Re: [PATCH 17/36] sh: intc: move to use bus_get_dev_root()

[John Paul Adrian Glaubitz]

On Mon, 2023-03-13 at 19:28 +0100, Greg Kroah-Hartman wrote:
> Direct access to the struct bus_type dev_root pointer is going away soon
> so replace that with a call to bus_get_dev_root() instead, which is what
> it is there for.
> 
> Cc: Yoshinori Sato <ysato@xxxxxxxxxxxxxxxxxxxx>
> Cc: Rich Felker <dalias@xxxxxxxx>
> Cc: linux-sh@xxxxxxxxxxxxxxx
> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
> ---
> Note, this is a patch that is a prepatory cleanup as part of a larger
> series of patches that is working on resolving some old driver core
> design mistakes.  It will build and apply cleanly on top of 6.3-rc2 on
> its own, but I'd prefer if I could take it through my driver-core tree
> so that the driver core changes can be taken through there for 6.4-rc1.
> 
>  drivers/sh/intc/userimask.c | 10 +++++++++-
>  1 file changed, 9 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/sh/intc/userimask.c b/drivers/sh/intc/userimask.c
> index f9f043a3d90a..abe9091827cd 100644
> --- a/drivers/sh/intc/userimask.c
> +++ b/drivers/sh/intc/userimask.c
> @@ -61,10 +61,18 @@ static DEVICE_ATTR(userimask, S_IRUSR | S_IWUSR,
>  
>  static int __init userimask_sysdev_init(void)
>  {
> +	struct device *dev_root;
> +	int ret = 0;
> +
>  	if (unlikely(!uimask))
>  		return -ENXIO;
>  
> -	return device_create_file(intc_subsys.dev_root, &dev_attr_userimask);
> +	dev_root = bus_get_dev_root(&intc_subsys);
> +	if (dev_root) {
> +		ret = device_create_file(dev_root, &dev_attr_userimask);
> +		put_device(dev_root);
> +	}
> +	return ret;
>  }
>  late_initcall(userimask_sysdev_init);
>  

Acked-by: John Paul Adrian Glaubitz <glaubitz@xxxxxxxxxxxxxxxxxxx>

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