[PATCH RESEND 0/4] reduce Surface Pro 3 multitouch jitter

[Joey Pabalinas]

The Surface Pro 3 firmware doesn't reliably send contact lift off
reports nor handle invalid report values gracefully.

To reduce touchscreen input jitter:
  - add MT_QUIRK_NOT_SEEN_MEANS_UP to the MT_CLS_WIN_8
  - drop invalid report values

Patches have been tested on my personal Surface Pro 3 for a
couple months without any problems, as well as being run in my
Arch Linux AUR kernel package [1] without a single complaint
so far.

[1] https://aur.archlinux.org/packages/linux-surfacepro3-git

Joey Pabalinas (4):
  HID: multitouch: add MT_QUIRK_NOT_SEEN_MEANS_UP to MT_CLS_WIN_8 quirks
  HID: multitouch: don't check HID_GROUP_MULTITOUCH_WIN_8 for serial protocol
  HID: multitouch: drop reports containing invalid values
  HID: multitouch: remove unneeded else conditional cases

 drivers/hid/hid-multitouch.c | 27 ++++++++++++++++++++-------
 1 file changed, 20 insertions(+), 7 deletions(-)

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2.18.0