linux-kernel - [PATCH 10/15] iio: ti_am335x_adc: Also clear threshold event when clearing overrun event

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Message-Id: <1374186086-5015-11-git-send-email-zubair.lutfullah@gmail.com>
Date:	Thu, 18 Jul 2013 23:21:21 +0100
From:	Zubair Lutfullah <zubair.lutfullah@...il.com>
To:	jic23@....ac.uk
Cc:	gregkh@...uxfoundation.org, linux-iio@...r.kernel.org,
	linux-kernel@...r.kernel.org, koen@...inion.thruhere.net
Subject: [PATCH 10/15] iio: ti_am335x_adc: Also clear threshold event when clearing overrun event

From: Russ Dill <Russ.Dill@...com>

When an overrun occurs, the FIFO is cleared. If a FIFO threshold event
was pending, the data is now gone. Clear the threshold event when
handling an overrun (or underflow).

Signed-off-by: Russ Dill <Russ.Dill@...com>
Signed-off-by: Zubair Lutfullah <zubair.lutfullah@...il.com>
---
 drivers/iio/adc/ti_am335x_adc.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/iio/adc/ti_am335x_adc.c b/drivers/iio/adc/ti_am335x_adc.c
index 8dc070d..6957011 100644
--- a/drivers/iio/adc/ti_am335x_adc.c
+++ b/drivers/iio/adc/ti_am335x_adc.c
@@ -171,8 +171,8 @@ static irqreturn_t tiadc_irq(int irq, void *private)
 		config = tiadc_readl(adc_dev, REG_CTRL);
 		config &= ~(CNTRLREG_TSCSSENB);
 		tiadc_writel(adc_dev, REG_CTRL, config);
-		tiadc_writel(adc_dev, REG_IRQSTATUS,
-				IRQENB_FIFO1OVRRUN | IRQENB_FIFO1UNDRFLW);
+		tiadc_writel(adc_dev, REG_IRQSTATUS, IRQENB_FIFO1THRES
+				| IRQENB_FIFO1OVRRUN | IRQENB_FIFO1UNDRFLW);
 		tiadc_writel(adc_dev, REG_CTRL,
 				(config | CNTRLREG_TSCSSENB));
 		return IRQ_HANDLED;
-- 
1.7.9.5

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