linux-kernel - Re: [PATCH v6 03/12] usb: dbc: probe and setup xhci debug capability

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Message-ID: <20160203214206.GA31438@kroah.com>
Date:	Wed, 3 Feb 2016 13:42:06 -0800
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	Lu Baolu <baolu.lu@...ux.intel.com>
Cc:	linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v6 03/12] usb: dbc: probe and setup xhci debug capability

On Tue, Jan 26, 2016 at 06:27:47PM +0800, Lu Baolu wrote:
> 
> 
> On 01/26/2016 03:36 PM, Greg Kroah-Hartman wrote:
> > 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@...ux.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...
> 
> I am sorry, but driver/usb/early is an existing subdirectory.

You are correct, sorry about that, my fault.

greg k-h