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

commit 2a54c8c9ebc2006bf72554afc84ffc67768979a0 upstream.

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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/iio/gyro/fxas21002c_core.c b/drivers/iio/gyro/fxas21002c_core.c
index 89d2bb2282eac9c442a8904928d7e1f6a0ef3162..958cf8b6002ca85d263d290dc5cf5da3c32538fb 100644 (file)
--- a/drivers/iio/gyro/fxas21002c_core.c
+++ b/drivers/iio/gyro/fxas21002c_core.c
@@ -333,6 +333,7 @@ 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;
        }
 
@@ -366,6 +367,7 @@ 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;
        }