iio: adc: meson-saradc: fix potential crash in meson_sar_adc_clear_fifo

[karo-tx-linux.git] / drivers / iio / adc / meson_saradc.c

diff --git a/drivers/iio/adc/meson_saradc.c b/drivers/iio/adc/meson_saradc.c
index dd4190b50df6a71a43d0fb22175ddb3f1e7d64c7..6066bbfc42fe4126a849495563e1eae58d4244d4 100644 (file)
--- a/drivers/iio/adc/meson_saradc.c
+++ b/drivers/iio/adc/meson_saradc.c
@@ -468,13 +468,13 @@ static void meson_sar_adc_unlock(struct iio_dev *indio_dev)
 static void meson_sar_adc_clear_fifo(struct iio_dev *indio_dev)
 {
        struct meson_sar_adc_priv *priv = iio_priv(indio_dev);
-       int count;
+       unsigned int count, tmp;
 
        for (count = 0; count < MESON_SAR_ADC_MAX_FIFO_SIZE; count++) {
                if (!meson_sar_adc_get_fifo_count(indio_dev))
                        break;
 
-               regmap_read(priv->regmap, MESON_SAR_ADC_FIFO_RD, 0);
+               regmap_read(priv->regmap, MESON_SAR_ADC_FIFO_RD, &tmp);
        }
 }