| From | Greg Kroah-Hartman <> | Subject | [PATCH 3.14 130/203] staging:iio:ade7758: Fix check if channels are enabled in prenable | Date | Wed, 12 Nov 2014 10:16:40 +0900 |
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3.14-stable review patch. If anyone has any objections, please let me know.
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From: Lars-Peter Clausen <lars@metafoo.de>
commit 79fa64eb2ee8ccb4bcad7f54caa2699730b10b22 upstream.
We should check if a channel is enabled, not if no channels are enabled.
Fixes: 550268ca1111 ("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>
--- drivers/staging/iio/meter/ade7758_ring.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/staging/iio/meter/ade7758_ring.c +++ b/drivers/staging/iio/meter/ade7758_ring.c @@ -87,7 +87,7 @@ static int ade7758_ring_preenable(struct { unsigned channel; - if (!bitmap_empty(indio_dev->active_scan_mask, indio_dev->masklength)) + if (bitmap_empty(indio_dev->active_scan_mask, indio_dev->masklength)) return -EINVAL; channel = find_first_bit(indio_dev->active_scan_mask,
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