On Fri, 05 Jul 2019, Kai-Heng Feng wrote: > Goodix touchpad may drop its first couple input events when > i2c-designware-platdrv and intel-lpss it connects to took too long to > runtime resume from runtime suspended state. > > This issue happens becuase the touchpad has a rather small buffer to > store up to 13 input events, so if the host doesn't read those events in > time (i.e. runtime resume takes too long), events are dropped from the > touchpad's buffer. > > The bottleneck is D3cold delay it waits when transitioning from D3cold > to D0, hence remove the delay to make the resume faster. I've tested > some systems with intel-lpss and haven't seen any regression. > > Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=202683 > Signed-off-by: Kai-Heng Feng <[email protected]> > --- > drivers/mfd/intel-lpss-pci.c | 2 ++ > 1 file changed, 2 insertions(+)
Applied, thanks. -- Lee Jones [李琼斯] Linaro Services Technical Lead Linaro.org │ Open source software for ARM SoCs Follow Linaro: Facebook | Twitter | Blog
