[PATCH 08/11] staging: comedi: comedidev.h: document struct comedi_lrange

[Ian Abbott]

Signed-off-by: Ian Abbott <abbotti@xxxxxxxxx>
---
 drivers/staging/comedi/comedidev.h | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/drivers/staging/comedi/comedidev.h b/drivers/staging/comedi/comedidev.h
index cfb7d52..195fa57 100644
--- a/drivers/staging/comedi/comedidev.h
+++ b/drivers/staging/comedi/comedidev.h
@@ -606,6 +606,17 @@ extern const struct comedi_lrange range_unknown;
 #define GCC_ZERO_LENGTH_ARRAY 0
 #endif
 
+/**
+ * struct comedi_lrange - Describes a COMEDI range table
+ * @length: Number of entries in the range table.
+ * @range: Array of &struct comedi_krange, one for each range.
+ *
+ * Each element of @range[] describes the minimum and maximum physical range
+ * range and the type of units.  Typically, the type of unit is %UNIT_volt
+ * (i.e. volts) and the minimum and maximum are in millionths of a volt.
+ * There may also be a flag that indicates the minimum and maximum are merely
+ * scale factors for an unknown, external reference.
+ */
 struct comedi_lrange {
 	int length;
 	struct comedi_krange range[GCC_ZERO_LENGTH_ARRAY];
-- 
2.5.1

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