wireless@...r.kernel.org" <linux-wireless@...r.kernel.org>,
	"John W. Linville" <linville@...driver.com>,
	"David S. Miller" <davem@...emloft.net>,
	"Dan Carpenter" <error27@...il.com>,
	"George Spelvin" <linux@...izon.com>
Subject: Re: [RFC V4] lib: crc8: add new library module providing crc8
 algorithm

On Wed, 25 May 2011 18:49:40 +0200 Arend van Spriel wrote:

> On 05/25/2011 06:43 PM, Randy Dunlap wrote:
> >
> >> diff --git a/lib/crc8.c b/lib/crc8.c
> >> new file mode 100644
> >> index 0000000..0ce4238
> >> --- /dev/null
> >> +++ b/lib/crc8.c
> >> @@ -0,0 +1,84 @@
> >> +/*
> >> + * Copyright (c) 2011 Broadcom Corporation
> >> + *
> >> + * Permission to use, copy, modify, and/or distribute this software for any
> >> + * purpose with or without fee is hereby granted, provided that the above
> >> + * copyright notice and this permission notice appear in all copies.
> >> + *
> >> + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
> >> + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
> >> + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
> >> + * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
> >> + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
> >> + * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
> >> + * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
> >> + */
> > insert blank line here, please.
> 
> Will do that.
> 
> >> +#define pr_fmt(fmt)		KBUILD_MODNAME ": " fmt
> >> +#include<linux/module.h>
> >> +#include<linux/crc8.h>
> >> +#include<linux/printk.h>
> >> +
> >> +/*
> >> + * crc8_populate_msb - fill crc table for given polynomial in reverse bit order.
> >> + *
> >> + * table:	table to be filled.
> >> + * polynomial:	polynomial for which table is to be filled.
> >> + */
> > Please convert all of these function comments to kernel-doc, like the header file has.
> 
> Can be done easily, but what would be the added value to describe a 
> function twice. I am not fully aware of the usage of kernel-doc, but if 
> it were run over the full kernel tree I would expect the same function 
> to popup twice if I the kernel-doc markup  to the source file as well.

OK, never mind, then.

Usually only one of the files is included in a docbook.tmpl file anyway
(i.e., crc8.h or crc8.c).  Only both would be included if they both contained
something (new/different) to add to the documentation.

---
~Randy
*** Remember to use Documentation/SubmitChecklist when testing your code ***
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