xen: modify xenstore watch event interface

Today a Xenstore watch event is delivered via a callback function
declared as:

void (*callback)(struct xenbus_watch *,
                 const char **vec, unsigned int len);

As all watch events only ever come with two parameters (path and token)
changing the prototype to:

void (*callback)(struct xenbus_watch *,
                 const char *path, const char *token);

is the natural thing to do.

Apply this change and adapt all users.

Cc: konrad.wilk@oracle.com
Cc: roger.pau@citrix.com
Cc: wei.liu2@citrix.com
Cc: paul.durrant@citrix.com
Cc: netdev@vger.kernel.org

Signed-off-by: Juergen Gross <jgross@suse.com>
Reviewed-by: Paul Durrant <paul.durrant@citrix.com>
Reviewed-by: Wei Liu <wei.liu2@citrix.com>
Reviewed-by: Roger Pau Monné <roger.pau@citrix.com>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>

1 files changed, 3 insertions, 3 deletions

diff --git a/drivers/xen/xenbus/xenbus.h b/drivers/xen/xenbus/xenbus.h
index a6b007dfdaa8..51995276f549 100644
--- a/drivers/xen/xenbus/xenbus.h
+++ b/drivers/xen/xenbus/xenbus.h
@@ -40,8 +40,8 @@ struct xen_bus_type {
 	int (*get_bus_id)(char bus_id[XEN_BUS_ID_SIZE], const char *nodename);
 	int (*probe)(struct xen_bus_type *bus, const char *type,
 		     const char *dir);
-	void (*otherend_changed)(struct xenbus_watch *watch, const char **vec,
-				 unsigned int len);
+	void (*otherend_changed)(struct xenbus_watch *watch, const char *path,
+				 const char *token);
 	struct bus_type bus;
 };
 
@@ -84,7 +84,7 @@ int xenbus_dev_resume(struct device *dev);
 int xenbus_dev_cancel(struct device *dev);
 
 void xenbus_otherend_changed(struct xenbus_watch *watch,
-			     const char **vec, unsigned int len,
+			     const char *path, const char *token,
 			     int ignore_on_shutdown);
 
 int xenbus_read_otherend_details(struct xenbus_device *xendev,