linux-kernel - [PATCH] iio: hi8435: Drop hi8435

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Date:   Sat, 10 Aug 2019 22:45:45 -0700
From:   Andrey Smirnov <andrew.smirnov@...il.com>
To:     linux-iio@...r.kernel.org
Cc:     Andrey Smirnov <andrew.smirnov@...il.com>,
        linux-kernel@...r.kernel.org, Jonathan Cameron <jic23@...nel.org>,
        Chris Healy <cphealy@...il.com>
Subject: [PATCH] iio: hi8435: Drop hi8435_remove()

Convert the remainder of hi8435_probe() to use devres and get rid of
hi8435_remove().

Signed-off-by: Andrey Smirnov <andrew.smirnov@...il.com>
Cc: linux-kernel@...r.kernel.org
Cc: linux-iio@...r.kernel.org
Cc: Jonathan Cameron <jic23@...nel.org>
Cc: Chris Healy <cphealy@...il.com>
---
 drivers/iio/adc/hi8435.c | 30 +++++++++++++-----------------
 1 file changed, 13 insertions(+), 17 deletions(-)

diff --git a/drivers/iio/adc/hi8435.c b/drivers/iio/adc/hi8435.c
index c15f0e154e4d..fe1341383d30 100644
--- a/drivers/iio/adc/hi8435.c
+++ b/drivers/iio/adc/hi8435.c
@@ -456,6 +456,11 @@ static irqreturn_t hi8435_trigger_handler(int irq, void *private)
 	return IRQ_HANDLED;
 }
 
+static void hi8435_triggered_event_cleanup(void *data)
+{
+	iio_triggered_event_cleanup(data);
+}
+
 static int hi8435_probe(struct spi_device *spi)
 {
 	struct iio_dev *idev;
@@ -513,26 +518,18 @@ static int hi8435_probe(struct spi_device *spi)
 	if (ret)
 		return ret;
 
-	ret = iio_device_register(idev);
+	ret = devm_add_action_or_reset(&spi->dev,
+				       hi8435_triggered_event_cleanup,
+				       idev);
+	if (ret)
+		return ret;
+
+	ret = devm_iio_device_register(&spi->dev, idev);
 	if (ret < 0) {
 		dev_err(&spi->dev, "unable to register device\n");
-		goto unregister_triggered_event;
+		return ret;
 	}
 
-	return 0;
-
-unregister_triggered_event:
-	iio_triggered_event_cleanup(idev);
-	return ret;
-}
-
-static int hi8435_remove(struct spi_device *spi)
-{
-	struct iio_dev *idev = spi_get_drvdata(spi);
-
-	iio_device_unregister(idev);
-	iio_triggered_event_cleanup(idev);
-
 	return 0;
 }
 
@@ -554,7 +551,6 @@ static struct spi_driver hi8435_driver = {
 		.of_match_table	= of_match_ptr(hi8435_dt_ids),
 	},
 	.probe		= hi8435_probe,
-	.remove		= hi8435_remove,
 	.id_table	= hi8435_id,
 };
 module_spi_driver(hi8435_driver);
-- 
2.21.0