iio: mxs-lradc: remove useless check

Checking the channel number is useless since mxs_lradc_read_raw() is called from
a controlled environment and the driver is responsible for filing the struct
iio_chan_spec.

Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Acked-by: 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 df71669..7b92241 100644 (file)
--- a/drivers/staging/iio/adc/mxs-lradc.c
+++ b/drivers/staging/iio/adc/mxs-lradc.c
@@ -897,10 +897,6 @@ static int mxs_lradc_read_raw(struct iio_dev *iio_dev,
 {
        struct mxs_lradc *lradc = iio_priv(iio_dev);
 
-       /* Check for invalid channel */
-       if (chan->channel > LRADC_MAX_TOTAL_CHANS)
-               return -EINVAL;
-
        switch (m) {
        case IIO_CHAN_INFO_RAW:
                if (chan->type == IIO_TEMP)