From: Mauro Carvalho Chehab <mchehab@redhat.com>
Date: Tue, 22 Jan 2013 10:49:39 +0000 (-0200)
Subject: [media] mb86a20s: Split status read logic from DVB callback
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=d36e418a7b1eaeb006ee304533054e2720537db7;p=linux-beck.git

[media] mb86a20s: Split status read logic from DVB callback

Split the logic that reads the status from the DVB callback. That
helps to properly return an error code, if status read fails.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
---

diff --git a/drivers/media/dvb-frontends/mb86a20s.c b/drivers/media/dvb-frontends/mb86a20s.c
index 8f4fff1f0fa5..03b74d3afd8f 100644
--- a/drivers/media/dvb-frontends/mb86a20s.c
+++ b/drivers/media/dvb-frontends/mb86a20s.c
@@ -320,16 +320,14 @@ static int mb86a20s_read_signal_strength(struct dvb_frontend *fe, u16 *strength)
 static int mb86a20s_read_status(struct dvb_frontend *fe, fe_status_t *status)
 {
 	struct mb86a20s_state *state = fe->demodulator_priv;
-	u8 val;
+	int val;
 
 	dprintk("\n");
 	*status = 0;
 
-	if (fe->ops.i2c_gate_ctrl)
-		fe->ops.i2c_gate_ctrl(fe, 0);
 	val = mb86a20s_readreg(state, 0x0a) & 0xf;
-	if (fe->ops.i2c_gate_ctrl)
-		fe->ops.i2c_gate_ctrl(fe, 1);
+	if (val < 0)
+		return val;
 
 	if (val >= 2)
 		*status |= FE_HAS_SIGNAL;
@@ -635,6 +633,25 @@ error:
 
 }
 
+static int mb86a20s_read_status_gate(struct dvb_frontend *fe,
+				     fe_status_t *status)
+{
+	int ret;
+
+	dprintk("\n");
+	*status = 0;
+
+	if (fe->ops.i2c_gate_ctrl)
+		fe->ops.i2c_gate_ctrl(fe, 0);
+
+	ret = mb86a20s_read_status(fe, status);
+
+	if (fe->ops.i2c_gate_ctrl)
+		fe->ops.i2c_gate_ctrl(fe, 1);
+
+	return ret;
+}
+
 static int mb86a20s_tune(struct dvb_frontend *fe,
 			bool re_tune,
 			unsigned int mode_flags,
@@ -649,7 +666,7 @@ static int mb86a20s_tune(struct dvb_frontend *fe,
 		rc = mb86a20s_set_frontend(fe);
 
 	if (!(mode_flags & FE_TUNE_MODE_ONESHOT))
-		mb86a20s_read_status(fe, status);
+		mb86a20s_read_status_gate(fe, status);
 
 	return rc;
 }
@@ -730,7 +747,7 @@ static struct dvb_frontend_ops mb86a20s_ops = {
 	.init = mb86a20s_initfe,
 	.set_frontend = mb86a20s_set_frontend,
 	.get_frontend = mb86a20s_get_frontend,
-	.read_status = mb86a20s_read_status,
+	.read_status = mb86a20s_read_status_gate,
 	.read_signal_strength = mb86a20s_read_signal_strength,
 	.tune = mb86a20s_tune,
 };