V4L/DVB (6965): tda18271: fix analog tuning regression caused by earlier changeset

An earlier patch, "tda18271: fail table lookups if frequency is out of range"
broke analog support on certain hardware.  This patch fixes that problem, by
allowing the RF_CAL byte to be set to the maximum value, in cases of the
frequency being out of range.
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

drivers/media/dvb/frontends/tda18271-common.c

@@ -601,13 +601,11 @@ int tda18271_calc_rf_cal(struct dvb_frontend *fe, u32 *freq)
 	unsigned char *regs = priv->tda18271_regs;
 	u8 val;
 
-	int ret = tda18271_lookup_map(fe, RF_CAL, freq, &val);
-	if (ret < 0)
-		goto fail;
+	tda18271_lookup_map(fe, RF_CAL, freq, &val);
 
 	regs[R_EB14] = val;
-fail:
-	return ret;
+
+	return 0;
 }
 
 /*

drivers/media/dvb/frontends/tda18271-tables.c

@@ -1098,7 +1098,7 @@ int tda18271_lookup_pll_map(struct dvb_frontend *fe,
 	}
 
 	while ((map[i].lomax * 1000) < *freq) {
-		if (map[i].lomax == 0) {
+		if (map[i + 1].lomax == 0) {
 			tda_map("%s: frequency (%d) out of range\n",
 				map_name, *freq);
 			ret = -ERANGE;
@@ -1169,7 +1169,7 @@ int tda18271_lookup_map(struct dvb_frontend *fe,
 	}
 
 	while ((map[i].rfmax * 1000) < *freq) {
-		if (map[i].rfmax == 0) {
+		if (map[i + 1].rfmax == 0) {
 			tda_map("%s: frequency (%d) out of range\n",
 				map_name, *freq);
 			ret = -ERANGE;