linux-kernel - Re: [PATCH] usb: move usb_calc_bus

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Date:	Fri, 19 Feb 2016 16:52:24 -0500 (EST)
From:	Alan Stern <stern@...land.harvard.edu>
To:	Arnd Bergmann <arnd@...db.de>
cc:	Felipe Balbi <balbi@...nel.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	<linux-arm-kernel@...ts.infradead.org>,
	Douglas Anderson <dianders@...omium.org>,
	Heiko Stuebner <heiko@...ech.de>,
	Stefan Wahren <stefan.wahren@...e.com>,
	Felipe Balbi <balbi@...com>,
	Heikki Krogerus <heikki.krogerus@...ux.intel.com>,
	Mathias Nyman <mathias.nyman@...ux.intel.com>,
	<linux-usb@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] usb: move usb_calc_bus_time into common code

On Fri, 19 Feb 2016, Arnd Bergmann wrote:

> The dwc2 dual-role USB controller driver has started calling
> usb_calc_bus_time, and does so regardless of whether it is
> being built as a host controller or gadget. In case all

Out of curiosity...  Why does dwc2 need to calculate bus times when it
is in device mode?

Alan Stern