[PATCH 3/6] iio: trigger: Add missing fields in kernel docs

[Cristina Opriceana]

Fix kernel docs warnings by adding the missing description
for each of the existing function parameters.

Signed-off-by: Cristina Opriceana <cristina.opriceana@xxxxxxxxx>
---
 drivers/iio/industrialio-trigger.c | 27 ++++++++++++++++++++++++---
 1 file changed, 24 insertions(+), 3 deletions(-)

diff --git a/drivers/iio/industrialio-trigger.c b/drivers/iio/industrialio-trigger.c
index d31098e..cae2939 100644
--- a/drivers/iio/industrialio-trigger.c
+++ b/drivers/iio/industrialio-trigger.c
@@ -40,7 +40,14 @@ static DEFINE_MUTEX(iio_trigger_list_lock);
 
 /**
  * iio_trigger_read_name() - retrieve useful identifying name
- **/
+ * @dev:	device that holds the iio_trigger
+ * @attr:	pointer to the device_attribute structure that is
+ *		being processed
+ * @buf:	buffer to print the name into
+ *
+ * Return: a negative number on failure or the number of written
+ *	   characters on success.
+ */
 static ssize_t iio_trigger_read_name(struct device *dev,
 				     struct device_attribute *attr,
 				     char *buf)
@@ -288,10 +295,17 @@ EXPORT_SYMBOL_GPL(iio_dealloc_pollfunc);
 
 /**
  * iio_trigger_read_current() - trigger consumer sysfs query current trigger
+ * @dev:	Device this iio_dev belongs to
+ * @attr:	Pointer to the device_attribute structure that
+ *		is being processed
+ * @buf:	Buffer where the current trigger name will be printed into
  *
  * For trigger consumers the current_trigger interface allows the trigger
  * used by the device to be queried.
- **/
+ *
+ * Return: a negative number on failure, the number of characters written
+ *	   on success or 0 if no trigger is available
+ */
 static ssize_t iio_trigger_read_current(struct device *dev,
 					struct device_attribute *attr,
 					char *buf)
@@ -305,11 +319,18 @@ static ssize_t iio_trigger_read_current(struct device *dev,
 
 /**
  * iio_trigger_write_current() - trigger consumer sysfs set current trigger
+ * @dev:	Device that this iio_dev belongs to
+ * @attr:	Device attribute that is being processed
+ * @buf:	String buffer that holds the name of the trigger
+ * @len:	Length of the trigger name held by buf
  *
  * For trigger consumers the current_trigger interface allows the trigger
  * used for this device to be specified at run time based on the trigger's
  * name.
- **/
+ *
+ * Return: negative error code on failure or length of the buffer
+ *	   on success
+ */
 static ssize_t iio_trigger_write_current(struct device *dev,
 					 struct device_attribute *attr,
 					 const char *buf,
-- 
1.9.1

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