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-rw-r--r--drivers/iio/industrialio-core.c25
1 files changed, 20 insertions, 5 deletions
diff --git a/drivers/iio/industrialio-core.c b/drivers/iio/industrialio-core.c
index d8051cdcbdc2..b3fcc2c449d8 100644
--- a/drivers/iio/industrialio-core.c
+++ b/drivers/iio/industrialio-core.c
@@ -406,10 +406,16 @@ EXPORT_SYMBOL_GPL(iio_enum_write);
/**
* iio_format_value() - Formats a IIO value into its string representation
- * @buf: The buffer to which the formated value gets written
- * @type: One of the IIO_VAL_... constants. This decides how the val and val2
- * parameters are formatted.
- * @vals: pointer to the values, exact meaning depends on the type parameter.
+ * @buf: The buffer to which the formatted value gets written
+ * @type: One of the IIO_VAL_... constants. This decides how the val
+ * and val2 parameters are formatted.
+ * @size: Number of IIO value entries contained in vals
+ * @vals: Pointer to the values, exact meaning depends on the
+ * type parameter.
+ *
+ * Return: 0 by default, a negative number on failure or the
+ * total number of characters written for a type that belongs
+ * to the IIO_VAL_... constant.
*/
ssize_t iio_format_value(char *buf, unsigned int type, int size, int *vals)
{
@@ -1096,6 +1102,11 @@ EXPORT_SYMBOL_GPL(devm_iio_device_free);
/**
* iio_chrdev_open() - chrdev file open for buffer access and ioctls
+ * @inode: Inode structure for identifying the device in the file system
+ * @filp: File structure for iio device used to keep and later access
+ * private data
+ *
+ * Return: 0 on success or -EBUSY if the device is already opened
**/
static int iio_chrdev_open(struct inode *inode, struct file *filp)
{
@@ -1114,7 +1125,11 @@ static int iio_chrdev_open(struct inode *inode, struct file *filp)
/**
* iio_chrdev_release() - chrdev file close buffer access and ioctls
- **/
+ * @inode: Inode structure pointer for the char device
+ * @filp: File structure pointer for the char device
+ *
+ * Return: 0 for successful release
+ */
static int iio_chrdev_release(struct inode *inode, struct file *filp)
{
struct iio_dev *indio_dev = container_of(inode->i_cdev,