diff options
Diffstat (limited to 'drivers/staging/iio/addac/adt7316.c')
| -rw-r--r-- | drivers/staging/iio/addac/adt7316.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/staging/iio/addac/adt7316.c b/drivers/staging/iio/addac/adt7316.c index 0ee925edad04..773ce92482db 100644 --- a/drivers/staging/iio/addac/adt7316.c +++ b/drivers/staging/iio/addac/adt7316.c @@ -127,6 +127,7 @@ */ #define ADT7316_DA_2VREF_CH_MASK 0xF #define ADT7316_DA_EN_MODE_MASK 0x30 +#define ADT7316_DA_EN_MODE_SHIFT 4 #define ADT7316_DA_EN_MODE_SINGLE 0x00 #define ADT7316_DA_EN_MODE_AB_CD 0x10 #define ADT7316_DA_EN_MODE_ABCD 0x20 @@ -884,11 +885,11 @@ static ssize_t adt7316_store_DAC_update_mode(struct device *dev, return -EPERM; ret = kstrtou8(buf, 10, &data); - if (ret || data > ADT7316_DA_EN_MODE_MASK) + if (ret || data > (ADT7316_DA_EN_MODE_MASK >> ADT7316_DA_EN_MODE_SHIFT)) return -EINVAL; dac_config = chip->dac_config & (~ADT7316_DA_EN_MODE_MASK); - dac_config |= data; + dac_config |= data << ADT7316_DA_EN_MODE_SHIFT; ret = chip->bus.write(chip->bus.client, ADT7316_DAC_CONFIG, dac_config); if (ret) |