linux-kernel - Re: [PATCH 02/10] xhci: 'noxhci_port

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Message-ID: <20140711100822.GN22956@xiaoyu.lan>
Date:	Fri, 11 Jul 2014 12:08:22 +0200
From:	Holger Hans Peter Freyther <holger@...yther.de>
To:	Dan Williams <dan.j.williams@...el.com>
Cc:	Greg KH <gregkh@...uxfoundation.org>, Takashi Iwai <tiwai@...e.de>,
	Mathias Nyman <mathias.nyman@...ux.intel.com>,
	USB list <linux-usb@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Sarah Sharp <sarah.a.sharp@...ux.intel.com>,
	Oliver Neukum <oneukum@...e.de>
Subject: Re: [PATCH 02/10] xhci: 'noxhci_port_switch' kernel parameter

On Sat, May 24, 2014 at 07:13:12AM -0700, Dan Williams wrote:

Good Afternoon,

> Let me see if I can achieve this with a debugfs interface so that
> 'noxhci_port_switch' does not become a permanent ABI per Greg's
> concern.

I wonder if there is another non-ABI option? Couldn't the ports
be unconditionall switched back to EHCI when unloading the xhci
module? I know it is just a workaround (but then again I don't
have any usb 3.0 devices). :)


cheers
	holger
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