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From: Wang Jian <lark@linux.net.cn>
To: Tejun Heo <tj@kernel.org>
Cc: avorontsov@ru.mvista.com, Matt Sealey <matt@genesi-usa.com>,
	Jeff Garzik <jgarzik@pobox.com>,
	linuxppc-dev@ozlabs.org, linux-kernel@vger.kernel.org,
	linux-ide@vger.kernel.org, Li Yang <leoli@freescale.com>
Subject: Re: [PATCH] pata_of_platform: fix no irq handling
Date: Tue, 07 Oct 2008 17:18:38 +0800	[thread overview]
Message-ID: <48EB296E.5050808@linux.net.cn> (raw)
In-Reply-To: <48EABBD3.1010401@kernel.org>

Tejun Heo wrote:
> Anton Vorontsov wrote:
>> On Mon, Oct 06, 2008 at 03:41:19PM -0500, Matt Sealey wrote:
>>> There is a simple problem with the patch which is that an "IRQ 0" can and does
>>> actually exist on a bunch of platforms, at least to the best of my knowledge.
>>>
>>> Checking for -1 (which means for definite, no irq at all, because it is
>>> totally unambiguous, as a -1 IRQ numbering is "impossible") is more correct.
>> This was discussed years ago.
>>
>> http://lkml.org/lkml/2005/11/22/159
>> http://lkml.org/lkml/2005/11/22/227
>>
> 
> Would this break any existing platforms?  If so, can those be fixed
> together or does it become a much bigger problem that way?
> 

Pata_of_platform stacks upon pata_platform. This patch fixes problem
concerning definition of "no irq" without touch any other place.  So
far I can't see any new problem.

  reply	other threads:[~2008-10-07  9:43 UTC|newest]

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-10-06 17:26 Anton Vorontsov
2008-10-06 20:41 ` Matt Sealey
2008-10-06 21:32   ` Anton Vorontsov
2008-10-07  1:30     ` Tejun Heo
2008-10-07  9:18       ` Wang Jian [this message]
2008-10-07  9:26       ` Anton Vorontsov
2008-10-07 10:04         ` Benjamin Herrenschmidt
2008-10-07  9:37       ` Alan Cox
2008-10-08  8:40         ` David Woodhouse
2008-10-08  9:00           ` Alan Cox
2008-10-08  9:59             ` Geert Uytterhoeven
2008-10-08 10:27               ` Alan Cox
2008-10-10 17:55               ` Paul Mundt
2008-10-13  6:56 ` Tejun Heo
2008-10-13 13:27   ` Jeff Garzik
2008-10-13 13:53     ` Tejun Heo
2008-10-13 14:02     ` I have returned! Alan Cox
2008-10-16  9:40       ` Jeff Garzik
2008-10-13 14:04     ` [PATCH] fusion: remove dead mpt lan code Alan Cox
2008-10-13 14:05     ` [PATCH] mptsas: remove pointless null check Alan Cox
2008-10-13 14:22       ` James Bottomley
2008-10-13 14:37         ` Alan Cox
2008-10-13 23:27   ` [PATCH] pata_of_platform: fix no irq handling Benjamin Herrenschmidt

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