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authorUwe Kleine-König <u.kleine-koenig@pengutronix.de>2023-03-03 22:37:05 +0100
committerWim Van Sebroeck <wim@linux-watchdog.org>2023-04-22 12:53:49 +0200
commit6645579b7081753e4f94946a2c98f5d4aeed9c9c (patch)
tree2184d1e9da1044d33cf21655174fe89119fea1b3 /drivers/watchdog
parentc550440918fff34f5098f8165ffb227afde6bf33 (diff)
downloadlwn-6645579b7081753e4f94946a2c98f5d4aeed9c9c.tar.gz
lwn-6645579b7081753e4f94946a2c98f5d4aeed9c9c.zip
watchdog: rdc321x: Convert to platform remove callback returning void
The .remove() callback for a platform driver returns an int which makes many driver authors wrongly assume it's possible to do error handling by returning an error code. However the value returned is (mostly) ignored and this typically results in resource leaks. To improve here there is a quest to make the remove callback return void. In the first step of this quest all drivers are converted to .remove_new() which already returns void. Trivially convert this driver from always returning zero in the remove callback to the void returning variant. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Link: https://lore.kernel.org/r/20230303213716.2123717-24-u.kleine-koenig@pengutronix.de Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
Diffstat (limited to 'drivers/watchdog')
-rw-r--r--drivers/watchdog/rdc321x_wdt.c6
1 files changed, 2 insertions, 4 deletions
diff --git a/drivers/watchdog/rdc321x_wdt.c b/drivers/watchdog/rdc321x_wdt.c
index f0c94ea51c3e..6176f4343fc5 100644
--- a/drivers/watchdog/rdc321x_wdt.c
+++ b/drivers/watchdog/rdc321x_wdt.c
@@ -257,7 +257,7 @@ static int rdc321x_wdt_probe(struct platform_device *pdev)
return 0;
}
-static int rdc321x_wdt_remove(struct platform_device *pdev)
+static void rdc321x_wdt_remove(struct platform_device *pdev)
{
if (rdc321x_wdt_device.queue) {
rdc321x_wdt_device.queue = 0;
@@ -265,13 +265,11 @@ static int rdc321x_wdt_remove(struct platform_device *pdev)
}
misc_deregister(&rdc321x_wdt_misc);
-
- return 0;
}
static struct platform_driver rdc321x_wdt_driver = {
.probe = rdc321x_wdt_probe,
- .remove = rdc321x_wdt_remove,
+ .remove_new = rdc321x_wdt_remove,
.driver = {
.name = "rdc321x-wdt",
},