From owner-freebsd-hackers@FreeBSD.ORG  Wed Oct 20 00:39:00 2010
Return-Path: <owner-freebsd-hackers@FreeBSD.ORG>
Delivered-To: freebsd-hackers@FreeBSD.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id 49654106566B;
	Wed, 20 Oct 2010 00:39:00 +0000 (UTC) (envelope-from imp@bsdimp.com)
Received: from harmony.bsdimp.com (bsdimp.com [199.45.160.85])
	by mx1.freebsd.org (Postfix) with ESMTP id 0A3D08FC12;
	Wed, 20 Oct 2010 00:38:59 +0000 (UTC)
Received: from localhost (localhost [127.0.0.1])
	by harmony.bsdimp.com (8.14.3/8.14.1) with ESMTP id o9K0YxV2017829;
	Tue, 19 Oct 2010 18:34:59 -0600 (MDT) (envelope-from imp@bsdimp.com)
Date: Tue, 19 Oct 2010 18:34:59 -0600 (MDT)
Message-Id: <20101019.183459.74735773.imp@bsdimp.com>
To: arundel@FreeBSD.org
From: Warner Losh <imp@bsdimp.com>
In-Reply-To: <20101019143110.GA5802@freebsd.org>
References: <20101019103432.GA69208@freebsd.org> <4CBDA371.4080801@feral.com>
	<20101019143110.GA5802@freebsd.org>
X-Mailer: Mew version 3.3 on Emacs 21.3 / Mule 5.0 (SAKAKI)
Mime-Version: 1.0
Content-Type: Text/Plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
Cc: freebsd-hackers@FreeBSD.org, mj@feral.com
Subject: Re: SCSI_DELAY cleanup
X-BeenThere: freebsd-hackers@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: Technical Discussions relating to FreeBSD
	<freebsd-hackers.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-hackers>, 
	<mailto:freebsd-hackers-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-hackers>
List-Post: <mailto:freebsd-hackers@freebsd.org>
List-Help: <mailto:freebsd-hackers-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-hackers>,
	<mailto:freebsd-hackers-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Wed, 20 Oct 2010 00:39:00 -0000

> also at some locations in the code SCSI_DELAY is being set to 15000. i believe
> this is the case when certain drivers (cam, ahb, aha) get loaded as a kernel
> module, but i'm not sure. it looks like this:
> 
> .if !defined(KERNBUILDDIR)
> opt_scsi.h:
> 	echo "#define SCSI_DELAY 15000" > ${.TARGET}
> .endif

These likely are hold-overs from ancient days where the default was
15s...  I'd be surprised if aha still even worked, but I have no way
to test it easily these days: I have the cards but no active systems
with ISA slots.  ahb never was my baby, but my only EISA system has
been off for at least 4 years now, and likely won't be turned back on
ever...

But regardless, neither of these controllers references SCSI_DELAY.

Cam likely can remove it safely as well, but I'd be more leery of
doing it there since I'm chicken :)

Warner