Re: [Xen-devel] [PATCH 10/11] xenbus: convert bus code to use dev_groups

[Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>]

On 10/07/2013 02:55 AM, Greg Kroah-Hartman wrote:
> The dev_attrs field of struct bus_type is going away soon, dev_groups
> should be used instead.  This converts the xenbus code to use the
> correct field.
>
> Cc: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>
> Cc: Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>
> Cc: David Vrabel <david.vrabel@xxxxxxxxxx>
> Cc: <xen-devel@xxxxxxxxxxxxxxxxxxxx>
> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
> ---
>
> Konrad, I can take this through my driver-core tree if you like, just
> let me know what would be the easiest for you.
Konrad is likely out this (and possibly next) week but given that you
are taking a bunch of these patches it make sense that you take this one
as well.

(and just in case I gave it a quick test and it looked good).

-boris


>   drivers/xen/xenbus/xenbus_probe.c          | 24 ++++++++++++++++++------
>   drivers/xen/xenbus/xenbus_probe.h          |  2 +-
>   drivers/xen/xenbus/xenbus_probe_backend.c  |  2 +-
>   drivers/xen/xenbus/xenbus_probe_frontend.c |  2 +-
>   4 files changed, 21 insertions(+), 9 deletions(-)
>
> diff --git a/drivers/xen/xenbus/xenbus_probe.c 
> b/drivers/xen/xenbus/xenbus_probe.c
> index 38e92b7..3c0a74b 100644
> --- a/drivers/xen/xenbus/xenbus_probe.c
> +++ b/drivers/xen/xenbus/xenbus_probe.c
> @@ -384,12 +384,14 @@ static ssize_t nodename_show(struct device *dev,
>   {
>         return sprintf(buf, "%s\n", to_xenbus_device(dev)->nodename);
>   }
> +static DEVICE_ATTR_RO(nodename);
>   
>   static ssize_t devtype_show(struct device *dev,
>                             struct device_attribute *attr, char *buf)
>   {
>         return sprintf(buf, "%s\n", to_xenbus_device(dev)->devicetype);
>   }
> +static DEVICE_ATTR_RO(devtype);
>   
>   static ssize_t modalias_show(struct device *dev,
>                              struct device_attribute *attr, char *buf)
> @@ -397,14 +399,24 @@ static ssize_t modalias_show(struct device *dev,
>         return sprintf(buf, "%s:%s\n", dev->bus->name,
>                        to_xenbus_device(dev)->devicetype);
>   }
> +static DEVICE_ATTR_RO(modalias);
>   
> -struct device_attribute xenbus_dev_attrs[] = {
> -       __ATTR_RO(nodename),
> -       __ATTR_RO(devtype),
> -       __ATTR_RO(modalias),
> -       __ATTR_NULL
> +static struct attribute *xenbus_dev_attrs[] = {
> +       &dev_attr_nodename.attr,
> +       &dev_attr_devtype.attr,
> +       &dev_attr_modalias.attr,
> +       NULL,
>   };
> -EXPORT_SYMBOL_GPL(xenbus_dev_attrs);
> +
> +static const struct attribute_group xenbus_dev_group = {
> +       .attrs = xenbus_dev_attrs,
> +};
> +
> +const struct attribute_group *xenbus_dev_groups[] = {
> +       &xenbus_dev_group,
> +       NULL,
> +};
> +EXPORT_SYMBOL_GPL(xenbus_dev_groups);
>   
>   int xenbus_probe_node(struct xen_bus_type *bus,
>                       const char *type,
> diff --git a/drivers/xen/xenbus/xenbus_probe.h 
> b/drivers/xen/xenbus/xenbus_probe.h
> index 146f857..1085ec2 100644
> --- a/drivers/xen/xenbus/xenbus_probe.h
> +++ b/drivers/xen/xenbus/xenbus_probe.h
> @@ -54,7 +54,7 @@ enum xenstore_init {
>         XS_LOCAL,
>   };
>   
> -extern struct device_attribute xenbus_dev_attrs[];
> +extern const struct attribute_group *xenbus_dev_groups[];
>   
>   extern int xenbus_match(struct device *_dev, struct device_driver *_drv);
>   extern int xenbus_dev_probe(struct device *_dev);
> diff --git a/drivers/xen/xenbus/xenbus_probe_backend.c 
> b/drivers/xen/xenbus/xenbus_probe_backend.c
> index 998bbba..5125dce 100644
> --- a/drivers/xen/xenbus/xenbus_probe_backend.c
> +++ b/drivers/xen/xenbus/xenbus_probe_backend.c
> @@ -200,7 +200,7 @@ static struct xen_bus_type xenbus_backend = {
>                 .probe          = xenbus_dev_probe,
>                 .remove         = xenbus_dev_remove,
>                 .shutdown       = xenbus_dev_shutdown,
> -               .dev_attrs      = xenbus_dev_attrs,
> +               .dev_groups     = xenbus_dev_groups,
>         },
>   };
>   
> diff --git a/drivers/xen/xenbus/xenbus_probe_frontend.c b/drivers/xen/xenbus/xenbus_probe_frontend.c
> index 34b20bf..129bf84 100644
> --- a/drivers/xen/xenbus/xenbus_probe_frontend.c
> +++ b/drivers/xen/xenbus/xenbus_probe_frontend.c
> @@ -154,7 +154,7 @@ static struct xen_bus_type xenbus_frontend = {
>                 .probe          = xenbus_frontend_dev_probe,
>                 .remove         = xenbus_dev_remove,
>                 .shutdown       = xenbus_dev_shutdown,
> -               .dev_attrs      = xenbus_dev_attrs,
> +               .dev_groups     = xenbus_dev_groups,
>   
>   		.pm		= &xenbus_pm_ops,
>         },

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