From: Lars-Peter Clausen <l...@metafoo.de>
3.4.106-rc1 review patch. If anyone has any objections, please let me know.
------------------
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 <l...@metafoo.de>
Signed-off-by: Jonathan Cameron <ji...@kernel.org>
Signed-off-by: Zefan Li <lize...@huawei.com>
---
drivers/staging/iio/meter/ade7758_ring.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/staging/iio/meter/ade7758_ring.c
b/drivers/staging/iio/meter/ade7758_ring.c
index c45b23b..629a6ed 100644
--- a/drivers/staging/iio/meter/ade7758_ring.c
+++ b/drivers/staging/iio/meter/ade7758_ring.c
@@ -96,7 +96,7 @@ static int ade7758_ring_preenable(struct iio_dev *indio_dev)
size_t d_size;
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,
--
1.9.1
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