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iio: potentiostat: lmp9100: fix iio_triggered_buffer_{predisable,postenable} positions

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The iio_triggered_buffer_{predisable,postenable} functions attach/detach
the poll functions.

For the predisable hook, the disable code should occur before detaching
the poll func, and for the postenable hook, the poll func should be
attached before the enable code.

The lmp9100 was attaching a poll function but never detaching it via any
IIO disable hook.

This change adds the detaching of the poll function, and moves/renames
lmp91000_buffer_preenable() function to lmp91000_buffer_postenable().
The idea is to make it more symmetrical, so that when the
iio_triggered_buffer_{predisable,postenable} functions get removed, it's
easier to see.

Fixes: 67e17300dc ("iio: potentiostat: add LMP91000 support")
Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Alexandru Ardelean 2020-03-04 11:41:05 +02:00 committed by Jonathan Cameron
parent 736e19e684
commit d7cf5f6047
1 changed files with 13 additions and 5 deletions
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18
drivers/iio/potentiostat/lmp91000.c
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@ -275,11 +275,20 @@ static int lmp91000_buffer_cb(const void *val, void *private)
static const struct iio_trigger_ops lmp91000_trigger_ops = {
};
static int lmp91000_buffer_preenable(struct iio_dev *indio_dev)
static int lmp91000_buffer_postenable(struct iio_dev *indio_dev)
{
struct lmp91000_data *data = iio_priv(indio_dev);
int err;
return iio_channel_start_all_cb(data->cb_buffer);
err = iio_triggered_buffer_postenable(indio_dev);
if (err)
return err;
err = iio_channel_start_all_cb(data->cb_buffer);
if (err)
iio_triggered_buffer_predisable(indio_dev);
return err;
}
static int lmp91000_buffer_predisable(struct iio_dev *indio_dev)
@ -288,12 +297,11 @@ static int lmp91000_buffer_predisable(struct iio_dev *indio_dev)
iio_channel_stop_all_cb(data->cb_buffer);
return 0;
return iio_triggered_buffer_predisable(indio_dev);
}
static const struct iio_buffer_setup_ops lmp91000_buffer_setup_ops = {
.preenable = lmp91000_buffer_preenable,
.postenable = iio_triggered_buffer_postenable,
.postenable = lmp91000_buffer_postenable,
.predisable = lmp91000_buffer_predisable,
};