For systems in which the touch IRQ is acting as wakeup source, the interrupt controller might not latch the GPIO IRQ during sleep. In such cases, the interrupt will never occur again after resume, hence the touch screen appears dead. To fix this, call into eeti_ts_read() once to read the hardware status and to arm the IRQ again. Signed-off-by: Daniel Mack <daniel@xxxxxxxxxx> Reported-by: Sven Neumann <Sven.Neumann@xxxxxxxxx> --- drivers/input/touchscreen/eeti_ts.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/input/touchscreen/eeti_ts.c b/drivers/input/touchscreen/eeti_ts.c index f5724aaa815b..674386f910ba 100644 --- a/drivers/input/touchscreen/eeti_ts.c +++ b/drivers/input/touchscreen/eeti_ts.c @@ -117,6 +117,7 @@ static void eeti_ts_start(struct eeti_ts *eeti) eeti->running = true; wmb(); enable_irq(eeti->client->irq); + eeti_ts_read(eeti); } static void eeti_ts_stop(struct eeti_ts *eeti) -- 2.20.1
