Re: [Xen-devel] [PATCH 3/9] drm/xen-front: Read driver configuration from Xen store

[Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>]

On 02/21/2018 03:03 AM, Oleksandr Andrushchenko wrote:
> +
> +static int cfg_connector(struct xen_drm_front_info *front_info,
> +             struct xen_drm_front_cfg_connector *connector,
> +             const char *path, int index)
> +{
> +     char *connector_path;
> +
> +     connector_path = devm_kasprintf(&front_info->xb_dev->dev,
> +                     GFP_KERNEL, "%s/%d", path, index);
> +     if (!connector_path)
> +             return -ENOMEM;
> +
> +     connector->xenstore_path = connector_path;
> +     if (xenbus_scanf(XBT_NIL, connector_path, XENDISPL_FIELD_RESOLUTION,
> +                     "%d" XENDISPL_RESOLUTION_SEPARATOR "%d",
> +                     &connector->width, &connector->height) < 0) {
> +             /* either no entry configured or wrong resolution set */
> +             connector->width = 0;
> +             connector->height = 0;

Do you also need to set connector->xenstore_path to NULL? Or maybe just
set it after xenbus_scanf() call.

-boris




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