On Tue 2016-11-15 05:50:32, Guenter Roeck wrote:

On 11/15/2016 04:10 AM, Pavel Machek wrote:

quoted

Hi!

quoted

Add support for OV5647 sensor.

quoted

+static int ov5647_write(struct v4l2_subdev *sd, u16 reg, u8 val)
+{
+	int ret;
+	unsigned char data[3] = { reg >> 8, reg & 0xff, val};
+	struct i2c_client *client = v4l2_get_subdevdata(sd);
+
+	ret = i2c_master_send(client, data, 3);
+	if (ret != 3) {
+		dev_dbg(&client->dev, "%s: i2c write error, reg: %x\n",
+				__func__, reg);
+		return ret < 0 ? ret : -EIO;
+	}
+	return 0;
+}

Sorry, this is wrong. It should something <0 any time error is detected.

It seems to me that it does return a value < 0 each time an error is detected.

Yep, you are right, sorry, I misparsed the code.

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