diff --git a/drivers/media/IR/ir-nec-decoder.c b/drivers/media/IR/ir-nec-decoder.c
index 33b260f..087211c 100644
--- a/drivers/media/IR/ir-nec-decoder.c
+++ b/drivers/media/IR/ir-nec-decoder.c
@@ -14,38 +14,14 @@
 
 #include <media/ir-core.h>
 
+#define NEC_NBITS		32
 #define NEC_UNIT		559979 /* ns */
 #define NEC_HEADER_MARK		(16 * NEC_UNIT)
 #define NEC_HEADER_SPACE	(8 * NEC_UNIT)
 #define NEC_REPEAT_SPACE	(4 * NEC_UNIT)
 #define NEC_MARK		(NEC_UNIT)
-#define NEC_0_SYMBOL		(NEC_UNIT)
-#define NEC_1_SYMBOL		(3 * NEC_UNIT)
-
-/* Start time: 4.5 ms + 560 us of the next pulse */
-#define MIN_START_TIME	(3900000 + 560000)
-#define MAX_START_TIME	(5100000 + 560000)
-
-/* Bit 1 time: 2.25ms us */
-#define MIN_BIT1_TIME	2050000
-#define MAX_BIT1_TIME	2450000
-
-/* Bit 0 time: 1.12ms us */
-#define MIN_BIT0_TIME	920000
-#define MAX_BIT0_TIME	1320000
-
-/* Total IR code is 110 ms, including the 9 ms for the start pulse */
-#define MAX_NEC_TIME	4000000
-
-/* Total IR code is 110 ms, including the 9 ms for the start pulse */
-#define MIN_REPEAT_TIME	99000000
-#define MAX_REPEAT_TIME	112000000
-
-/* Repeat time: 2.25ms us */
-#define MIN_REPEAT_START_TIME	2050000
-#define MAX_REPEAT_START_TIME	3000000
-
-#define REPEAT_TIME	240 /* ms */
+#define NEC_0_SPACE		(NEC_UNIT)
+#define NEC_1_SPACE		(3 * NEC_UNIT)
 
 /* Used to register nec_decoder clients */
 static LIST_HEAD(decoder_list);
@@ -223,11 +199,11 @@
 		if (last_bit)
 			goto err;
 
-		if ((ev->delta.tv_nsec >= NEC_0_SYMBOL - NEC_UNIT / 2) &&
-		    (ev->delta.tv_nsec < NEC_0_SYMBOL + NEC_UNIT / 2))
+		if ((ev->delta.tv_nsec >= NEC_0_SPACE - NEC_UNIT / 2) &&
+		    (ev->delta.tv_nsec < NEC_0_SPACE + NEC_UNIT / 2))
 			bit = 0;
-		else if ((ev->delta.tv_nsec >= NEC_1_SYMBOL - NEC_UNIT / 2) &&
-		         (ev->delta.tv_nsec < NEC_1_SYMBOL + NEC_UNIT / 2))
+		else if ((ev->delta.tv_nsec >= NEC_1_SPACE - NEC_UNIT / 2) &&
+		         (ev->delta.tv_nsec < NEC_1_SPACE + NEC_UNIT / 2))
 			bit = 1;
 		else {
 			IR_dprintk(1, "Decode failed at %d-th bit (%s) @%luus\n",
@@ -256,7 +232,7 @@
 				data->nec_code.not_command |= 1 << (shift - 24);
 			}
 		}
-		if (++data->count == 32) {
+		if (++data->count == NEC_NBITS) {
 			u32 scancode;
 			/*
 			 * Fixme: may need to accept Extended NEC protocol?