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| author | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2021-05-16 19:21:00 +0300 |
|---|---|---|
| committer | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2021-06-16 16:53:13 +0300 |
| commit | 0e4f336f50debeacd0f81e931e8451f2ae03f685 (patch) | |
| tree | e217e0778abc55b5ba78d78bee640f47b6884c8c /drivers/iio/chemical | |
| parent | 17181d4dc33094cb0c51369e4b5172086a14812b (diff) | |
| download | linux-0e4f336f50debeacd0f81e931e8451f2ae03f685.tar.xz | |
iio: chemical: atlas-sensor: Balance runtime pm + pm_runtime_resume_and_get()
The pm_runtime_put_noidle() call in remove isn't balanced with any get, so
drop it. Note this isn't a bug as the runtime pm core will not allow the
reference count to go negative, making this a noop. However, it is
confusing to the reader so let's drop it.
pm_runtime_resume_and_get() replacement found using the coccicheck script
under review at:
https://lore.kernel.org/lkml/20210427141946.2478411-1-Julia.Lawall@inria.fr/
As pm_runtime_resume_and_get() returns <= 0 take advantage of that to
change the error checking to if (ret) which is more in keeping with the
rest of this driver.
This is a prequel to taking a closer look at the runtime pm in IIO drivers
in general.
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Matt Ranostay <matt.ranostay@konsulko.com>
Acked-by: Matt Ranostay <matt.ranostay@konsulko.com>
Reviewed-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/20210516162103.1332291-4-jic23@kernel.org
Diffstat (limited to 'drivers/iio/chemical')
| -rw-r--r-- | drivers/iio/chemical/atlas-sensor.c | 13 |
1 files changed, 4 insertions, 9 deletions
diff --git a/drivers/iio/chemical/atlas-sensor.c b/drivers/iio/chemical/atlas-sensor.c index 0fdb3b29c5eb..9cb99585b6ff 100644 --- a/drivers/iio/chemical/atlas-sensor.c +++ b/drivers/iio/chemical/atlas-sensor.c @@ -410,11 +410,9 @@ static int atlas_buffer_postenable(struct iio_dev *indio_dev) struct atlas_data *data = iio_priv(indio_dev); int ret; - ret = pm_runtime_get_sync(&data->client->dev); - if (ret < 0) { - pm_runtime_put_noidle(&data->client->dev); + ret = pm_runtime_resume_and_get(&data->client->dev); + if (ret) return ret; - } return atlas_set_interrupt(data, true); } @@ -487,11 +485,9 @@ static int atlas_read_measurement(struct atlas_data *data, int reg, __be32 *val) int suspended = pm_runtime_suspended(dev); int ret; - ret = pm_runtime_get_sync(dev); - if (ret < 0) { - pm_runtime_put_noidle(dev); + ret = pm_runtime_resume_and_get(dev); + if (ret) return ret; - } if (suspended) msleep(data->chip->delay); @@ -741,7 +737,6 @@ static int atlas_remove(struct i2c_client *client) pm_runtime_disable(&client->dev); pm_runtime_set_suspended(&client->dev); - pm_runtime_put_noidle(&client->dev); return atlas_set_powermode(data, 0); } |