diff options
Diffstat (limited to 'drivers/iio/adc/ad799x.c')
| -rw-r--r-- | drivers/iio/adc/ad799x.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/iio/adc/ad799x.c b/drivers/iio/adc/ad799x.c index b757cc45c4de..0f0dcd9ca6b6 100644 --- a/drivers/iio/adc/ad799x.c +++ b/drivers/iio/adc/ad799x.c @@ -128,7 +128,7 @@ struct ad799x_state { struct regulator *vref; /* lock to protect against multiple access to the device */ struct mutex lock; - unsigned id; + unsigned int id; u16 config; u8 *rx_buf; @@ -253,7 +253,7 @@ static int ad799x_update_scan_mode(struct iio_dev *indio_dev, } } -static int ad799x_scan_direct(struct ad799x_state *st, unsigned ch) +static int ad799x_scan_direct(struct ad799x_state *st, unsigned int ch) { u8 cmd; @@ -335,6 +335,7 @@ static ssize_t ad799x_read_frequency(struct device *dev, struct ad799x_state *st = iio_priv(indio_dev); int ret = i2c_smbus_read_byte_data(st->client, AD7998_CYCLE_TMR_REG); + if (ret < 0) return ret; @@ -523,7 +524,7 @@ done: return IRQ_HANDLED; } -static IIO_DEV_ATTR_SAMP_FREQ(S_IWUSR | S_IRUGO, +static IIO_DEV_ATTR_SAMP_FREQ(0644, ad799x_read_frequency, ad799x_write_frequency); static IIO_CONST_ATTR_SAMP_FREQ_AVAIL("15625 7812 3906 1953 976 488 244 0"); |