media: rc: nec decoder should not send both repeat and keycode

When receiving an nec repeat, rc_repeat() is called and then rc_keydown()
with the last decoded scancode. That last call is redundant.

Fixes: 265a2988 ("media: rc-core: consistent use of rc_repeat()")

Cc: <stable@vger.kernel.org> # v4.14
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

drivers/media/rc/ir-nec-decoder.c

@@ -87,8 +87,6 @@ static int ir_nec_decode(struct rc_dev *dev, struct ir_raw_event ev)
 			data->state = STATE_BIT_PULSE;
 			return 0;
 		} else if (eq_margin(ev.duration, NEC_REPEAT_SPACE, NEC_UNIT / 2)) {
-			rc_repeat(dev);
-			IR_dprintk(1, "Repeat last key\n");
 			data->state = STATE_TRAILER_PULSE;
 			return 0;
 		}
@@ -151,19 +149,26 @@ static int ir_nec_decode(struct rc_dev *dev, struct ir_raw_event ev)
 		if (!geq_margin(ev.duration, NEC_TRAILER_SPACE, NEC_UNIT / 2))
 			break;
 
+		if (data->count == NEC_NBITS) {
 			address     = bitrev8((data->bits >> 24) & 0xff);
 			not_address = bitrev8((data->bits >> 16) & 0xff);
 			command	    = bitrev8((data->bits >>  8) & 0xff);
 			not_command = bitrev8((data->bits >>  0) & 0xff);
 
-		scancode = ir_nec_bytes_to_scancode(address, not_address,
-						    command, not_command,
+			scancode = ir_nec_bytes_to_scancode(address,
+							    not_address,
+							    command,
+							    not_command,
 							    &rc_proto);
 
 			if (data->is_nec_x)
 				data->necx_repeat = true;
 
 			rc_keydown(dev, rc_proto, scancode, 0);
+		} else {
+			rc_repeat(dev);
+		}
+
 		data->state = STATE_INACTIVE;
 		return 0;
 	}