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misc: vcpu_stall_detector: Convert to platform remove callback returning void

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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 ignored (apart
from emitting a warning) 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. Eventually after all drivers
are converted, .remove_new() will be renamed to .remove().

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>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/r/4b964bd133f5af11cabd51a4d8ed95025583eb93.1708508896.git.u.kleine-koenig@pengutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Uwe Kleine-König 2024-02-21 10:53:53 +01:00 committed by Greg Kroah-Hartman
parent f1a70d68e5
commit be7e1a4c47
1 changed files with 2 additions and 4 deletions
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6
drivers/misc/vcpu_stall_detector.c
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@ -187,7 +187,7 @@ err:
return ret; return ret;
} }
static int vcpu_stall_detect_remove(struct platform_device *pdev) static void vcpu_stall_detect_remove(struct platform_device *pdev)
{ {
int cpu; int cpu;
@ -195,8 +195,6 @@ static int vcpu_stall_detect_remove(struct platform_device *pdev)
for_each_possible_cpu(cpu) for_each_possible_cpu(cpu)
stop_stall_detector_cpu(cpu); stop_stall_detector_cpu(cpu);
return 0;
} }
static const struct of_device_id vcpu_stall_detect_of_match[] = { static const struct of_device_id vcpu_stall_detect_of_match[] = {
@ -208,7 +206,7 @@ MODULE_DEVICE_TABLE(of, vcpu_stall_detect_of_match);
static struct platform_driver vcpu_stall_detect_driver = { static struct platform_driver vcpu_stall_detect_driver = {
.probe = vcpu_stall_detect_probe, .probe = vcpu_stall_detect_probe,
.remove = vcpu_stall_detect_remove, .remove_new = vcpu_stall_detect_remove,
.driver = { .driver = {
.name = KBUILD_MODNAME, .name = KBUILD_MODNAME,
.of_match_table = vcpu_stall_detect_of_match, .of_match_table = vcpu_stall_detect_of_match,