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Subject[RFC PATCH 3/7] hwmon: raspberry-pi: Clean-up few drivers by using managed work init
Few drivers implement remove call-back only for ensuring a delayed
work gets cancelled prior driver removal. Clean-up these by switching
to use devm_delayed_work_autocancel() instead.

This change is compile-tested only. All testing is appreciated.

Signed-off-by: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
---
drivers/hwmon/raspberrypi-hwmon.c | 16 +++++-----------
1 file changed, 5 insertions(+), 11 deletions(-)

diff --git a/drivers/hwmon/raspberrypi-hwmon.c b/drivers/hwmon/raspberrypi-hwmon.c
index d3a64a35f7a9..acfa674932bc 100644
--- a/drivers/hwmon/raspberrypi-hwmon.c
+++ b/drivers/hwmon/raspberrypi-hwmon.c
@@ -106,6 +106,7 @@ static int rpi_hwmon_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct rpi_hwmon_data *data;
+ int ret;

data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
if (!data)
@@ -119,7 +120,10 @@ static int rpi_hwmon_probe(struct platform_device *pdev)
&rpi_chip_info,
NULL);

- INIT_DELAYED_WORK(&data->get_values_poll_work, get_values_poll);
+ ret = devm_delayed_work_autocancel(dev, &data->get_values_poll_work,
+ get_values_poll);
+ if (ret)
+ return ret;
platform_set_drvdata(pdev, data);

if (!PTR_ERR_OR_ZERO(data->hwmon_dev))
@@ -128,18 +132,8 @@ static int rpi_hwmon_probe(struct platform_device *pdev)
return PTR_ERR_OR_ZERO(data->hwmon_dev);
}

-static int rpi_hwmon_remove(struct platform_device *pdev)
-{
- struct rpi_hwmon_data *data = platform_get_drvdata(pdev);
-
- cancel_delayed_work_sync(&data->get_values_poll_work);
-
- return 0;
-}
-
static struct platform_driver rpi_hwmon_driver = {
.probe = rpi_hwmon_probe,
- .remove = rpi_hwmon_remove,
.driver = {
.name = "raspberrypi-hwmon",
},
--
2.25.4

--
Matti Vaittinen, Linux device drivers
ROHM Semiconductors, Finland SWDC
Kiviharjunlenkki 1E
90220 OULU
FINLAND

~~~ "I don't think so," said Rene Descartes. Just then he vanished ~~~
Simon says - in Latin please.
~~~ "non cogito me" dixit Rene Descarte, deinde evanescavit ~~~
Thanks to Simon Glass for the translation =]

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