From: Robert Hancock <hancockr@shaw.ca>
To: David Brownell <david-b@pacbell.net>
Cc: benh@kernel.crashing.org, lkml <linux-kernel@vger.kernel.org>,
Thomas Gleixner <tglx@linutronix.de>, Ingo Molnar <mingo@elte.hu>,
hpa@zytor.com
Subject: Re: [patch] x86 supports NO_IRQ convention
Date: Mon, 23 Jun 2008 20:20:41 -0600 [thread overview]
Message-ID: <486059F9.6060901@shaw.ca> (raw)
In-Reply-To: <fa.EDfpY1oxab2UaliWrUY0jyr5T1k@ifi.uio.no>
David Brownell wrote:
> On Monday 23 June 2008, Benjamin Herrenschmidt wrote:
>> NO_IRQ on x86 is 0
>
> There is no such #define for it.
> And since zero is used for timer IRQs, it's not invalid.
As far as drivers are concerned it is. IRQ 0 is only used by
architecture-specific code and is not sharable, so drivers need not be
concerned about it.
next parent reply other threads:[~2008-06-24 2:23 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <fa.mcHAIQmpGZB1Vrm7ZD4/q9eo08Y@ifi.uio.no>
[not found] ` <fa.E+RvbN2EFmsI1cxQ84PIB8FbX50@ifi.uio.no>
[not found] ` <fa.EDfpY1oxab2UaliWrUY0jyr5T1k@ifi.uio.no>
2008-06-24 2:20 ` Robert Hancock [this message]
2008-06-24 6:39 ` [patch] x86 supports NO_IRQ convention David Brownell
2008-06-24 9:12 ` Alan Cox
2008-06-23 2:53 David Brownell
2008-06-23 9:08 ` Alan Cox
2008-06-23 11:29 ` David Brownell
2008-06-23 14:20 ` Alan Cox
2008-06-23 11:34 ` Johannes Stezenbach
2008-06-23 10:42 ` Benjamin Herrenschmidt
2008-06-23 11:28 ` David Brownell
2008-06-23 20:06 ` Benjamin Herrenschmidt
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