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Date: Mon, 25 Jan 2016 23:36:53 -0800
From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: Lu Baolu <baolu.lu@linux.intel.com>
Cc: linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v6 03/12] usb: dbc: probe and setup xhci debug capability
Message-ID: <20160126073653.GB24272@kroah.com>
References: <1453781665-4714-1-git-send-email-baolu.lu@linux.intel.com>
 <1453781665-4714-4-git-send-email-baolu.lu@linux.intel.com>
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On Tue, Jan 26, 2016 at 12:14:16PM +0800, Lu Baolu wrote:
> xHCI debug capability (DbC) is an optional functionality provided
> by an xHCI host controller. Software learns this capability by
> walking through the extended capability list in mmio of the host.
> 
> This patch introduces the code to probe and initialize the debug
> capability hardware during early boot. With hardware initialization
> done, the debug target (system under debug which has DbC enabled)
> will present a debug device through the debug port. The debug device
> is fully compliant with the USB framework and provides the equivalent
> of a very high performance (USB3) full-duplex serial link between the
> debug host and target.
> 
> Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
> ---
>  MAINTAINERS                  |   7 +
>  arch/x86/Kconfig.debug       |  12 +
>  drivers/usb/early/Makefile   |   1 +

Why did you make a whole new subdirectory, just for your one driver?
Please don't do that, just put it in the host controller directory where
it belongs...