diff mbox series

[14/58] mmc: dw_mmc: exynos: Convert to platform remove callback returning void

Message ID 20230713080807.69999-14-frank.li@vivo.com
State New
Headers
Series [01/58] mmc: sunxi: Convert to platform remove callback returning void |

Commit Message

李扬韬 July 13, 2023, 8:07 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/mmc/host/dw_mmc-exynos.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

Comments

Uwe Kleine-König July 13, 2023, 9:02 a.m. UTC | #1 
On Thu, Jul 13, 2023 at 10:11:15AM +0200, Krzysztof Kozlowski wrote:
> On 13/07/2023 10:07, 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.
> 
> You even copied Uwe's commit msg... Aren't you duplicate his work or is
> it being coordinated?

We communicated and I politely asked to not interfer. This series is
just what Yangtao had still pending. That's fine for me.

Thanks for noticing,
Uwe
diff mbox series

Patch

diff --git a/drivers/mmc/host/dw_mmc-exynos.c b/drivers/mmc/host/dw_mmc-exynos.c
index 9f20ac524c8b..698408e8bad0 100644
--- a/drivers/mmc/host/dw_mmc-exynos.c
+++ b/drivers/mmc/host/dw_mmc-exynos.c
@@ -664,15 +664,13 @@  static int dw_mci_exynos_probe(struct platform_device *pdev)
 	return 0;
 }
 
-static int dw_mci_exynos_remove(struct platform_device *pdev)
+static void dw_mci_exynos_remove(struct platform_device *pdev)
 {
 	pm_runtime_disable(&pdev->dev);
 	pm_runtime_set_suspended(&pdev->dev);
 	pm_runtime_put_noidle(&pdev->dev);
 
 	dw_mci_pltfm_remove(pdev);
-
-	return 0;
 }
 
 static const struct dev_pm_ops dw_mci_exynos_pmops = {
@@ -685,7 +683,7 @@  static const struct dev_pm_ops dw_mci_exynos_pmops = {
 
 static struct platform_driver dw_mci_exynos_pltfm_driver = {
 	.probe		= dw_mci_exynos_probe,
-	.remove		= dw_mci_exynos_remove,
+	.remove_new	= dw_mci_exynos_remove,
 	.driver		= {
 		.name		= "dwmmc_exynos",
 		.probe_type	= PROBE_PREFER_ASYNCHRONOUS,