** Changed in: linux (Ubuntu Xenial)
       Status: New => Fix Committed

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  The Precision Touchpad(PTP) button sends incorrect event code

Status in HWE Next:
Status in linux package in Ubuntu:
  In Progress
Status in linux source package in Xenial:
  Fix Committed

Bug description:
  The touchpad right button should send 273(BTN_RIGHT),
  and the left button should send 272(BTN_LEFT)
  But the touchpad right button sends 274(BTN_MIDDLE),
  and the left button sends 273 (BTN_RIGHT)

  The fix is pretty simple to just decrease the event code by 1.

  [Test Case]
  Verified on the machine has this issue, and confirm this patch works.

  [Regression Potential]
  The patch has strict if statement, so it won't affect other touchpad devices.
  And no more rework on this code snip after this commit.

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