iio: accel: st_sensors: Stop copying channels

The channels were copied only so that the .ext_info member should become
assignable. We now have compile-time static assignment so drop this code.

Cc: Hans de Goede <hdegoede@redhat.com>
Cc: Denis Ciocca <denis.ciocca@st.com>
Cc: Daniel Drake <drake@endlessm.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Stephan Gerhold <stephan@gerhold.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20210518230722.522446-3-linus.walleij@linaro.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

diff --git a/drivers/iio/accel/st_accel_core.c b/drivers/iio/accel/st_accel_core.c
index 9abcebf767b1f1fb6236e954bd3b46755ec8c767..28fceac9f2f6ec8f1bf2ad4aaae0a4792de4174a 100644 (file)
--- a/drivers/iio/accel/st_accel_core.c
+++ b/drivers/iio/accel/st_accel_core.c
@@ -1339,8 +1339,6 @@ int st_accel_common_probe(struct iio_dev *indio_dev)
 {
        struct st_sensor_data *adata = iio_priv(indio_dev);
        struct st_sensors_platform_data *pdata = dev_get_platdata(adata->dev);
-       struct iio_chan_spec *channels;
-       size_t channels_size;
        int err;
 
        indio_dev->modes = INDIO_DIRECT_MODE;
@@ -1351,15 +1349,9 @@ int st_accel_common_probe(struct iio_dev *indio_dev)
                return err;
 
        adata->num_data_channels = ST_ACCEL_NUMBER_DATA_CHANNELS;
+       indio_dev->channels = adata->sensor_settings->ch;
        indio_dev->num_channels = ST_SENSORS_NUMBER_ALL_CHANNELS;
 
-       channels_size = indio_dev->num_channels * sizeof(struct iio_chan_spec);
-       channels = devm_kmemdup(&indio_dev->dev,
-                               adata->sensor_settings->ch,
-                               channels_size, GFP_KERNEL);
-       if (!channels)
-               return -ENOMEM;
-
        /*
         * First try specific ACPI methods to retrieve orientation then try the
         * generic function.
@@ -1371,7 +1363,6 @@ int st_accel_common_probe(struct iio_dev *indio_dev)
                        return err;
        }
 
-       indio_dev->channels = channels;
        adata->current_fullscale = &adata->sensor_settings->fs.fs_avl[0];
        adata->odr = adata->sensor_settings->odr.odr_avl[0].hz;