usb: Remove usb_for_each_port()

There are no more users for the function.

Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://lore.kernel.org/r/20211223082432.45653-1-heikki.krogerus@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/usb/core/usb.c b/drivers/usb/core/usb.c
index 62368c4..2ce3667 100644 (file)
--- a/drivers/usb/core/usb.c
+++ b/drivers/usb/core/usb.c
@@ -398,52 +398,6 @@ int usb_for_each_dev(void *data, int (*fn)(struct usb_device *, void *))
 }
 EXPORT_SYMBOL_GPL(usb_for_each_dev);
 
-struct each_hub_arg {
-       void *data;
-       int (*fn)(struct device *, void *);
-};
-
-static int __each_hub(struct usb_device *hdev, void *data)
-{
-       struct each_hub_arg *arg = (struct each_hub_arg *)data;
-       struct usb_hub *hub;
-       int ret = 0;
-       int i;
-
-       hub = usb_hub_to_struct_hub(hdev);
-       if (!hub)
-               return 0;
-
-       mutex_lock(&usb_port_peer_mutex);
-
-       for (i = 0; i < hdev->maxchild; i++) {
-               ret = arg->fn(&hub->ports[i]->dev, arg->data);
-               if (ret)
-                       break;
-       }
-
-       mutex_unlock(&usb_port_peer_mutex);
-
-       return ret;
-}
-
-/**
- * usb_for_each_port - interate over all USB ports in the system
- * @data: data pointer that will be handed to the callback function
- * @fn: callback function to be called for each USB port
- *
- * Iterate over all USB ports and call @fn for each, passing it @data. If it
- * returns anything other than 0, we break the iteration prematurely and return
- * that value.
- */
-int usb_for_each_port(void *data, int (*fn)(struct device *, void *))
-{
-       struct each_hub_arg arg = {data, fn};
-
-       return usb_for_each_dev(&arg, __each_hub);
-}
-EXPORT_SYMBOL_GPL(usb_for_each_port);
-
 /**
  * usb_release_dev - free a usb device structure when all users of it are finished.
  * @dev: device that's been disconnected

diff --git a/include/linux/usb.h b/include/linux/usb.h
index 7ccaa76..200b7b7 100644 (file)
--- a/include/linux/usb.h
+++ b/include/linux/usb.h
@@ -875,15 +875,6 @@ extern struct usb_host_interface *usb_find_alt_setting(
                unsigned int iface_num,
                unsigned int alt_num);
 
-#if IS_REACHABLE(CONFIG_USB)
-int usb_for_each_port(void *data, int (*fn)(struct device *, void *));
-#else
-static inline int usb_for_each_port(void *data, int (*fn)(struct device *, void *))
-{
-       return 0;
-}
-#endif
-
 /* port claiming functions */
 int usb_hub_claim_port(struct usb_device *hdev, unsigned port1,
                struct usb_dev_state *owner);