linux-kernel - Re: [PATCH 8/9] define global BIT macro

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Message-Id: <20070818094602.0ea69c27.randy.dunlap@oracle.com>
Date:	Sat, 18 Aug 2007 09:46:02 -0700
From:	Randy Dunlap <randy.dunlap@...cle.com>
To:	Jiri Slaby <jirislaby@...il.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	<linux-kernel@...r.kernel.org>, <source@...sta.com>,
	<dougthompson@...ssion.com>,
	<bluesmoke-devel@...ts.sourceforge.net>, <dtor@...l.ru>,
	<linux-input@...ey.karlin.mff.cuni.cz>, <netdev@...r.kernel.org>,
	<James.Bottomley@...elEye.com>, <linux-scsi@...r.kernel.org>,
	<gtolstolytkin@...mvista.com>, <vitalywool@...il.com>,
	<dsaxena@...xity.net>, <ralf@...ux-mips.org>,
	<linux-mips@...ux-mips.org>, <mchehab@...radead.org>,
	<video4linux-list@...hat.com>, <jbenc@...e.cz>,
	<flamingice@...rmilk.net>, <linux-wireless@...r.kernel.org>
Subject: Re: [PATCH 8/9] define global BIT macro

On Sat, 18 Aug 2007 11:44:12 +0200 (CEST) Jiri Slaby wrote:

> define global BIT macro
> 
> move all local BIT defines to the new globally define macro.
> 
> Signed-off-by: Jiri Slaby <jirislaby@...il.com>
> 
> ---
> 
>  include/linux/bitops.h                      |    1 +
>  include/video/sstfb.h                       |    1 -
>  include/video/tdfx.h                        |    2 --
>  net/mac80211/ieee80211_i.h                  |    2 --
>  18 files changed, 1 insertions(+), 37 deletions(-)
> 
> diff --git a/include/linux/bitops.h b/include/linux/bitops.h
> index 3255b06..a57b81f 100644
> --- a/include/linux/bitops.h
> +++ b/include/linux/bitops.h
> @@ -3,6 +3,7 @@
>  #include <asm/types.h>
>  
>  #ifdef	__KERNEL__
> +#define BIT(nr)			(1UL << (nr))
>  #define BIT_MASK(nr)		(1UL << ((nr) % BITS_PER_LONG))
>  #define BIT_WORD(nr)		((nr) / BITS_PER_LONG)
>  #define BITS_TO_TYPE(nr, t)	(((nr)+(t)-1)/(t))


So users of the BIT() macro in include/linux/input.h can be
changed to use the global BIT_MASK() macro...
and the former can be removed.

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