linux-kernel - RE: [PATCH] new helper to define common struct resource constructs

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Message-ID: <ADE657CA350FB648AAC2C43247A983F001F383E058E9@AUSP01VMBX24.collaborationhost.net>
Date:	Wed, 13 Jul 2011 17:15:17 -0500
From:	H Hartley Sweeten <hartleys@...ionengravers.com>
To:	Arnd Bergmann <arnd@...db.de>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>
CC:	Sascha Hauer <s.hauer@...gutronix.de>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Wolfram Sang <w.sang@...gutronix.de>,
	"thierry.nolf.barco@...il.com" <thierry.nolf.barco@...il.com>,
	Huang Shijie <b32955@...escale.com>,
	"linux-mtd@...ts.infradead.org" <linux-mtd@...ts.infradead.org>,
	Uwe Kleine-König 
	<u.kleine-koenig@...gutronix.de>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Lothar Waßmann <LW@...o-electronics.de>
Subject: RE: [PATCH] new helper to define common struct resource constructs

On Wednesday, July 13, 2011 2:42 PM, Arnd Bergmann wrote:
> On Wednesday 13 July 2011 23:18:49 Andrew Morton wrote:
>>> On Monday 11 July 2011, Uwe Kleine-K__nig wrote:
>>>> resource definitions that just define start, end and flags = IORESOURCE_MEM
>>>> or IORESOURCE_IRQ (with start=end) are quite common. So introduce a shortcut
>>>> for them. Also make available a macro to specify named resources of both
>>>> types which are less common.
>>>> 
>>>> Signed-off-by: Uwe Kleine-K____nig <u.kleine-koenig@...gutronix.de>
>>> 
>>> Acked-by: Arnd Bergmann <arnd@...db.de>
>>> 
>>> What do others think, is this worthwhile?
>>> Should we also define macros for IORESOURCE_IO and IORESOURCE_DMA?
>>> 
>>
>> It would help if we could see some usage examples (ie: sample
>> conversions), to get a better idea of the value of this.
>
> Uwe posted a patch '[PATCH] ARM: mxc: use new helpers to define
> common struct resource entries' that converts one ARM platform to use
> it, with reasonable outcome:
>
> 26 files changed, 72 insertions(+), 308 deletions(-)

ep93xx doesn't have that many but converting it's core.c gives:

 1 files changed, 19 insertions(+), 93 deletions(-)

Regards,
Hartley
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