[media] af9033: remove all DVBv3 stat calculation logic

Statistics are now calculated for DVBv5 and those DVBv5 values are
returned for legacy DVBv3 calls also. So we could remove all old
statistics calculation logic.
Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

drivers/media/dvb-frontends/af9033.c

@@ -36,15 +36,12 @@ struct af9033_dev {
 	bool ts_mode_serial;
 
 	fe_status_t fe_status;
-	u32 ber;
-	u32 ucb;
 	u64 post_bit_error_prev; /* for old read_ber we return (curr - prev) */
 	u64 post_bit_error;
 	u64 post_bit_count;
 	u64 error_block_count;
 	u64 total_block_count;
 	struct delayed_work stat_work;
-	unsigned long last_stat_check;
 };
 
 /* write multiple registers */
@@ -870,52 +867,6 @@ static int af9033_read_signal_strength(struct dvb_frontend *fe, u16 *strength)
 	return ret;
 }
 
-static int af9033_update_ch_stat(struct af9033_dev *dev)
-{
-	int ret = 0;
-	u32 err_cnt, bit_cnt;
-	u16 abort_cnt;
-	u8 buf[7];
-
-	/* only update data every half second */
-	if (time_after(jiffies, dev->last_stat_check + msecs_to_jiffies(500))) {
-		ret = af9033_rd_regs(dev, 0x800032, buf, sizeof(buf));
-		if (ret < 0)
-			goto err;
-		/* in 8 byte packets? */
-		abort_cnt = (buf[1] << 8) + buf[0];
-		/* in bits */
-		err_cnt = (buf[4] << 16) + (buf[3] << 8) + buf[2];
-		/* in 8 byte packets? always(?) 0x2710 = 10000 */
-		bit_cnt = (buf[6] << 8) + buf[5];
-
-		if (bit_cnt < abort_cnt) {
-			abort_cnt = 1000;
-			dev->ber = 0xffffffff;
-		} else {
-			/*
-			 * 8 byte packets, that have not been rejected already
-			 */
-			bit_cnt -= (u32)abort_cnt;
-			if (bit_cnt == 0) {
-				dev->ber = 0xffffffff;
-			} else {
-				err_cnt -= (u32)abort_cnt * 8 * 8;
-				bit_cnt *= 8 * 8;
-				dev->ber = err_cnt * (0xffffffff / bit_cnt);
-			}
-		}
-		dev->ucb += abort_cnt;
-		dev->last_stat_check = jiffies;
-	}
-
-	return 0;
-err:
-	dev_dbg(&dev->client->dev, "failed=%d\n", ret);
-
-	return ret;
-}
-
 static int af9033_read_ber(struct dvb_frontend *fe, u32 *ber)
 {
 	struct af9033_dev *dev = fe->demodulator_priv;