These changes are the raw update to linux-4.4.6-rt14. Kernel sources

[kvmfornfv.git] / kernel / drivers / iio / industrialio-event.c

diff --git a/kernel/drivers/iio/industrialio-event.c b/kernel/drivers/iio/industrialio-event.c
index 69b8c33..cae332b 100644 (file)
--- a/kernel/drivers/iio/industrialio-event.c
+++ b/kernel/drivers/iio/industrialio-event.c
@@ -32,6 +32,7 @@
  * @dev_attr_list:     list of event interface sysfs attribute
  * @flags:             file operations related flags including busy flag.
  * @group:             event interface sysfs attribute group
+ * @read_lock:         lock to protect kfifo read operations
  */
 struct iio_event_interface {
        wait_queue_head_t       wait;
@@ -75,6 +76,11 @@ EXPORT_SYMBOL(iio_push_event);
 
 /**
  * iio_event_poll() - poll the event queue to find out if it has data
+ * @filep:     File structure pointer to identify the device
+ * @wait:      Poll table pointer to add the wait queue on
+ *
+ * Return: (POLLIN | POLLRDNORM) if data is available for reading
+ *        or a negative error code on failure
  */
 static unsigned int iio_event_poll(struct file *filep,
                             struct poll_table_struct *wait)
@@ -211,6 +217,8 @@ static const char * const iio_ev_info_text[] = {
        [IIO_EV_INFO_VALUE] = "value",
        [IIO_EV_INFO_HYSTERESIS] = "hysteresis",
        [IIO_EV_INFO_PERIOD] = "period",
+       [IIO_EV_INFO_HIGH_PASS_FILTER_3DB] = "high_pass_filter_3db",
+       [IIO_EV_INFO_LOW_PASS_FILTER_3DB] = "low_pass_filter_3db",
 };
 
 static enum iio_event_direction iio_ev_attr_dir(struct iio_dev_attr *attr)