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-rw-r--r--drivers/iio/industrialio-buffer.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/iio/industrialio-buffer.c b/drivers/iio/industrialio-buffer.c
index ac185b8694bd..2f35db93cdb6 100644
--- a/drivers/iio/industrialio-buffer.c
+++ b/drivers/iio/industrialio-buffer.c
@@ -553,6 +553,10 @@ int iio_sw_buffer_preenable(struct iio_dev *indio_dev)
buffer->scan_mask);
else
indio_dev->active_scan_mask = buffer->scan_mask;
+
+ if (indio_dev->active_scan_mask == NULL)
+ return -EINVAL;
+
iio_update_demux(indio_dev);
if (indio_dev->info->update_scan_mode)