linux-kernel - [PATCH 08/11] staging: comedi: comedidev.h: document struct comedi

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Message-Id: <1442857976-32692-9-git-send-email-abbotti@mev.co.uk>
Date:	Mon, 21 Sep 2015 18:52:53 +0100
From:	Ian Abbott <abbotti@....co.uk>
To:	<driverdev-devel@...uxdriverproject.org>
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Ian Abbott <abbotti@....co.uk>,
	H Hartley Sweeten <hsweeten@...ionengravers.com>,
	<linux-kernel@...r.kernel.org>
Subject: [PATCH 08/11] staging: comedi: comedidev.h: document struct comedi_lrange

Signed-off-by: Ian Abbott <abbotti@....co.uk>
---
 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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