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-rw-r--r--include/linux/iio/iio.h4
1 files changed, 3 insertions, 1 deletions
diff --git a/include/linux/iio/iio.h b/include/linux/iio/iio.h
index 202e55b0a28b..7bfa1b9bc8a2 100644
--- a/include/linux/iio/iio.h
+++ b/include/linux/iio/iio.h
@@ -556,7 +556,9 @@ struct iio_buffer_setup_ops {
* and owner
* @buffer: [DRIVER] any buffer present
* @scan_bytes: [INTERN] num bytes captured to be fed to buffer demux
- * @available_scan_masks: [DRIVER] optional array of allowed bitmasks
+ * @available_scan_masks: [DRIVER] optional array of allowed bitmasks. Sort the
+ * array in order of preference, the most preferred
+ * masks first.
* @masklength: [INTERN] the length of the mask established from
* channels
* @active_scan_mask: [INTERN] union of all scan masks requested by buffers