From f60b12b02ec8d9057863423c6d7b27169638e1d9 Mon Sep 17 00:00:00 2001
From: Denis CIOCCA <denis.ciocca@st.com>
Date: Wed, 18 Sep 2013 10:00:00 +0100
Subject: iio:magn: Register buffer also without specific trigger

This patch fix buffer registration that allows to use generic IIO trigger.

Signed-off-by: Denis Ciocca <denis.ciocca@st.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

diff --git a/drivers/iio/magnetometer/st_magn_core.c b/drivers/iio/magnetometer/st_magn_core.c
index 729c71a..82461ef 100644
--- a/drivers/iio/magnetometer/st_magn_core.c
+++ b/drivers/iio/magnetometer/st_magn_core.c
@@ -373,10 +373,11 @@ int st_magn_common_probe(struct iio_dev *indio_dev,
 	if (err < 0)
 		return err;
 
+	err = st_magn_allocate_ring(indio_dev);
+	if (err < 0)
+		return err;
+
 	if (irq > 0) {
-		err = st_magn_allocate_ring(indio_dev);
-		if (err < 0)
-			return err;
 		err = st_sensors_allocate_trigger(indio_dev, NULL);
 		if (err < 0)
 			goto st_magn_probe_trigger_error;
@@ -392,8 +393,7 @@ st_magn_device_register_error:
 	if (irq > 0)
 		st_sensors_deallocate_trigger(indio_dev);
 st_magn_probe_trigger_error:
-	if (irq > 0)
-		st_magn_deallocate_ring(indio_dev);
+	st_magn_deallocate_ring(indio_dev);
 
 	return err;
 }
@@ -404,10 +404,10 @@ void st_magn_common_remove(struct iio_dev *indio_dev)
 	struct st_sensor_data *mdata = iio_priv(indio_dev);
 
 	iio_device_unregister(indio_dev);
-	if (mdata->get_irq_data_ready(indio_dev) > 0) {
+	if (mdata->get_irq_data_ready(indio_dev) > 0)
 		st_sensors_deallocate_trigger(indio_dev);
-		st_magn_deallocate_ring(indio_dev);
-	}
+
+	st_magn_deallocate_ring(indio_dev);
 }
 EXPORT_SYMBOL(st_magn_common_remove);
 
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