iio: gyro: fxas21002c: balance runtime power in error path

If we fail to read temperature or axis we need to decrement the
runtime pm reference count to trigger autosuspend.

Add the call to pm_put to do that in case of error.

Fixes: a0701b6263ae ("iio: gyro: add core driver for fxas21002c")
Suggested-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Rui Miguel Silva <rui.silva@linaro.org>
Link: https://lore.kernel.org/linux-iio/CBBZA9T1OY9C.2611WSV49DV2G@arch-thunder/
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

diff --git a/drivers/iio/gyro/fxas21002c_core.c b/drivers/iio/gyro/fxas21002c_core.c
index 1a20c6b88e7db5cf3b28665ab25ab17c9c270882..645461c70454777f0745f128107c3e25f64bfc0a 100644 (file)
--- a/drivers/iio/gyro/fxas21002c_core.c
+++ b/drivers/iio/gyro/fxas21002c_core.c
@@ -399,6 +399,7 @@ static int fxas21002c_temp_get(struct fxas21002c_data *data, int *val)
        ret = regmap_field_read(data->regmap_fields[F_TEMP], &temp);
        if (ret < 0) {
                dev_err(dev, "failed to read temp: %d\n", ret);
+               fxas21002c_pm_put(data);
                goto data_unlock;
        }
 
@@ -432,6 +433,7 @@ static int fxas21002c_axis_get(struct fxas21002c_data *data,
                               &axis_be, sizeof(axis_be));
        if (ret < 0) {
                dev_err(dev, "failed to read axis: %d: %d\n", index, ret);
+               fxas21002c_pm_put(data);
                goto data_unlock;
        }