Re: [PATCH v2 4/4] driver core: platform: use generic driver_override infrastructure

["Danilo Krummrich" <dakr@kernel.org>]

(Cc: Bartosz)

On Tue Mar 3, 2026 at 12:53 PM CET, Danilo Krummrich wrote:
> diff --git a/arch/sh/drivers/platform_early.c b/arch/sh/drivers/platform_early.c
> index 143747c45206..3cd17bb0be67 100644
> --- a/arch/sh/drivers/platform_early.c
> +++ b/arch/sh/drivers/platform_early.c
> @@ -25,10 +25,12 @@ static int platform_match(struct device *dev, struct device_driver *drv)
>  {
>  	struct platform_device *pdev = to_platform_device(dev);
>  	struct platform_driver *pdrv = to_platform_driver(drv);
> +	int ret;
>  
>  	/* When driver_override is set, only bind to the matching driver */
> -	if (pdev->driver_override)
> -		return !strcmp(pdev->driver_override, drv->name);
> +	ret = device_match_driver_override(dev, drv);
> +	if (ret >= 0)
> +		return ret;
>  
>  	/* Then try to match against the id table */
>  	if (pdrv->id_table)

I was just about to pick up this series, but then noticed that checking for
driver_override in the platform_early case doesn't make sense in the first place
and was accidentally added when the platform_match() callback was copied over in
commit 507fd01d5333 ("drivers: move the early platform device support to
arch/sh").

Thus, I'm going to drop this hunk and add in the following patch; please let me
know if there are any concerns.

commit 39cae4095efda4b00b436c0fc46f21de84128969
Author: Danilo Krummrich <dakr@kernel.org>
Date:   Tue Mar 17 00:37:15 2026 +0100

    sh: platform_early: remove pdev->driver_override check

    In commit 507fd01d5333 ("drivers: move the early platform device support to
    arch/sh") platform_match() was copied over to the sh platform_early
    code, accidentally including the driver_override check.

    This check does not make sense for platform_early, as sysfs is not even
    available in first place at this point in the boot process, hence remove
    the check.

    Fixes: 507fd01d5333 ("drivers: move the early platform device support to arch/sh")
    Signed-off-by: Danilo Krummrich <dakr@kernel.org>

diff --git a/arch/sh/drivers/platform_early.c b/arch/sh/drivers/platform_early.c
index 143747c45206..48ddbc547bd9 100644
--- a/arch/sh/drivers/platform_early.c
+++ b/arch/sh/drivers/platform_early.c
@@ -26,10 +26,6 @@ static int platform_match(struct device *dev, struct device_driver *drv)
        struct platform_device *pdev = to_platform_device(dev);
        struct platform_driver *pdrv = to_platform_driver(drv);

-       /* When driver_override is set, only bind to the matching driver */
-       if (pdev->driver_override)
-               return !strcmp(pdev->driver_override, drv->name);
-
        /* Then try to match against the id table */
        if (pdrv->id_table)
                return platform_match_id(pdrv->id_table, pdev) != NULL;