Comment /dev/ppsX open flow.

1 files changed, 6 insertions, 1 deletions

diff --git a/serial.c b/serial.c
index a85a4ffb..a81081d9 100644
--- a/serial.c
+++ b/serial.c
@@ -407,7 +407,12 @@ void gpsd_set_speed(struct gps_device_t *session,
 }
 
 int gpsd_serial_open(struct gps_device_t *session)
-/* open a device for access to its data */
+/* open a device for access to its data 
+ * return: the opened file descriptor
+ *         PLACEHOLDING_FD - for /dev/ppsX
+ *         UNALLOCATED_FD - for open failure
+ */
+
 {
     mode_t mode = (mode_t) O_RDWR;