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Subject[RFC PATCH 7/7] watchdog: retu_wdt: Clean-up 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/watchdog/retu_wdt.c | 21 +++++----------------
1 file changed, 5 insertions(+), 16 deletions(-)

diff --git a/drivers/watchdog/retu_wdt.c b/drivers/watchdog/retu_wdt.c
index 258dfcf9cbda..3b65bdaf54b4 100644
--- a/drivers/watchdog/retu_wdt.c
+++ b/drivers/watchdog/retu_wdt.c
@@ -127,9 +127,12 @@ static int retu_wdt_probe(struct platform_device *pdev)
wdev->rdev = rdev;
wdev->dev = &pdev->dev;

- INIT_DELAYED_WORK(&wdev->ping_work, retu_wdt_ping_work);
+ ret = devm_delayed_work_autocancel(&pdev->dev, &wdev->ping_work,
+ retu_wdt_ping_work);
+ if (ret)
+ return ret;

- ret = watchdog_register_device(retu_wdt);
+ ret = devm_watchdog_register_device(&pdev->dev, retu_wdt);
if (ret < 0)
return ret;

@@ -138,25 +141,11 @@ static int retu_wdt_probe(struct platform_device *pdev)
else
retu_wdt_ping_enable(wdev);

- platform_set_drvdata(pdev, retu_wdt);
-
- return 0;
-}
-
-static int retu_wdt_remove(struct platform_device *pdev)
-{
- struct watchdog_device *wdog = platform_get_drvdata(pdev);
- struct retu_wdt_dev *wdev = watchdog_get_drvdata(wdog);
-
- watchdog_unregister_device(wdog);
- cancel_delayed_work_sync(&wdev->ping_work);
-
return 0;
}

static struct platform_driver retu_wdt_driver = {
.probe = retu_wdt_probe,
- .remove = retu_wdt_remove,
.driver = {
.name = "retu-wdt",
},
--
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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