Hi Sanchayan,
On 2015-08-21 06:26, Sanchayan Maity wrote:
> +static int vf50_ts_probe(struct platform_device *pdev)
> +{
> + struct input_dev *input;
> + struct iio_channel *channels;
> + struct device *dev = &pdev->dev;
> + struct vf50_touch_device *touchdev;
> + int error;
> +
> + channels = iio_channel_get_all(dev);
> + if (IS_ERR(channels))
> + return PTR_ERR(channels);
Hm, we expect here that four channels are returned, however a faulty
device tree could contain less. Access to the fourth channel above would
lead to a bug.
Can you check the amount of channels returned? The returned list is
explicitly terminated with a null entry, you can rely on that. Something
similar to hwmon should do the job.
http://lxr.free-electrons.com/source/drivers/hwmon/iio_hwmon.c#L86
Otherwise, Acked-by: Stefan Agner <stefan@xxxxxxxx>
--
Stefan
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