iio: iio_buffer_register: Use correct channel when calculating masklength

The channel set assigned to the iio device is not necessarily the same has the
channel set passed to iio_buffer_register. So to avoid possible complications
always work with the channel set pass to iio_buffer_register and ignore the
channel set assigned to the iio device.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/iio/industrialio-buffer.c b/drivers/iio/industrialio-buffer.c
index 3d8d187eef2a..096a6bfe0cdf 100644
--- a/drivers/iio/industrialio-buffer.c
+++ b/drivers/iio/industrialio-buffer.c
@@ -292,7 +292,7 @@ int iio_buffer_register(struct iio_dev *indio_dev,
                         if (channels[i].scan_index >
                             (int)indio_dev->masklength - 1)
                                 indio_dev->masklength
-                                        = indio_dev->channels[i].scan_index + 1;
+                                        = channels[i].scan_index + 1;
 
                         ret = iio_buffer_add_channel_sysfs(indio_dev,
                                                          &channels[i]);