linux-kernel - Re: [RFC PATCHv2] usb: USB Type-C Connector Class

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Message-ID: <1464848668.8527.2.camel@suse.com>
Date:	Thu, 02 Jun 2016 08:24:28 +0200
From:	Oliver Neukum <oneukum@...e.com>
To:	Guenter Roeck <linux@...ck-us.net>
Cc:	Heikki Krogerus <heikki.krogerus@...ux.intel.com>,
	Andy Shevchenko <andy.shevchenko@...il.com>,
	Rajaram R <rajaram.officemail@...il.com>,
	Felipe Balbi <felipe.balbi@...ux.intel.com>,
	Mathias Nyman <mathias.nyman@...ux.intel.com>,
	Greg KH <gregkh@...uxfoundation.org>,
	linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org
Subject: Re: [RFC PATCHv2] usb: USB Type-C Connector Class

On Wed, 2016-06-01 at 06:34 -0700, Guenter Roeck wrote:
> The class code would not explicitly learn about the reset,
> but it would be informed about the exited modes.

That has drawbacks

- it doesn't tell you what caused the mode to be left (if you
  UFP, it may be the regular command)
- it is a race against your own command
- it does not work if you are in basic USB mode

	Regards
		Oliver