1 files changed, 12 insertions, 20 deletions
diff --git a/drivers/staging/pi433/rf69_enum.h b/drivers/staging/pi433/rf69_enum.h
index fbf56fcf5fe8..9dc906124e98 100644
--- a/drivers/staging/pi433/rf69_enum.h
+++ b/drivers/staging/pi433/rf69_enum.h
@@ -84,38 +84,30 @@ enum threshold_decrement {
 	dec_16times
 };
 
-enum flag {
-	mode_switch_completed,
-	ready_to_receive,
-	ready_to_send,
-	pll_locked,
-	rssi_exceeded_threshold,
-	timeout,
-	automode,
-	sync_address_match,
-	fifo_full,
-//	fifo_not_empty, collision with next enum; replaced by following enum...
-	fifo_empty,
-	fifo_level_below_threshold,
-	fifo_overrun,
-	packet_sent,
-	payload_ready,
-	crc_ok,
-	battery_low
-};
-
 enum fifo_fill_condition {
 	after_sync_interrupt,
 	always
 };
 
 enum packet_format {
+	/*
+	 * Used when the size of payload is fixed in advance. This mode of
+	 * operation may be of interest to minimize RF overhead by 1 byte as
+	 * no length byte field is required
+	 */
 	packet_length_fix,
+	/*
+	 * Used when the size of payload isn't known in advance. It requires the
+	 * transmitter to send the length byte in each packet so the receiver
+	 * would know how to operate properly
+	 */
 	packet_length_var
 };
 
 enum tx_start_condition {
+	/* the number of bytes in the FIFO exceeds FIFO_THRESHOLD */
 	fifo_level,
+	/* at least one byte in the FIFO */
 	fifo_not_empty
 };