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path: root/drivers/iio/chemical/ccs811.c
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Diffstat (limited to 'drivers/iio/chemical/ccs811.c')
-rw-r--r--drivers/iio/chemical/ccs811.c13
1 files changed, 9 insertions, 4 deletions
diff --git a/drivers/iio/chemical/ccs811.c b/drivers/iio/chemical/ccs811.c
index 2ebdfc35bcda..7bf4e9a16a6a 100644
--- a/drivers/iio/chemical/ccs811.c
+++ b/drivers/iio/chemical/ccs811.c
@@ -75,6 +75,11 @@ struct ccs811_data {
struct ccs811_reading buffer;
struct iio_trigger *drdy_trig;
bool drdy_trig_on;
+ /* Ensures correct alignment of timestamp if present */
+ struct {
+ s16 channels[2];
+ s64 ts __aligned(8);
+ } scan;
};
static const struct iio_chan_spec ccs811_channels[] = {
@@ -306,17 +311,17 @@ static irqreturn_t ccs811_trigger_handler(int irq, void *p)
struct iio_dev *indio_dev = pf->indio_dev;
struct ccs811_data *data = iio_priv(indio_dev);
struct i2c_client *client = data->client;
- s16 buf[8]; /* s16 eCO2 + s16 TVOC + padding + 8 byte timestamp */
int ret;
- ret = i2c_smbus_read_i2c_block_data(client, CCS811_ALG_RESULT_DATA, 4,
- (u8 *)&buf);
+ ret = i2c_smbus_read_i2c_block_data(client, CCS811_ALG_RESULT_DATA,
+ sizeof(data->scan.channels),
+ (u8 *)data->scan.channels);
if (ret != 4) {
dev_err(&client->dev, "cannot read sensor data\n");
goto err;
}
- iio_push_to_buffers_with_timestamp(indio_dev, buf,
+ iio_push_to_buffers_with_timestamp(indio_dev, &data->scan,
iio_get_time_ns(indio_dev));
err: