iio: Move attach/detach of the poll func to the core

All devices using a triggered buffer need to attach and detach the trigger
to the device in order to properly work. Instead of doing this in each and
every driver by hand move this into the core.

At this point in time, all drivers should have been resolved to
attach/detach the poll-function in the same order.

This patch removes all explicit calls of iio_triggered_buffer_postenable()
& iio_triggered_buffer_predisable() in all drivers, since the core handles
now the pollfunc attach/detach.

The more peculiar change is for the 'at91-sama5d2_adc' driver, since it's
not immediately obvious that removing the hooks doesn't break anything.
Eugen was able to test on at91-sama5d2-adc driver, sama5d2-xplained board.
All seems to be fine.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Tested-by: Eugen Hristev <eugen.hristev@microchip.com> #for at91-sama5d2-adc
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/drivers/iio/accel/bmc150-accel-core.c b/drivers/iio/accel/bmc150-accel-core.c
index 8f60d0727ee8..24864d9dfab5 100644
--- a/drivers/iio/accel/bmc150-accel-core.c
+++ b/drivers/iio/accel/bmc150-accel-core.c
@@ -1411,7 +1411,7 @@ static int bmc150_accel_buffer_postenable(struct iio_dev *indio_dev)
 	int ret = 0;
 
 	if (indio_dev->currentmode == INDIO_BUFFER_TRIGGERED)
-		return iio_triggered_buffer_postenable(indio_dev);
+		return 0;
 
 	mutex_lock(&data->mutex);
 
@@ -1443,7 +1443,7 @@ static int bmc150_accel_buffer_predisable(struct iio_dev *indio_dev)
 	struct bmc150_accel_data *data = iio_priv(indio_dev);
 
 	if (indio_dev->currentmode == INDIO_BUFFER_TRIGGERED)
-		return iio_triggered_buffer_predisable(indio_dev);
+		return 0;
 
 	mutex_lock(&data->mutex);