[media] cx231xx: scan all four existing i2c busses instead of the 3 masters

The scanning itself just fails (as before this series) but now
the correct busses are scanned.
Signed-off-by: Matthias Schwarzott <zzam@gentoo.org>
Reviewed-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

drivers/media/usb/cx231xx/cx231xx-core.c

@@ -1303,6 +1303,12 @@ int cx231xx_dev_init(struct cx231xx *dev)
 	cx231xx_i2c_mux_register(dev, 0);
 	cx231xx_i2c_mux_register(dev, 1);
 
+	/* scan the real bus segments in the order of physical port numbers */
+	cx231xx_do_i2c_scan(dev, I2C_0);
+	cx231xx_do_i2c_scan(dev, I2C_1_MUX_1);
+	cx231xx_do_i2c_scan(dev, I2C_2);
+	cx231xx_do_i2c_scan(dev, I2C_1_MUX_3);
+
 	/* init hardware */
 	/* Note : with out calling set power mode function,
 	afe can not be set up correctly */

drivers/media/usb/cx231xx/cx231xx-i2c.c

@@ -492,6 +492,9 @@ void cx231xx_do_i2c_scan(struct cx231xx *dev, int i2c_port)
 	int i, rc;
 	struct i2c_client client;
 
+	if (!i2c_scan)
+		return;
+
 	memset(&client, 0, sizeof(client));
 	client.adapter = cx231xx_get_i2c_adap(dev, i2c_port);
 
@@ -528,10 +531,7 @@ int cx231xx_i2c_register(struct cx231xx_i2c *bus)
 	i2c_set_adapdata(&bus->i2c_adap, &dev->v4l2_dev);
 	i2c_add_adapter(&bus->i2c_adap);
 
-	if (0 == bus->i2c_rc) {
-		if (i2c_scan)
-			cx231xx_do_i2c_scan(dev, bus->nr);
-	} else
+	if (0 != bus->i2c_rc)
 		cx231xx_warn("%s: i2c bus %d register FAILED\n",
 			     dev->name, bus->nr);