[patch 12/23] DVB: s5h1411: Perform s5h1411 soft reset after tuning

[Greg KH]

2.6.26-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Devin Heitmueller <devin.heitmueller@xxxxxxxxx>

commit f0d041e50bc6c8a677922d72b010f80af9b23b18 upstream.

DVB: s5h1411: Perform s5h1411 soft reset after tuning

If you instruct the tuner to change frequencies, it can take up to 2500ms to
get a demod lock.  By performing a soft reset after the tuning call (which
is consistent with how the Pinnacle 801e Windows driver behaves), you get
a demod lock inside of 300ms

Signed-off-by: Devin Heitmueller <devin.heitmueller@xxxxxxxxx>
Signed-off-by: Michael Krufky <mkrufky@xxxxxxxxxxx>
Acked-by: Steven Toth <stoth@xxxxxxxxxxx>
Signed-off-by: Mauro Carvalho Chehab <mchehab@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxx>

---
 drivers/media/dvb/frontends/s5h1411.c |    7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

--- a/drivers/media/dvb/frontends/s5h1411.c
+++ b/drivers/media/dvb/frontends/s5h1411.c
@@ -588,9 +588,6 @@ static int s5h1411_set_frontend(struct d
 
 	s5h1411_enable_modulation(fe, p->u.vsb.modulation);
 
-	/* Allow the demod to settle */
-	msleep(100);
-
 	if (fe->ops.tuner_ops.set_params) {
 		if (fe->ops.i2c_gate_ctrl)
 			fe->ops.i2c_gate_ctrl(fe, 1);
@@ -601,6 +598,10 @@ static int s5h1411_set_frontend(struct d
 			fe->ops.i2c_gate_ctrl(fe, 0);
 	}
 
+	/* Issue a reset to the demod so it knows to resync against the
+	   newly tuned frequency */
+	s5h1411_softreset(fe);
+
 	return 0;
 }
 

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