linux-kernel - Re [patch 2/3] fastboot: turn the USB hostcontroller initcalls into async initcalls

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Message-ID: <Pine.LNX.4.44L0.0807191116370.3491-100000@netrider.rowland.org>
Date:	Sat, 19 Jul 2008 11:25:29 -0400 (EDT)
From:	Alan Stern <stern@...land.harvard.edu>
To:	Arjan van de Ven <arjan@...radead.org>
cc:	Kernel development list <linux-kernel@...r.kernel.org>,
	USB list <linux-usb@...r.kernel.org>
Subject: Re  [patch 2/3] fastboot: turn the USB hostcontroller initcalls into
 async initcalls

On 18 July, 2008, Arjan van de Ven wrote:

> From: Arjan van de Ven <arjan@...ux.intel.com>
> Subject: [PATCH] fastboot: turn the USB hostcontroller initcalls into 
> async initcalls
> 
> the USB host controller init calls take a long time, mostly due to a
> "minimally 100 msec" delay *per port* during initialization.
> These are prime candidates for going in parallel to everything else.
> 
> The USB device ordering is not affected by this due to the
> serialized-within-eachother property of async initcalls.

Is there some reason this patch wasn't posted to the linux-usb mailing
list as well as to LKML?

Where is this "minimally 100 msec" per-port delay you refer to?  
Offhand I can't recall any such delays in the init routines.

Alan Stern

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