[XENBUS] A few cleanups.

  * move function prototypes to the top of the file.
  * uses the "struct bus_type" function pointers instead
    of overwriting the "struct device_driver" ones for
    xenbus_dev_probe() and xenbus_dev_remove().

Signed-off-by: Gerd Hoffmann <kraxel@suse.de>

diff --git a/linux-2.6-xen-sparse/drivers/xen/xenbus/xenbus_probe.c b/linux-2.6-xen-sparse/drivers/xen/xenbus/xenbus_probe.c
index a508e76461ff88dc9d077987c593b6a839a24282..dc48ad09321a757eaa11bb2d6cadbc0b2156948e 100644 (file)
--- a/linux-2.6-xen-sparse/drivers/xen/xenbus/xenbus_probe.c
+++ b/linux-2.6-xen-sparse/drivers/xen/xenbus/xenbus_probe.c
@@ -66,6 +66,14 @@ static struct notifier_block *xenstore_chain;
 
 static void wait_for_devices(struct xenbus_driver *xendrv);
 
+static int xenbus_probe_frontend(const char *type, const char *name);
+static int xenbus_uevent_backend(struct device *dev, char **envp,
+                                int num_envp, char *buffer, int buffer_size);
+static int xenbus_probe_backend(const char *type, const char *domid);
+
+static int xenbus_dev_probe(struct device *_dev);
+static int xenbus_dev_remove(struct device *_dev);
+
 /* If something in array of ids matches this device, return it. */
 static const struct xenbus_device_id *
 match_device(const struct xenbus_device_id *arr, struct xenbus_device *dev)
@@ -174,15 +182,16 @@ static int read_frontend_details(struct xenbus_device *xendev)
 
 
 /* Bus type for frontend drivers. */
-static int xenbus_probe_frontend(const char *type, const char *name);
 static struct xen_bus_type xenbus_frontend = {
        .root = "device",
        .levels = 2,            /* device/type/<id> */
        .get_bus_id = frontend_bus_id,
        .probe = xenbus_probe_frontend,
        .bus = {
-               .name  = "xen",
-               .match = xenbus_match,
+               .name     = "xen",
+               .match    = xenbus_match,
+               .probe    = xenbus_dev_probe,
+               .remove   = xenbus_dev_remove,
        },
        .dev = {
                .bus_id = "xen",
@@ -227,18 +236,17 @@ static int backend_bus_id(char bus_id[BUS_ID_SIZE], const char *nodename)
        return 0;
 }
 
-static int xenbus_uevent_backend(struct device *dev, char **envp,
-                                int num_envp, char *buffer, int buffer_size);
-static int xenbus_probe_backend(const char *type, const char *domid);
 static struct xen_bus_type xenbus_backend = {
        .root = "backend",
        .levels = 3,            /* backend/type/<frontend>/<id> */
        .get_bus_id = backend_bus_id,
        .probe = xenbus_probe_backend,
        .bus = {
-               .name  = "xen-backend",
-               .match = xenbus_match,
-               .uevent = xenbus_uevent_backend,
+               .name     = "xen-backend",
+               .match    = xenbus_match,
+               .probe    = xenbus_dev_probe,
+               .remove   = xenbus_dev_remove,
+               .uevent   = xenbus_uevent_backend,
        },
        .dev = {
                .bus_id = "xen-backend",
@@ -405,8 +413,6 @@ static int xenbus_register_driver_common(struct xenbus_driver *drv,
        drv->driver.name = drv->name;
        drv->driver.bus = &bus->bus;
        drv->driver.owner = drv->owner;
-       drv->driver.probe = xenbus_dev_probe;
-       drv->driver.remove = xenbus_dev_remove;
 
        mutex_lock(&xenwatch_mutex);
        ret = driver_register(&drv->driver);