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

This should never have been exposed to userspace

Signed-off-by: Jonathan Cameron <jic23@cam.ac.uk>
Acked-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/staging/iio/resolver/ad2s1210.c b/drivers/staging/iio/resolver/ad2s1210.c
index 697db80df9c1168a29cad510004b1ec582ee0e47..4f248de156e8698456ba0971a945de369d3b5342 100644 (file)
--- a/drivers/staging/iio/resolver/ad2s1210.c
+++ b/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 @@ error_ret:
        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,