staging:iio:mxs-lradc: Remove redundant call to iio_sw_buffer_preenable()

The equivalent of iio_sw_buffer_preenable() is now done in the IIO buffer core,
so there is no need to do this from the driver anymore.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Cc: Marek Vasut <marex@denx.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

diff --git a/drivers/staging/iio/adc/mxs-lradc.c b/drivers/staging/iio/adc/mxs-lradc.c
index dfd1bc1..1bb03e1 100644 (file)
--- a/drivers/staging/iio/adc/mxs-lradc.c
+++ b/drivers/staging/iio/adc/mxs-lradc.c
@@ -1041,10 +1041,6 @@ static int mxs_lradc_buffer_preenable(struct iio_dev *iio)
                goto err_mem;
        }
 
-       ret = iio_sw_buffer_preenable(iio);
-       if (ret < 0)
-               goto err_buf;
-
        if (lradc->soc == IMX28_LRADC)
                mxs_lradc_reg_clear(lradc, LRADC_CTRL1_MX28_LRADC_IRQ_EN_MASK,
                                                        LRADC_CTRL1);
@@ -1069,8 +1065,6 @@ static int mxs_lradc_buffer_preenable(struct iio_dev *iio)
 
        return 0;
 
-err_buf:
-       kfree(lradc->buffer);
 err_mem:
        mutex_unlock(&lradc->lock);
        return ret;