On 03/21/2014 02:39 PM, Rob Herring wrote:
On Tue, Mar 18, 2014 at 4:56 PM, Pantelis Antoniou <pantelis.antoniou@xxxxxxxxxxxx> wrote:Add a runtime interface to using configfs for generic device tree overlay usage. A device-tree configfs entry is created in /config/device-tree/overlays To create an overlay you mkdir the directory and then echo the overlay firmware file to the path property file. # mkdir /config/device-tree/overlays/foo # echo foo.dtbo >/config/device-tree/overlays/foo/path
[...]
+static ssize_t cfs_overlay_item_status_show(struct cfs_overlay_item *overlay, + char *page) +{ + return sprintf(page, "%s\n", + overlay->applied ? "applied" : "unapplied"); +}This needs to be added to the above mentioned documentation along with any other files.
It is also terrible to grep for. Maybe just have the file named "applied" and use a bool instead? Sebastian
+ +CFS_OVERLAY_ITEM_ATTR(path, S_IRUGO | S_IWUSR, \ + cfs_overlay_item_path_show, cfs_overlay_item_path_store); +CFS_OVERLAY_ITEM_ATTR_RO(status, cfs_overlay_item_status_show); + +static struct configfs_attribute *cfs_overlay_attrs[] = { + &cfs_overlay_item_attr_path.attr, + &cfs_overlay_item_attr_status.attr, + NULL, +};
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