[PATCH] dvb: frontend: tda1004x: fix SNR reading

Fix SNR reading
Signed-off-by: NAndrew de Quincey <adq_dvb@lidskialf.net>
Signed-off-by: NJohannes Stezenbach <js@linuxtv.org>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

drivers/media/dvb/frontends/tda1004x.c

@@ -1046,8 +1046,7 @@ static int tda1004x_read_snr(struct dvb_frontend* fe, u16 * snr)
 	tmp = tda1004x_read_byte(state, TDA1004X_SNR);
 	if (tmp < 0)
 		return -EIO;
-	if (tmp)
-		tmp = 255 - tmp;
+	tmp = 255 - tmp;
 
 	*snr = ((tmp << 8) | tmp);
 	dprintk("%s: snr=0x%x\n", __FUNCTION__, *snr);