6.6-stable review patch. If anyone has any objections, please let me know.
------------------
From: Carlos Song <carlos.song@xxxxxxx>
commit fa13ac6cdf9b6c358e7d77c29fb60145c7a87965 upstream.
The fxas21002c_trigger_handler() may fail to acquire sample data because
the runtime PM enters the autosuspend state and sensor can not return
sample data in standby mode..
Resume the sensor before reading the sample data into the buffer within the
trigger handler. After the data is read, place the sensor back into the
autosuspend state.
Fixes: a0701b6263ae ("iio: gyro: add core driver for fxas21002c")
Signed-off-by: Carlos Song <carlos.song@xxxxxxx>
Signed-off-by: Frank Li <Frank.Li@xxxxxxx>
Link: https://patch.msgid.link/20241116152945.4006374-1-Frank.Li@xxxxxxx
Cc: <Stable@xxxxxxxxxxxxxxx>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/iio/gyro/fxas21002c_core.c | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)
--- a/drivers/iio/gyro/fxas21002c_core.c
+++ b/drivers/iio/gyro/fxas21002c_core.c
@@ -730,14 +730,21 @@ static irqreturn_t fxas21002c_trigger_ha
int ret;
mutex_lock(&data->lock);
+ ret = fxas21002c_pm_get(data);
+ if (ret < 0)
+ goto out_unlock;
+
ret = regmap_bulk_read(data->regmap, FXAS21002C_REG_OUT_X_MSB,
data->buffer, CHANNEL_SCAN_MAX * sizeof(s16));
if (ret < 0)
- goto out_unlock;
+ goto out_pm_put;
iio_push_to_buffers_with_timestamp(indio_dev, data->buffer,
data->timestamp);
+out_pm_put:
+ fxas21002c_pm_put(data);
+
out_unlock:
mutex_unlock(&data->lock);
