diff mbox series

[40/58] mmc: sdhci-msm: Convert to platform remove callback returning void

Message ID 20230713080807.69999-40-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/sdhci-msm.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

Comments

Konrad Dybcio July 13, 2023, 8:44 a.m. UTC | #1 
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.
> 
> Cc: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
> Signed-off-by: Yangtao Li <frank.li@vivo.com>
> ---
Acked-by: Konrad Dybcio <konrad.dybcio@linaro.org>

Konrad

>  drivers/mmc/host/sdhci-msm.c | 5 ++---
>  1 file changed, 2 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/mmc/host/sdhci-msm.c b/drivers/mmc/host/sdhci-msm.c
> index 1c935b5bafe1..80e376802ee0 100644
> --- a/drivers/mmc/host/sdhci-msm.c
> +++ b/drivers/mmc/host/sdhci-msm.c
> @@ -2668,7 +2668,7 @@ static int sdhci_msm_probe(struct platform_device *pdev)
>  	return ret;
>  }
>  
> -static int sdhci_msm_remove(struct platform_device *pdev)
> +static void sdhci_msm_remove(struct platform_device *pdev)
>  {
>  	struct sdhci_host *host = platform_get_drvdata(pdev);
>  	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
> @@ -2687,7 +2687,6 @@ static int sdhci_msm_remove(struct platform_device *pdev)
>  	if (!IS_ERR(msm_host->bus_clk))
>  		clk_disable_unprepare(msm_host->bus_clk);
>  	sdhci_pltfm_free(pdev);
> -	return 0;
>  }
>  
>  static __maybe_unused int sdhci_msm_runtime_suspend(struct device *dev)
> @@ -2740,7 +2739,7 @@ static const struct dev_pm_ops sdhci_msm_pm_ops = {
>  
>  static struct platform_driver sdhci_msm_driver = {
>  	.probe = sdhci_msm_probe,
> -	.remove = sdhci_msm_remove,
> +	.remove_new = sdhci_msm_remove,
>  	.driver = {
>  		   .name = "sdhci_msm",
>  		   .of_match_table = sdhci_msm_dt_match,
diff mbox series

Patch

diff --git a/drivers/mmc/host/sdhci-msm.c b/drivers/mmc/host/sdhci-msm.c
index 1c935b5bafe1..80e376802ee0 100644
--- a/drivers/mmc/host/sdhci-msm.c
+++ b/drivers/mmc/host/sdhci-msm.c
@@ -2668,7 +2668,7 @@  static int sdhci_msm_probe(struct platform_device *pdev)
 	return ret;
 }
 
-static int sdhci_msm_remove(struct platform_device *pdev)
+static void sdhci_msm_remove(struct platform_device *pdev)
 {
 	struct sdhci_host *host = platform_get_drvdata(pdev);
 	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
@@ -2687,7 +2687,6 @@  static int sdhci_msm_remove(struct platform_device *pdev)
 	if (!IS_ERR(msm_host->bus_clk))
 		clk_disable_unprepare(msm_host->bus_clk);
 	sdhci_pltfm_free(pdev);
-	return 0;
 }
 
 static __maybe_unused int sdhci_msm_runtime_suspend(struct device *dev)
@@ -2740,7 +2739,7 @@  static const struct dev_pm_ops sdhci_msm_pm_ops = {
 
 static struct platform_driver sdhci_msm_driver = {
 	.probe = sdhci_msm_probe,
-	.remove = sdhci_msm_remove,
+	.remove_new = sdhci_msm_remove,
 	.driver = {
 		   .name = "sdhci_msm",
 		   .of_match_table = sdhci_msm_dt_match,