Inter-revision diff: patch 8

Comparing v2 (message) to v4 (message) 

--- v2
+++ v4
@@ -1,6 +1,15 @@
-From: Daniel Kurtz <djkurtz@chromium.org>
+"4-finger scroll" is a gesture supported by some applications and
+operating systems.
+
+"Resting thumb" is when a clickpad user rests a finger (e.g., a
+thumb), in a "click zone" (typically the bottom of the touchpad) in
+anticipation of click+move=select gestures.
+
+Thus, "4-finger scroll + resting thumb" is a 5-finger gesture.
+To allow userspace to detect this gesture, we send BTN_TOOL_QUINTTAP.
 
 Signed-off-by: Daniel Kurtz <djkurtz@chromium.org>
+Acked-by: Chase Douglas <chase.douglas@canonical.com>
 ---
  drivers/input/input-mt.c |    1 +
  include/linux/input.h    |    1 +
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