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Date: Sat, 24 May 2014 08:39:45 +0200
From: Holger Hans Peter Freyther <holger@freyther.de>
To: Dan Williams <dan.j.williams@intel.com>
Cc: Greg KH <gregkh@linuxfoundation.org>, Takashi Iwai <tiwai@suse.de>,
        Mathias Nyman <mathias.nyman@linux.intel.com>,
        USB list <linux-usb@vger.kernel.org>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        Sarah Sharp <sarah.a.sharp@linux.intel.com>,
        Holger Hans Peter Freyther <holger@moiji-mobile.com>,
        Oliver Neukum <oneukum@suse.de>
Subject: Re: [PATCH 02/10] xhci: 'noxhci_port_switch' kernel parameter
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On Tue, May 20, 2014 at 03:40:16PM -0700, Dan Williams wrote:

Dear Dan,

> Sorry, I don't think it is fair to users to force them to re-compile
> their kernel to get their device to work.  Granted, I'm new to USB
> development, but the rate of reports of endpoint devices that mess up
> and require quirks in the hcd-driver or usb-core seems un-ending to

thank you very much for this statement. xhci-hcd is unusable for
many people. On my laptop I can't scan more than one document, the
laptop sometimes immediately wakes up after suspend and after almost
two years all of these issues remain.

I am running kernels with a hacked up pci-quirks.c for months and
scanning documents work, suspend/resume is working, no issues with
USB serials. My job is not related to Linux kernel development so
I would love to go back to a distribution kernel. Please make this
possible. In the end "xhci" appears to be a "supported" driver?

cheers
	holger