On Fri, Nov 14, 2014 at 10:37:27AM +0530, Vignesh R wrote:

From: Brad Griffis <redacted>

TSC interrupt handler had udelay to avoid reporting of false pen-up
interrupt to user space. This patch implements workaround suggesting in
Advisory 1.0.31 of silicon errata for am335x, thus eliminating udelay
and touchscreen lag. This also improves performance of touchscreen and
eliminates sudden jump of cursor at touch release.

I back ported this series onto v3.15.1 in order to try this out on a
custom, beaglebone-like board. With this series, the touch is really
broken. (I had fixed the pen up problem in a totally different way for
a customer, and so I wanted to try out your solution.)

I will try to port the board code to a more recent kernel to try your
series again. With which kernel version did you test your patches?

And which board?

Thanks,
Richard