linux-kernel - Re: [PATCH] USB: Driver for Freescale QUICC Engine USB Host Controller

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Message-ID: <Pine.LNX.4.44L0.0812232140400.8076-100000@netrider.rowland.org>
Date:	Tue, 23 Dec 2008 21:45:09 -0500 (EST)
From:	Alan Stern <stern@...land.harvard.edu>
To:	Anton Vorontsov <avorontsov@...mvista.com>
cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Greg Kroah-Hartman <greg@...ah.com>,
	David Brownell <dbrownell@...rs.sourceforge.net>,
	Timur Tabi <timur@...escale.com>,
	Li Yang <leoli@...escale.com>, <linux-usb@...r.kernel.org>,
	<linuxppc-dev@...abs.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] USB: Driver for Freescale QUICC Engine USB Host Controller

On Wed, 24 Dec 2008, Anton Vorontsov wrote:

> This patch adds support for the FHCI USB controller, as found
> in the Freescale MPC836x and MPC832x processors. It can support
> Full or Low speed modes.
> 
> Quite a lot the hardware is doing by itself (SOF generation, CRC
> generation and checking), though scheduling and retransmission is on
> software's shoulders.
> 
> This controller does not integrate the root hub, so this driver also
> fakes one-port hub. External hub is required to support more than
> one device.

It looks like the kernel this was written for is several versions out 
of date.  The driver is missing some critical calls to functions like 
usb_hcd_link_urb_to_ep().

Alan Stern

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