diff --git a/[refs] b/[refs]
index 1b594a44aeba..deee4c3f4d4c 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 97f7a2ae1a8a1e44a481456375efced75210e5eb
+refs/heads/master: 96506a5086d0e9fd7332d6da74f115fa37bb58c6
diff --git a/trunk/drivers/media/dvb/frontends/stv090x.c b/trunk/drivers/media/dvb/frontends/stv090x.c
index 9a817a69ed30..e903334a8323 100644
--- a/trunk/drivers/media/dvb/frontends/stv090x.c
+++ b/trunk/drivers/media/dvb/frontends/stv090x.c
@@ -758,6 +758,9 @@ static int stv090x_i2c_gate_ctrl(struct dvb_frontend *fe, int enable)
 	struct stv090x_state *state = fe->demodulator_priv;
 	u32 reg;
 
+	if (enable)
+		mutex_lock(&state->internal->tuner_lock);
+
 	reg = STV090x_READ_DEMOD(state, I2CRPT);
 	if (enable) {
 		dprintk(FE_DEBUG, 1, "Enable Gate");
@@ -771,9 +774,14 @@ static int stv090x_i2c_gate_ctrl(struct dvb_frontend *fe, int enable)
 		if ((STV090x_WRITE_DEMOD(state, I2CRPT, reg)) < 0)
 			goto err;
 	}
+
+	if (!enable)
+		mutex_unlock(&state->internal->tuner_lock);
+
 	return 0;
 err:
 	dprintk(FE_ERROR, 1, "I/O error");
+	mutex_unlock(&state->internal->tuner_lock);
 	return -1;
 }
 
@@ -4439,6 +4447,7 @@ struct dvb_frontend *stv090x_attach(const struct stv090x_config *config,
 	}
 
 	mutex_init(&state->internal->demod_lock);
+	mutex_init(&state->internal->tuner_lock);
 
 	if (stv090x_sleep(&state->frontend) < 0) {
 		dprintk(FE_ERROR, 1, "Error putting device to sleep");
diff --git a/trunk/drivers/media/dvb/frontends/stv090x_priv.h b/trunk/drivers/media/dvb/frontends/stv090x_priv.h
index d38542665b0a..5b780c80d496 100644
--- a/trunk/drivers/media/dvb/frontends/stv090x_priv.h
+++ b/trunk/drivers/media/dvb/frontends/stv090x_priv.h
@@ -235,6 +235,7 @@ struct stv090x_internal {
 	u8			i2c_addr;
 
 	struct mutex		demod_lock; /* Lock access to shared register */
+	struct mutex		tuner_lock; /* Lock access to tuners */
 	s32			mclk; /* Masterclock Divider factor */
 	u32			dev_ver;