linux-kernel - Re: Recommendation for activating a deferred module init in the kernel

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Date:	Wed, 18 Jun 2008 02:10:42 +0200
From:	Stefan Richter <stefanr@...6.in-berlin.de>
To:	Johannes Stezenbach <js@...21.net>
CC:	Tim Bird <tim.bird@...sony.com>, Josh Boyer <jwboyer@...il.com>,
	Jörn Engel <joern@...fs.org>,
	linux-embedded <linux-embedded@...r.kernel.org>,
	linux kernel <linux-kernel@...r.kernel.org>
Subject: Re: Recommendation for activating a deferred module init in the	kernel

Johannes Stezenbach wrote:
> I think the USB bus enumeration can take significant time:
> recognize a device is connected, turn on bus power, try
> to read descriptors (bus powered devices might be slow to
> respond after power up). And this will happen even with
> drivers_autoprobe == 0, right?

Probably... I don't know which particular steps happen in the USB core 
before upper layer drivers are bound.  Not binding the [eou]hci-hcd PCI 
driver would certainly be more effective.
-- 
Stefan Richter
-=====-==--- -==- =--=-
http://arcgraph.de/sr/
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