[PATCH] input: touchscreen: ti_am335x_tsc: Fix HWPEN interrupt handling

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Remove write to REG_IRQCLR and REG_IRQWAKEUP in interrupt handler for
IRQENB_HW_PEN as the resume handler should and does clear REG_IRQWAKEUP.
IRQENB_HW_PEN bit is set in irqclr so that all interrupts get cleared
later so let IRQENB_HW_PEN be cleared by that.

Without this patch wakeup events from TSC_ADC do not work because pending
interrupts in TSC_ADC were causing HW_PEN interrupt, needed for wake from
suspend modes, to get disabled immediately by IRQ handler after being
enabled and preventing wake from happening.

Signed-off-by: Dave Gerlach <d-gerlach@xxxxxx>
---
 drivers/input/touchscreen/ti_am335x_tsc.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/drivers/input/touchscreen/ti_am335x_tsc.c b/drivers/input/touchscreen/ti_am335x_tsc.c
index 191a1b8..a21a07c 100644
--- a/drivers/input/touchscreen/ti_am335x_tsc.c
+++ b/drivers/input/touchscreen/ti_am335x_tsc.c
@@ -273,8 +273,6 @@ static irqreturn_t titsc_irq(int irq, void *dev)
 	status = titsc_readl(ts_dev, REG_RAWIRQSTATUS);
 	if (status & IRQENB_HW_PEN) {
 		ts_dev->pen_down = true;
-		titsc_writel(ts_dev, REG_IRQWAKEUP, 0x00);
-		titsc_writel(ts_dev, REG_IRQCLR, IRQENB_HW_PEN);
 		irqclr |= IRQENB_HW_PEN;
 	}
 
-- 
2.4.6

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