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staging:iio:ade7758: Fix check if channels are enabled in prenable

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commit 79fa64eb2e upstream.

We should check if a channel is enabled, not if no channels are enabled.

Fixes: 550268ca11 ("staging:iio: scrap scan_count and ensure all drivers use active_scan_mask")
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Lars-Peter Clausen 2014-11-04 18:03:15 +01:00 committed by Greg Kroah-Hartman
parent 035bc79c51
commit 4fdbedf556
1 changed files with 1 additions and 1 deletions
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2
drivers/staging/iio/meter/ade7758_ring.c
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@ -92,7 +92,7 @@ static int ade7758_ring_preenable(struct iio_dev *indio_dev)
unsigned channel;
int ret;
if (!bitmap_empty(indio_dev->active_scan_mask, indio_dev->masklength))
if (bitmap_empty(indio_dev->active_scan_mask, indio_dev->masklength))
return -EINVAL;
ret = iio_sw_buffer_preenable(indio_dev);