linux-kernel - Re: [PATCH] cciss: Add cciss_allow

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Message-Id: <20091012150615.f9572d8a.akpm@linux-foundation.org>
Date:	Mon, 12 Oct 2009 15:06:15 -0700
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	"Stephen M. Cameron" <scameron@...rdog.cce.hp.com>
Cc:	axboe@...nel.dk, linux-kernel@...r.kernel.org,
	mikem@...rdog.cce.hp.com
Subject: Re: [PATCH] cciss: Add cciss_allow_hpsa module parameter.

On Mon, 12 Oct 2009 10:36:25 -0500
"Stephen M. Cameron" <scameron@...rdog.cce.hp.com> wrote:

> Add cciss_allow_hpsa module parameter.  This parameter causes
> the cciss driver to ignore any Smart Array devices known to be
> supported by the hpsa driver.

An alternative approach would be to ensure that hpsa is loaded first. 
Then when cciss tries to control a device it will fail to acquire that
devices's PCI regions and will bale out in an orderly manner.

I don't know how we can reliably arrange for hpsa to execute first, but
I'm sure someone does ;)

Unless CONFIG_CCISS=y, CONFIG_HPSA=m.  Then we're screwed.
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