| Message ID | 20230712093322.37322-17-frank.li@vivo.com (mailing list archive) |
|---|---|
| State | Handled Elsewhere, archived |
| Headers | show |
| Series | [01/19] cpufreq: sun50i: Convert to platform remove callback returning void | expand |
On Wed, Jul 12, 2023 at 11:34 AM Yangtao Li <frank.li@vivo.com> wrote: > > 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. > > Cc: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> > Signed-off-by: Yangtao Li <frank.li@vivo.com> Acked-by: Rafael J. Wysocki <rafael@kernel.org> or please let me know if you want me to pick this up. Thanks! > --- > drivers/cpufreq/acpi-cpufreq.c | 6 ++---- > 1 file changed, 2 insertions(+), 4 deletions(-) > > diff --git a/drivers/cpufreq/acpi-cpufreq.c b/drivers/cpufreq/acpi-cpufreq.c > index b2f05d27167e..37f1cdf46d29 100644 > --- a/drivers/cpufreq/acpi-cpufreq.c > +++ b/drivers/cpufreq/acpi-cpufreq.c > @@ -1011,22 +1011,20 @@ static int __init acpi_cpufreq_probe(struct platform_device *pdev) > return ret; > } > > -static int acpi_cpufreq_remove(struct platform_device *pdev) > +static void acpi_cpufreq_remove(struct platform_device *pdev) > { > pr_debug("%s\n", __func__); > > cpufreq_unregister_driver(&acpi_cpufreq_driver); > > free_acpi_perf_data(); > - > - return 0; > } > > static struct platform_driver acpi_cpufreq_platdrv = { > .driver = { > .name = "acpi-cpufreq", > }, > - .remove = acpi_cpufreq_remove, > + .remove_new = acpi_cpufreq_remove, > }; > > static int __init acpi_cpufreq_init(void) > -- > 2.39.0 >
diff --git a/drivers/cpufreq/acpi-cpufreq.c b/drivers/cpufreq/acpi-cpufreq.c index b2f05d27167e..37f1cdf46d29 100644 --- a/drivers/cpufreq/acpi-cpufreq.c +++ b/drivers/cpufreq/acpi-cpufreq.c @@ -1011,22 +1011,20 @@ static int __init acpi_cpufreq_probe(struct platform_device *pdev) return ret; } -static int acpi_cpufreq_remove(struct platform_device *pdev) +static void acpi_cpufreq_remove(struct platform_device *pdev) { pr_debug("%s\n", __func__); cpufreq_unregister_driver(&acpi_cpufreq_driver); free_acpi_perf_data(); - - return 0; } static struct platform_driver acpi_cpufreq_platdrv = { .driver = { .name = "acpi-cpufreq", }, - .remove = acpi_cpufreq_remove, + .remove_new = acpi_cpufreq_remove, }; static int __init acpi_cpufreq_init(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. Cc: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Yangtao Li <frank.li@vivo.com> --- drivers/cpufreq/acpi-cpufreq.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-)