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| author | Michael Hennerich <michael.hennerich@analog.com> | 2010-10-06 12:25:49 +0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-10-06 19:22:44 +0400 |
| commit | aecac19179180b7d6cda13f598e314c0870aee80 (patch) | |
| tree | 70209aa05bfd1be1dae95f2c2016d37dcc0e22fd | |
| parent | e1517c00da6d35911b6451f886d55e22d56393ad (diff) | |
| download | linux-aecac19179180b7d6cda13f598e314c0870aee80.tar.xz | |
staging: iio: adc: ad799x: Address iio list feedback
Address feedback from Shubhrajyoti Datta:
Cast return value
Michael Hennerich:
Use i2c_smbus_read_byte_data()
Fix return value check
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| -rw-r--r-- | drivers/staging/iio/adc/ad799x_core.c | 11 |
1 files changed, 5 insertions, 6 deletions
diff --git a/drivers/staging/iio/adc/ad799x_core.c b/drivers/staging/iio/adc/ad799x_core.c index dca3f2ae6a14..25898563aae8 100644 --- a/drivers/staging/iio/adc/ad799x_core.c +++ b/drivers/staging/iio/adc/ad799x_core.c @@ -65,13 +65,13 @@ static int ad799x_i2c_read8(struct ad799x_state *st, u8 reg, u8 *data) struct i2c_client *client = st->client; int ret = 0; - ret = i2c_smbus_read_word_data(client, reg); + ret = i2c_smbus_read_byte_data(client, reg); if (ret < 0) { dev_err(&client->dev, "I2C read error\n"); return ret; } - *data = ret; + *data = (u8)ret; return 0; } @@ -182,11 +182,10 @@ static ssize_t ad799x_read_single_channel(struct device *dev, mask = 1 << this_attr->address; /* If ring buffer capture is occuring, query the buffer */ if (iio_ring_enabled(dev_info)) { - data = ad799x_single_channel_from_ring(st, mask); - if (data < 0) { - ret = data; + data = ret = ad799x_single_channel_from_ring(st, mask); + if (ret < 0) goto error_ret; - } + ret = 0; } else { switch (st->id) { case ad7991: |