iio:bma180: Drop _update_scan_mode()

statically allocate maximum size

Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
Cc: Oleksandr Kravchenko <o.v.kravchenko@globallogic.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

1 files changed, 1 insertions, 17 deletions

diff --git a/drivers/iio/accel/bma180.c b/drivers/iio/accel/bma180.c
index 91260a071fe9..583831898247 100644
--- a/drivers/iio/accel/bma180.c
+++ b/drivers/iio/accel/bma180.c
@@ -82,7 +82,7 @@ struct bma180_data {
         int scale;
         int bw;
         bool pmode;
-        char *buff;
+        u8 buff[16]; /* 3x 16-bit + 8-bit + padding + timestamp */
 };
 
 enum bma180_chan {
@@ -408,26 +408,10 @@ static int bma180_write_raw(struct iio_dev *indio_dev,
         }
 }
 
-static int bma180_update_scan_mode(struct iio_dev *indio_dev,
-                const unsigned long *scan_mask)
-{
-        struct bma180_data *data = iio_priv(indio_dev);
-
-        if (data->buff)
-                devm_kfree(&indio_dev->dev, data->buff);
-        data->buff = devm_kzalloc(&indio_dev->dev,
-                        indio_dev->scan_bytes, GFP_KERNEL);
-        if (!data->buff)
-                return -ENOMEM;
-
-        return 0;
-}
-
 static const struct iio_info bma180_info = {
         .attrs                  = &bma180_attrs_group,
         .read_raw               = bma180_read_raw,
         .write_raw              = bma180_write_raw,
-        .update_scan_mode       = bma180_update_scan_mode,
         .driver_module          = THIS_MODULE,
 };