staging:iio:resolver:ad2s1210 drop raw config register access

This should never have been exposed to userspace
Signed-off-by: NJonathan Cameron <jic23@cam.ac.uk>
Acked-by: NMichael Hennerich <michael.hennerich@analog.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

drivers/staging/iio/resolver/ad2s1210.c

@@ -195,47 +195,6 @@ static inline int ad2s1210_soft_reset(struct ad2s1210_state *st)
 	return ad2s1210_config_write(st, 0x0);
 }
 
-
-/* return the OLD DATA since last spi bus write */
-static ssize_t ad2s1210_show_raw(struct device *dev,
-				 struct device_attribute *attr,
-				 char *buf)
-{
-	struct ad2s1210_state *st = iio_priv(dev_get_drvdata(dev));
-	int ret = 0;
-
-	mutex_lock(&st->lock);
-	if (st->old_data) {
-		ret = sprintf(buf, "0x%x\n", st->rx[0]);
-		st->old_data = false;
-	}
-	mutex_unlock(&st->lock);
-
-	return ret;
-}
-
-static ssize_t ad2s1210_store_raw(struct device *dev,
-				  struct device_attribute *attr,
-				  const char *buf,
-				  size_t len)
-{
-	struct ad2s1210_state *st = iio_priv(dev_get_drvdata(dev));
-	unsigned long udata;
-	unsigned char data;
-	int ret;
-
-	ret = strict_strtoul(buf, 16, &udata);
-	if (ret)
-		return -EINVAL;
-
-	data = udata & 0xff;
-	mutex_lock(&st->lock);
-	ret = ad2s1210_config_write(st, data);
-	mutex_unlock(&st->lock);
-
-	return ret < 0 ? ret : len;
-}
-
 static ssize_t ad2s1210_store_softreset(struct device *dev,
 					struct device_attribute *attr,
 					const char *buf,
@@ -580,8 +539,6 @@ static int ad2s1210_read_raw(struct iio_dev *indio_dev,
 	return ret;
 }
 
-static IIO_DEVICE_ATTR(raw_io, S_IRUGO | S_IWUSR,
-		       ad2s1210_show_raw, ad2s1210_store_raw, 0);
 static IIO_DEVICE_ATTR(reset, S_IWUSR,
 		       NULL, ad2s1210_store_softreset, 0);
 static IIO_DEVICE_ATTR(fclkin, S_IRUGO | S_IWUSR,
@@ -631,7 +588,6 @@ static struct iio_chan_spec ad2s1210_channels[] = {
 };
 
 static struct attribute *ad2s1210_attributes[] = {
-	&iio_dev_attr_raw_io.dev_attr.attr,
 	&iio_dev_attr_reset.dev_attr.attr,
 	&iio_dev_attr_fclkin.dev_attr.attr,
 	&iio_dev_attr_fexcit.dev_attr.attr,