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staging: iio: add check for measurement configuration value passed to hmc5843

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Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
Acked-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Peter Meerwald 2012-05-17 02:28:09 +02:00 committed by Greg Kroah-Hartman
parent 13f6eb69b1
commit e278df1c82
1 changed files with 6 additions and 1 deletions
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7
drivers/staging/iio/magnetometer/hmc5843.c
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@ -281,9 +281,14 @@ static ssize_t hmc5843_set_measurement_configuration(struct device *dev,
struct i2c_client *client = to_i2c_client(indio_dev->dev.parent);
struct hmc5843_data *data = iio_priv(indio_dev);
unsigned long meas_conf = 0;
int error = kstrtoul(buf, 10, &meas_conf);
int error;
error = kstrtoul(buf, 10, &meas_conf);
if (error)
return error;
if (meas_conf >= HMC5843_MEAS_CONF_NOT_USED)
return -EINVAL;
mutex_lock(&data->lock);
dev_dbg(dev, "set mode to %lu\n", meas_conf);