V4L/DVB (11791): xc5000: do not sleep after digital tuning

Don't sleep for 400ms polling the tuner's lock if in digital mode (since the
xc5000 lock status registers appear to only be reliable in analog mode)

Signed-off-by: Devin Heitmueller <devin.heitmueller@gmail.com>
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/common/tuners/xc5000.c

@@ -490,7 +490,9 @@ static u16 WaitForLock(struct xc5000_priv *priv)
 	return lockState;
 }
 
-static int xc_tune_channel(struct xc5000_priv *priv, u32 freq_hz)
+#define XC_TUNE_ANALOG  0
+#define XC_TUNE_DIGITAL 1
+static int xc_tune_channel(struct xc5000_priv *priv, u32 freq_hz, int mode)
 {
 	int found = 0;
 
@@ -499,8 +501,10 @@ static int xc_tune_channel(struct xc5000_priv *priv, u32 freq_hz)
 	if (xc_set_RF_frequency(priv, freq_hz) != XC_RESULT_SUCCESS)
 		return 0;
 
-	if (WaitForLock(priv) == 1)
-		found = 1;
+	if (mode == XC_TUNE_ANALOG) {
+		if (WaitForLock(priv) == 1)
+			found = 1;
+	}
 
 	return found;
 }
@@ -662,7 +666,7 @@ static int xc5000_set_params(struct dvb_frontend *fe,
 		return -EIO;
 	}
 
-	xc_tune_channel(priv, priv->freq_hz);
+	xc_tune_channel(priv, priv->freq_hz, XC_TUNE_DIGITAL);
 
 	if (debug)
 		xc_debug_dump(priv);
@@ -769,7 +773,7 @@ tune_channel:
 		return -EREMOTEIO;
 	}
 
-	xc_tune_channel(priv, priv->freq_hz);
+	xc_tune_channel(priv, priv->freq_hz, XC_TUNE_ANALOG);
 
 	if (debug)
 		xc_debug_dump(priv);