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iio: st_sensors: make detection more helpful

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The ST sensors are detected by reading a WhoAmI register and
matching the number found to a sensor name string. To make it
easier to figure out what happens when things go wrong, print
the WhoAmI value and the device name we're trying to match.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This commit is contained in:
Linus Walleij 2015-04-30 15:15:49 +02:00 committed by Jonathan Cameron
parent bb60646c8b
commit 5e02bac317
1 changed files with 2 additions and 1 deletions
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3
drivers/iio/common/st_sensors/st_sensors_core.c
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@ -503,7 +503,8 @@ int st_sensors_check_device_support(struct iio_dev *indio_dev,
break;
}
if (n == ARRAY_SIZE(sensor_settings[i].sensors_supported)) {
dev_err(&indio_dev->dev, "device name and WhoAmI mismatch.\n");
dev_err(&indio_dev->dev, "device name \"%s\" and WhoAmI (0x%02x) mismatch",
indio_dev->name, wai);
goto sensor_name_mismatch;
}