Commit 1f202725 authored Jan 01, 2015 by Stefan Wahren Committed by Jonathan Cameron Jan 05, 2015

iio: inkern: add out of range error message



If the DT contains an invalid channel specifier then the probe of
iio_hwmon fails with the following message:

iio_hwmon: probe of iio_hwmon failed with error -22

So it's better to print out the relevant channel specifier in
error case to locate the problem.

Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

parent 4193c0f1

drivers/iio/inkern.c

+4 −1

Original line number	Diff line number	Diff line
		@@ -116,8 +116,11 @@ static int __of_iio_simple_xlate(struct iio_dev *indio_dev,
		if (!iiospec->args_count)
		return 0;

		if (iiospec->args[0] >= indio_dev->num_channels)
		if (iiospec->args[0] >= indio_dev->num_channels) {
		dev_err(&indio_dev->dev, "invalid channel index %u\n",
		iiospec->args[0]);
		return -EINVAL;
		}

		return iiospec->args[0];
		}