linux-kernel - Re: [PATCHv3 1/2] usb: USB Type-C connector class

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Wed, 22 Jun 2016 12:21:49 +0200
From:	Oliver Neukum <oneukum@...e.com>
To:	Heikki Krogerus <heikki.krogerus@...ux.intel.com>
Cc:	Felipe Balbi <felipe.balbi@...ux.intel.com>,
	Greg KH <gregkh@...uxfoundation.org>,
	Guenter Roeck <linux@...ck-us.net>,
	linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org
Subject: Re: [PATCHv3 1/2] usb: USB Type-C connector class

On Wed, 2016-06-22 at 13:03 +0300, Heikki Krogerus wrote:
> On Wed, Jun 22, 2016 at 12:50:16PM +0300, Heikki Krogerus wrote:
>  
> > But if the port is DRP, we will always be able to swap the data role
> > between DFP and UFP.
> 
> Just to clarify: DRP as it's defined in Type-C spec < 1.2 means the
> data role, not power role. And that is what Universal Serial Bus
> Type-CTM Port Controller specification is based on. Please correct me
> if I'm wrong.

Understood. That is exactly the problem. That spec defines two ways
to support host and client.

	Regards
		Oliver