Date: Mon, 24 Nov 2008 18:54:53 +0000
From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: Mel Gorman <mel@csn.ul.ie>
Cc: petkovbb@gmail.com, sshtylyov@ru.mvista.com, linux-kernel@vger.kernel.org
Subject: Re: Is the change to IDE probing really necessary?
Message-ID: <20081124185453.57ca7dcc@lxorguk.ukuu.org.uk>
In-Reply-To: <20081124184321.GA8293@csn.ul.ie>
References: <20081124155632.GE23190@csn.ul.ie>
	<20081124184321.GA8293@csn.ul.ie>
Organization: Red Hat UK Cyf., Amberley Place, 107-111 Peascod Street,
 Windsor, Berkshire, SL4 1TE, Y Deyrnas Gyfunol. Cofrestrwyd yng Nghymru a
 Lloegr o'r rhif cofrestru 3798903
Mime-Version: 1.0
Content-Type: text/plain; charset=US-ASCII
Content-Transfer-Encoding: 7bit
Sender: linux-kernel-owner@vger.kernel.org
Content-Length: 1133
Lines: 32

O> On a machine requiring probing of the legacy ports, the suggested
> probe_mask of 0x3f results in other devices being registered as IDE
> devices. Suggest to the user they use 0x3 which is the old value of
> probe_mask prior to commit 20df429dd6671804999493baf2952f82582869fa.

NAK

This makes no sense.

0x3F means probe them all.

0x03 means only peer at primary/secondary.

If you don't want them probed, don't pass arguments asking for them to be
probed!

"how is a distro install using modules meant to be fixed up?"

If the distribution supports non PCI bus boxes then pass a mask of 0x3F
on non PCI boxes. If the distribution is for PCI systems then leave the
mask alone.

If you want it to just work automatically use pata_legacy instead as that
automatically flips between probing ISA tertiary devices and leaving
things well alone according to the presence of PCI bus.

Alan
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/