Date: Fri, 05 Jun 1998 17:24:33 -0400 (EDT) From: Simon Shapiro <shimon@simon-shapiro.org> To: Stefan Esser <se@FreeBSD.ORG> Cc: Greg Lehey <grog@lemis.com>, Mike Smith <mike@smith.net.au>, Karl Pielorz <kpielorz@tdx.co.uk>, tcobb <tcobb@staff.circle.net>, "freebsd-current@freebsd.org" <freebsd-current@FreeBSD.ORG>, Michael Hancock <michaelh@cet.co.jp>, Bob Willcox <bob@luke.pmr.com> Subject: Re: DPT driver fails and panics with Degraded Array Message-ID: <XFMail.980605172433.shimon@simon-shapiro.org> In-Reply-To: <19980605000101.27550@mi.uni-koeln.de>
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On 04-Jun-98 Stefan Esser wrote:
...
>> DPT_INTR_DELAY: Will cause the interrupt service routine to spin a
>> little
>> bit, giving the hardware chance to settle a bit before dpt_intr gets all
>> excited about it.
>
> Is this really necessary with certain revisions of the DPT
> firmware ? Reading a device register should delay just for
> the minimum time required. Did you try that ?
No, it is not necessary. Yes, this is how the DPT driver works.
Simon
---
Sincerely Yours,
Simon Shapiro Shimon@Simon-Shapiro.ORG
770.265.7340
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