The MSB of the first byte read via I2C at the coordinates address
indicates whether the data is valid or ready (called "buffer status" in
the datasheets) when an interrupt is raised. Previously, this bit was
ignored, which resulted in a lot of incorrect detections of "finger
removed" events.
Signed-off-by: NPaul Cercueil <paul@crapouillou.net>
Acked-by: NBastien Nocera <hadess@hadess.net>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>