Re: [RFC/PATCH] Revert "Input: wacom - add 0xE5 (MT device) support"

[Jonathan Nieder <jrnieder@gmail.com>]

Ping Cheng wrote:
> On Thu, Jun 14, 2012 at 5:27 PM, Jonathan Nieder <jrnieder@gmail.com> wrote:

>> It's not really about testing.  A patch adding MTSCREEN support simply
>
> Here is an update on my testing (for hardware, I have to test to be
> sure). The result shows driver in upstream and 3.2.20 both work with
> TPC2FG.

I will ask Nils to test 3.5-rc2 or newer.  For reference, he
reproduced trouble (the driver rejecting his tablet) using 3.4.2 with
the following patches on top:

  9fee619505bd Input: wacom - add basic Intuos5 support
  f860e581fd47 Input: wacom - add Intuos5 Touch Ring/ExpressKey support
  9b5b95dd516a Input: wacom - add Intuos5 Touch Ring LED support
  ae584ca47328 Input: wacom - add Intuos5 multitouch sensor support
  f393ee2b814e Input: wacom - retrieve maximum number of touch points
  1963518b9b1b Input: wacom - add 0xE5 (MT device) support
  a882c932a628 Input: wacom - return proper error if
               usb_get_extra_descriptor() fails

His machine is a Thinkpad x220t.  The built-in tablet has USB id
056a:00e6.  3.4.2 without those patches works fine.  (More details at [1].)

I prefer to start with making sure mainline works well first, and then
I'll be happy to work with you on backporting the current driver to
3.2-based kernels if you'd like.

Thanks again for your help,
Jonathan

[1] http://bugs.debian.org/677164
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