linux-kernel - Re: [PATCH] usb: merge the two dummy

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Message-ID: <Pine.LNX.4.44L0.1104141141480.2487-100000@iolanthe.rowland.org>
Date:	Thu, 14 Apr 2011 11:45:34 -0400 (EDT)
From:	Alan Stern <stern@...land.harvard.edu>
To:	Sebastian Andrzej Siewior <bigeasy@...utronix.de>
cc:	Felipe Balbi <balbi@...com>,
	Tanya Brokhman <tlinder@...eaurora.org>, <gregkh@...e.de>,
	<linux-arm-msm@...r.kernel.org>, <ablay@...eaurora.org>,
	"'open list:USB GADGET/PERIPH...'" <linux-usb@...r.kernel.org>,
	'open list' <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] usb: merge the two dummy_hcds into one

On Thu, 14 Apr 2011, Sebastian Andrzej Siewior wrote:

> This patch merges the two HCDs so there is one for both.

It is too premature for this.

In fact, the support for USB-3 HCDs is currently in flux.  Sarah Sharp 
has submitted a whole bunch of patches to allow for the creation of 
primary and secondary HCDs, representing the USB-2 and USB-3 root hubs 
of an xHCI controller.  dummy-hcd should use the same mechanism.

This will means creating only one host-side platform device, and then 
creating two usb_hcd structures below it.  Tanya's design should be 
based on Sarah's work.

Alan Stern

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