diff options
Diffstat (limited to 'drivers/iio')
| -rw-r--r-- | drivers/iio/industrialio-core.c | 25 |
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, |