diff mbox series

[04/19] cpufreq: vexpress: Convert to platform remove callback returning void

Message ID 20230712093322.37322-4-frank.li@vivo.com
State New
Headers
Series [01/19] cpufreq: sun50i: Convert to platform remove callback returning void |

Commit Message

李扬韬 July 12, 2023, 9:33 a.m. UTC 
  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/vexpress-spc-cpufreq.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

Comments

Sudeep Holla July 13, 2023, 1:04 p.m. UTC | #1 
On Wed, Jul 12, 2023 at 05:33:07PM +0800, Yangtao Li 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>

I assume either Viresh will pick this or you are planning to group all
similar changes and get it merged together. Either way,

Reviewed-by: Sudeep Holla <sudeep.holla@arm.com>
diff mbox series

Patch

diff --git a/drivers/cpufreq/vexpress-spc-cpufreq.c b/drivers/cpufreq/vexpress-spc-cpufreq.c
index d295f405c4bb..cf33e01dfda6 100644
--- a/drivers/cpufreq/vexpress-spc-cpufreq.c
+++ b/drivers/cpufreq/vexpress-spc-cpufreq.c
@@ -552,7 +552,7 @@  static int ve_spc_cpufreq_probe(struct platform_device *pdev)
 	return ret;
 }
 
-static int ve_spc_cpufreq_remove(struct platform_device *pdev)
+static void ve_spc_cpufreq_remove(struct platform_device *pdev)
 {
 	bL_switcher_get_enabled();
 	__bLs_unregister_notifier();
@@ -560,7 +560,6 @@  static int ve_spc_cpufreq_remove(struct platform_device *pdev)
 	bL_switcher_put_enabled();
 	pr_info("%s: Un-registered platform driver: %s\n", __func__,
 		ve_spc_cpufreq_driver.name);
-	return 0;
 }
 
 static struct platform_driver ve_spc_cpufreq_platdrv = {
@@ -568,7 +567,7 @@  static struct platform_driver ve_spc_cpufreq_platdrv = {
 		.name	= "vexpress-spc-cpufreq",
 	},
 	.probe		= ve_spc_cpufreq_probe,
-	.remove		= ve_spc_cpufreq_remove,
+	.remove_new	= ve_spc_cpufreq_remove,
 };
 module_platform_driver(ve_spc_cpufreq_platdrv);