linux-kernel - Re: [PATCHv4 1/2] usb: USB Type-C connector class

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Message-ID: <577AA09E.3030909@roeck-us.net>
Date:	Mon, 4 Jul 2016 10:45:02 -0700
From:	Guenter Roeck <linux@...ck-us.net>
To:	Heikki Krogerus <heikki.krogerus@...ux.intel.com>
Cc:	Greg KH <gregkh@...uxfoundation.org>,
	Oliver Neukum <oneukum@...e.com>,
	Felipe Balbi <felipe.balbi@...ux.intel.com>,
	Roger Quadros <rogerq@...com>,
	Rajaram R <rajaram.officemail@...il.com>,
	linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org
Subject: Re: [PATCHv4 1/2] usb: USB Type-C connector class

On 07/04/2016 10:11 AM, Heikki Krogerus wrote:
[ ... ]

>>> We should not forget also that the userspace can never rely on those
>>> details because of the fact that they simply will not always be
>>> available.
>>>
>> On the other side, not being able to rely on a well defined ABI makes the
>> ABI much less useful.
>
> What do we do about this?
>
I'll have to think about it. Unfortunately, I'll have to put this on the
back-burner for the time being. My primary problem is that I need
a functional  driver _now_ (ie by the end of this week), to meet an
upcoming deadline. Due to to the locking problem, I can not rely on the
typec infrastructure ... meaning I have to take two steps back and get
my code working with the Android infrastructure (which, coincidentally,
does not require locking and thus doesn't have all the resulting
limitations and complexities).

Guenter