summaryrefslogtreecommitdiff
path: root/drivers/iio/light/si1145.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/iio/light/si1145.c')
-rw-r--r--drivers/iio/light/si1145.c19
1 files changed, 11 insertions, 8 deletions
diff --git a/drivers/iio/light/si1145.c b/drivers/iio/light/si1145.c
index 8f5f857c2e7d..b304801c7916 100644
--- a/drivers/iio/light/si1145.c
+++ b/drivers/iio/light/si1145.c
@@ -168,6 +168,7 @@ struct si1145_part_info {
* @part_info: Part information
* @trig: Pointer to iio trigger
* @meas_rate: Value of MEAS_RATE register. Only set in HW in auto mode
+ * @buffer: Used to pack data read from sensor.
*/
struct si1145_data {
struct i2c_client *client;
@@ -179,6 +180,14 @@ struct si1145_data {
bool autonomous;
struct iio_trigger *trig;
int meas_rate;
+ /*
+ * Ensure timestamp will be naturally aligned if present.
+ * Maximum buffer size (may be only partly used if not all
+ * channels are enabled):
+ * 6*2 bytes channels data + 4 bytes alignment +
+ * 8 bytes timestamp
+ */
+ u8 buffer[24] __aligned(8);
};
/*
@@ -440,12 +449,6 @@ static irqreturn_t si1145_trigger_handler(int irq, void *private)
struct iio_poll_func *pf = private;
struct iio_dev *indio_dev = pf->indio_dev;
struct si1145_data *data = iio_priv(indio_dev);
- /*
- * Maximum buffer size:
- * 6*2 bytes channels data + 4 bytes alignment +
- * 8 bytes timestamp
- */
- u8 buffer[24];
int i, j = 0;
int ret;
u8 irq_status = 0;
@@ -478,7 +481,7 @@ static irqreturn_t si1145_trigger_handler(int irq, void *private)
ret = i2c_smbus_read_i2c_block_data_or_emulated(
data->client, indio_dev->channels[i].address,
- sizeof(u16) * run, &buffer[j]);
+ sizeof(u16) * run, &data->buffer[j]);
if (ret < 0)
goto done;
j += run * sizeof(u16);
@@ -493,7 +496,7 @@ static irqreturn_t si1145_trigger_handler(int irq, void *private)
goto done;
}
- iio_push_to_buffers_with_timestamp(indio_dev, buffer,
+ iio_push_to_buffers_with_timestamp(indio_dev, data->buffer,
iio_get_time_ns(indio_dev));
done: