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Message-ID: <4D309981.5030107@garzik.org>
Date: Fri, 14 Jan 2011 13:44:17 -0500
From: Jeff Garzik <jeff@garzik.org>
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To: Thomas Gleixner <tglx@linutronix.de>
CC: David Miller <davem@davemloft.net>, linux-ide@vger.kernel.org,
        linux-kernel@vger.kernel.org, marvin@mydatex.cz
Subject: Re: IRQ enable/disable BUG in IDE w/shared IRQs
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On 01/14/2011 05:30 AM, Thomas Gleixner wrote:
> On Thu, 13 Jan 2011, David Miller wrote:
>> I have a hard time believing we've gotten away with this for so long.
>> Maybe it really is that rare to share the IDE interrupts with other
>> stuff?
>
> IIRC, the legacy IDE interrupts were 14/15 and those were never shared.

Yes, non-shared 14/15 were the 95% common case for the longest time. 
Sharing IDE interrupts within old-IDE worked FSVO "working", but the 
interrupt probes were written for a non-shared interrupt, then hacking 
into working for shared interrupts when PCI first starting showing up on 
the scene.

	Jeff