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Date:      Thu, 24 Sep 1998 20:00:44 +0200
From:      Eivind Eklund <eivind@yes.no>
To:        "Justin T. Gibbs" <gibbs@narnia.plutotech.com>, Adam McDougall <mcdougall@ameritech.net>
Cc:        current@FreeBSD.ORG
Subject:   Re: options DPT_LOST_IRQ
Message-ID:  <19980924200044.27705@follo.net>
In-Reply-To: <199809240354.VAA03623@narnia.plutotech.com>; from Justin T. Gibbs on Wed, Sep 23, 1998 at 09:54:40PM -0600
References:  <3609A685.A9B65B3A@ameritech.net> <199809240354.VAA03623@narnia.plutotech.com>

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On Wed, Sep 23, 1998 at 09:54:40PM -0600, Justin T. Gibbs wrote:
> In article <3609A685.A9B65B3A@ameritech.net> you wrote:
> > Does CAM still perform what is supposed to when using this kernel
> > option? Because it doesn't show any evidence of it in Boot: -v and the
> > unwanted behavior of not using this option is showing up again, even
> > though its still in my kernel.
> 
> The CAM driver does not currently honor this option.  It could easily
> be added again, but it would be nice to know why it is necessary.  Is
> the symptom simply a timeout?

This option is necessary due to interrupts being eaten by the serial
driver 'fast interrupt' code (which in some cases blocks interrupts
longer than the DPT assert them).

Eivind.

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