Re: [PATCH] mmc: sdhci-of-aspeed: depopulate slots before disabling clock

[Adrian Hunter <adrian.hunter@intel.com>]

On 16/06/2026 03:49, Pengpeng Hou wrote:
> aspeed_sdc_probe() creates child slot devices one by one after enabling
> the controller clock.  If a later slot creation fails, the already-created
> slot devices remain registered while the parent probe returns an error.
> 
> Depopulate any created slot devices on probe failure and during remove,
> before disabling the shared controller clock used by the slots.
> 
> Signed-off-by: Pengpeng Hou <pengpeng@iscas.ac.cn>
> ---
>  drivers/mmc/host/sdhci-of-aspeed.c | 5 ++++-
>  1 file changed, 4 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/mmc/host/sdhci-of-aspeed.c b/drivers/mmc/host/sdhci-of-aspeed.c
> index f5d973783cbe..3e941b176687 100644
> --- a/drivers/mmc/host/sdhci-of-aspeed.c
> +++ b/drivers/mmc/host/sdhci-of-aspeed.c
> @@ -560,12 +560,14 @@ static int aspeed_sdc_probe(struct platform_device *pdev)
>  		cpdev = of_platform_device_create(child, NULL, &pdev->dev);
>  		if (!cpdev) {
>  			ret = -ENODEV;
> -			goto err_clk;
> +			goto err_depopulate;
>  		}
>  	}
>  
>  	return 0;
>  
> +err_depopulate:
> +	of_platform_depopulate(&pdev->dev);

of_platform_depopulate() does not appear to work with
of_platform_device_create() due to the OF_POPULATED_BUS flag

>  err_clk:
>  	clk_disable_unprepare(sdc->clk);
>  	return ret;
> @@ -575,6 +577,7 @@ static void aspeed_sdc_remove(struct platform_device *pdev)
>  {
>  	struct aspeed_sdc *sdc = dev_get_drvdata(&pdev->dev);
>  
> +	of_platform_depopulate(&pdev->dev);
>  	clk_disable_unprepare(sdc->clk);
>  }
>  

There is another existing issue that Sashiko noticed:

struct platform_driver aspeed_sdc_driver has:
	.pm	= &sdhci_pltfm_pmops,

where it won't work correctly.  It looks like it
should have instead been in:

struct platform_driver aspeed_sdhci_driver

Refer:
	https://sashiko.dev/#/patchset/20260616004953.3469-1-pengpeng%40iscas.ac.cn