enable i2c repeater mode before applying filter bandwidth

src/rtl-sdr.c

@@ -509,13 +509,9 @@ int rtlsdr_deinit_baseband(rtlsdr_dev_t *dev)
 	if (!dev)
 		return -1;
 
-	if (dev->tuner) {
-		/* deinitialize tuner */
+	if (dev->tuner && dev->tuner->exit) {
 		rtlsdr_set_i2c_repeater(dev, 1);
-
-		if (dev->tuner->exit)
-			r = dev->tuner->exit(dev);
-
+		r = dev->tuner->exit(dev); /* deinitialize tuner */
 		rtlsdr_set_i2c_repeater(dev, 0);
 	}
 
@@ -585,18 +581,16 @@ int rtlsdr_set_center_freq(rtlsdr_dev_t *dev, uint32_t freq)
 		return -1;
 
 	if (dev->tuner->set_freq) {
-		rtlsdr_set_i2c_repeater(dev, 1);
-
 		f *= 1.0 + dev->corr / 1e6;
 
+		rtlsdr_set_i2c_repeater(dev, 1);
 		r = dev->tuner->set_freq(dev, (uint32_t) f);
+		rtlsdr_set_i2c_repeater(dev, 0);
 
 		if (!r)
 			dev->freq = freq;
 		else
 			dev->freq = 0;
-
-		rtlsdr_set_i2c_repeater(dev, 0);
 	}
 
 	return r;
@@ -681,8 +675,6 @@ int rtlsdr_set_tuner_gain_mode(rtlsdr_dev_t *dev, int mode)
 	return r;
 }
 
-
-
 int rtlsdr_set_sample_rate(rtlsdr_dev_t *dev, uint32_t samp_rate)
 {
 	uint16_t tmp;
@@ -704,8 +696,11 @@ int rtlsdr_set_sample_rate(rtlsdr_dev_t *dev, uint32_t samp_rate)
 	if ( ((double)samp_rate) != real_rate )
 		fprintf(stderr, "Exact sample rate is: %f Hz\n", real_rate);
 
-	if (dev->tuner && dev->tuner->set_bw)
+	if (dev->tuner && dev->tuner->set_bw) {
+		rtlsdr_set_i2c_repeater(dev, 1);
 		dev->tuner->set_bw(dev, real_rate);
+		rtlsdr_set_i2c_repeater(dev, 0);
+	}
 
 	dev->rate = samp_rate;