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

From: Greg Kroah-Hartman
Date: Tue Jan 26 2016 - 02:37:04 EST

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 <>
> ---
> 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...