Input: goodix - fix spurious key release events

The goodix panel sends spurious interrupts after a 'finger up' event, which always cause a timeout. We were exiting the interrupt handler by reporting touch_num == 0, but this was still processed as valid and caused the code to use the uninitialised point_data, creating spurious key release events.

Report an error from the interrupt handler so as to avoid processing invalid point_data further.

Signed-off-by: Dmitry Mastykin dmastykin@astralinux.ru Reviewed-by: Bastien Nocera hadess@hadess.net Link: https://lore.kernel.org/r/20200316075302.3759-2-dmastykin@astralinux.ru Signed-off-by: Dmitry Torokhov dmitry.torokhov@gmail.com