Re: [PATCH 10/16] dax: Simplify root read-only definition for the 'resource' attribute

[Aneesh Kumar K.V]

Dan Williams <dan.j.williams@xxxxxxxxx> writes:

> Rather than update the permission in ->is_visible() set the permission
> directly at declaration time.
>
Reviewed-by: Aneesh Kumar K.V <aneesh.kumar@xxxxxxxxxxxxx>

> Cc: Ira Weiny <ira.weiny@xxxxxxxxx>
> Cc: Vishal Verma <vishal.l.verma@xxxxxxxxx>
> Signed-off-by: Dan Williams <dan.j.williams@xxxxxxxxx>
> ---
>  drivers/dax/bus.c |    4 +---
>  1 file changed, 1 insertion(+), 3 deletions(-)
>
> diff --git a/drivers/dax/bus.c b/drivers/dax/bus.c
> index f3e6e00ece40..ce6d648d7670 100644
> --- a/drivers/dax/bus.c
> +++ b/drivers/dax/bus.c
> @@ -309,7 +309,7 @@ static ssize_t resource_show(struct device *dev,
>  
>  	return sprintf(buf, "%#llx\n", dev_dax_resource(dev_dax));
>  }
> -static DEVICE_ATTR_RO(resource);
> +static DEVICE_ATTR(resource, 0400, resource_show, NULL);
>  
>  static ssize_t modalias_show(struct device *dev, struct device_attribute *attr,
>  		char *buf)
> @@ -329,8 +329,6 @@ static umode_t dev_dax_visible(struct kobject *kobj, struct attribute *a, int n)
>  
>  	if (a == &dev_attr_target_node.attr && dev_dax_target_node(dev_dax) < 0)
>  		return 0;
> -	if (a == &dev_attr_resource.attr)
> -		return 0400;
>  	return a->mode;
>  }
>