linux-kernel - [PATCH v3 2/3] Staging: iio: adt7316: Move interrupt related code

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Message-Id: <20181208151638.8759-3-shreeya.patel23498@gmail.com>
Date:   Sat,  8 Dec 2018 20:46:37 +0530
From:   Shreeya Patel <shreeya.patel23498@...il.com>
To:     lars@...afoo.de, Michael.Hennerich@...log.com, jic23@...nel.org,
        knaack.h@....de, pmeerw@...erw.net, gregkh@...uxfoundation.org,
        linux-iio@...r.kernel.org, devel@...verdev.osuosl.org,
        linux-kernel@...r.kernel.org, shreeya.patel23498@...il.com
Subject: [PATCH v3 2/3] Staging: iio: adt7316: Move interrupt related code

There is a function adt7316_irq_setup() where irq_type is being
set. It would be good to move devm_request_threaded_irq() function
and assignment of chip->config1 in adt7316_irq_setup() to unclutter
the code in probe function.

Signed-off-by: Shreeya Patel <shreeya.patel23498@...il.com>
---
 drivers/staging/iio/addac/adt7316.c | 34 ++++++++++++++---------------
 1 file changed, 17 insertions(+), 17 deletions(-)

diff --git a/drivers/staging/iio/addac/adt7316.c b/drivers/staging/iio/addac/adt7316.c
index 86b2c3d53588..97dd48153293 100644
--- a/drivers/staging/iio/addac/adt7316.c
+++ b/drivers/staging/iio/addac/adt7316.c
@@ -1807,11 +1807,12 @@ static irqreturn_t adt7316_event_handler(int irq, void *private)
 	return IRQ_HANDLED;
 }
 
-static int adt7316_setup_irq(struct device *dev, int irq)
+static int adt7316_setup_irq(struct iio_dev *indio_dev)
 {
-	int irq_type;
+	struct adt7316_chip_info *chip = iio_priv(indio_dev);
+	int irq_type, ret;
 
-	irq_type = irqd_get_trigger_type(irq_get_irq_data(irq));
+	irq_type = irqd_get_trigger_type(irq_get_irq_data(chip->bus.irq));
 
 	switch (irq_type) {
 	case IRQF_TRIGGER_HIGH:
@@ -1821,13 +1822,23 @@ static int adt7316_setup_irq(struct device *dev, int irq)
 	case IRQF_TRIGGER_FALLING:
 		break;
 	default:
-		dev_info(dev, "mode %d unsupported, using IRQF_TRIGGER_LOW\n",
+		dev_info(&indio_dev->dev, "mode %d unsupported, using IRQF_TRIGGER_LOW\n",
 			 irq_type);
 		irq_type = IRQF_TRIGGER_LOW;
 		break;
 	}
 
-	return irq_type;
+	ret = devm_request_threaded_irq(&indio_dev->dev, chip->bus.irq,
+					NULL, adt7316_event_handler,
+					irq_type | IRQF_ONESHOT,
+					indio_dev->name, indio_dev);
+	if (ret)
+		return ret;
+
+	if (irq_type & IRQF_TRIGGER_HIGH)
+		chip->config1 |= ADT7316_INT_POLARITY;
+
+	return ret;
 }
 
 /*
@@ -2124,7 +2135,6 @@ int adt7316_probe(struct device *dev, struct adt7316_bus *bus,
 {
 	struct adt7316_chip_info *chip;
 	struct iio_dev *indio_dev;
-	int irq_type;
 	int ret = 0;
 
 	indio_dev = devm_iio_device_alloc(dev, sizeof(*chip));
@@ -2168,19 +2178,9 @@ int adt7316_probe(struct device *dev, struct adt7316_bus *bus,
 	indio_dev->modes = INDIO_DIRECT_MODE;
 
 	if (chip->bus.irq > 0) {
-		irq_type = adt7316_setup_irq(dev, chip->bus.irq);
-
-		ret = devm_request_threaded_irq(dev, chip->bus.irq,
-						NULL,
-						adt7316_event_handler,
-						irq_type | IRQF_ONESHOT,
-						indio_dev->name,
-						indio_dev);
+		ret = adt7316_setup_irq(indio_dev);
 		if (ret)
 			return ret;
-
-		if (irq_type & IRQF_TRIGGER_HIGH)
-			chip->config1 |= ADT7316_INT_POLARITY;
 	}
 
 	ret = chip->bus.write(chip->bus.client, ADT7316_CONFIG1, chip->config1);
-- 
2.17.1