linux-kernel - Re: [patch] drivers: wait for threaded probes between initcall levels

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Date:	Mon, 30 Oct 2006 10:48:51 +0000
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	Cornelia Huck <cornelia.huck@...ibm.com>
Cc:	Andrew Morton <akpm@...l.org>, Pavel Machek <pavel@....cz>,
	Greg KH <greg@...ah.com>,
	Stephen Hemminger <shemminger@...l.org>,
	Matthew Wilcox <matthew@....cx>, Adrian Bunk <bunk@...sta.de>,
	Linus Torvalds <torvalds@...l.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	linux-pci@...ey.karlin.mff.cuni.cz
Subject: Re: [patch] drivers: wait for threaded probes between initcall
	levels

Ar Llu, 2006-10-30 am 10:44 +0100, ysgrifennodd Cornelia Huck:
> Would it be sufficient just to make the busses wait until all their
> devices are through with their setup? This is what the ccw bus on s390
> does:

For ATA and IDE no, it might work with SCSI but your devices would
randomly re-order which is also obnoxious. IDE relies on both link probe
order and also has code that knows boot time processing is single
threaded. 

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