usb: gadget: convert all users to the new udc infrastructure

peripheral drivers are using usb_add_gadget()/usb_del_gadget() to
register/unregister to the udc-core.

The udc-core will take the first available gadget driver and attach
function driver which is calling usb_gadget_register_driver(). This is
the same behaviour we have right now.

Only dummy_hcd was tested, the others were compiled tested.

Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: Anton Tikhomirov <av.tikhomirov@samsung.com>
Cc: Ben Dooks <ben-linux@fluff.org>
Cc: Dan Carpenter <error27@gmail.com>
Cc: Darius Augulis <augulis.darius@gmail.com>
Cc: Eric Miao <eric.y.miao@gmail.com>
Cc: Jingoo Han <jg1.han@samsung.com>
Cc: Kukjin Kim <kgene.kim@samsung.com>
Cc: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Cc: Li Yang <leoli@freescale.com>
Cc: Michael Hennerich <michael.hennerich@analog.com>
Acked-by: Mike Frysinger <vapier@gentoo.org>
Cc: Nicolas Ferre <nicolas.ferre@atmel.com>
Cc: Pavankumar Kondeti <pkondeti@codeaurora.org>
Cc: Roy Huang <roy.huang@analog.com>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Toshiharu Okada <toshiharu-linux@dsn.okisemi.com>
Cc: Xiaochen Shen <xiaochen.shen@intel.com>
Cc: Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com>
Cc: Yuan-Hsin Chen <yhchen@faraday-tech.com>
Cc: cxie4 <cxie4@marvell.com>
Cc: linux-geode@lists.infradead.org
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 17 insertions, 5 deletions

diff --git a/drivers/usb/gadget/net2272.c b/drivers/usb/gadget/net2272.c
index 29151c44f476..7f1219e239a3 100644
--- a/drivers/usb/gadget/net2272.c
+++ b/drivers/usb/gadget/net2272.c
@@ -1172,11 +1172,17 @@ net2272_pullup(struct usb_gadget *_gadget, int is_on)
         return 0;
 }
 
+static int net2272_start(struct usb_gadget_driver *driver,
+                int (*bind)(struct usb_gadget *));
+static int net2272_stop(struct usb_gadget_driver *driver);
+
 static const struct usb_gadget_ops net2272_ops = {
         .get_frame       = net2272_get_frame,
         .wakeup          = net2272_wakeup,
         .set_selfpowered = net2272_set_selfpowered,
-        .pullup          = net2272_pullup
+        .pullup                 = net2272_pullup,
+        .start                  = net2272_start,
+        .stop                   = net2272_stop,
 };
 
 /*---------------------------------------------------------------------------*/
@@ -1447,7 +1453,7 @@ net2272_ep0_start(struct net2272 *dev)
  * disconnect is reported.  then a host may connect again, or
  * the driver might get unbound.
  */
-int usb_gadget_probe_driver(struct usb_gadget_driver *driver,
+static int net2272_start(struct usb_gadget_driver *driver,
         int (*bind)(struct usb_gadget *))
 {
         struct net2272 *dev = the_controller;
@@ -1487,7 +1493,6 @@ int usb_gadget_probe_driver(struct usb_gadget_driver *driver,
 
         return 0;
 }
-EXPORT_SYMBOL(usb_gadget_probe_driver);
 
 static void
 stop_activity(struct net2272 *dev, struct usb_gadget_driver *driver)
@@ -1515,7 +1520,7 @@ stop_activity(struct net2272 *dev, struct usb_gadget_driver *driver)
         net2272_usb_reinit(dev);
 }
 
-int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
+static int net2272_stop(struct usb_gadget_driver *driver)
 {
         struct net2272 *dev = the_controller;
         unsigned long flags;
@@ -1538,7 +1543,6 @@ int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
         dev_dbg(dev->dev, "unregistered driver '%s'\n", driver->driver.name);
         return 0;
 }
-EXPORT_SYMBOL(usb_gadget_unregister_driver);
 
 /*---------------------------------------------------------------------------*/
 /* handle ep-a/ep-b dma completions */
@@ -2217,6 +2221,8 @@ net2272_gadget_release(struct device *_dev)
 static void __devexit
 net2272_remove(struct net2272 *dev)
 {
+        usb_del_gadget_udc(&dev->gadget);
+
         /* start with the driver above us */
         if (dev->driver) {
                 /* should have been done already by driver model core */
@@ -2310,8 +2316,14 @@ net2272_probe_fin(struct net2272 *dev, unsigned int irqflags)
         if (ret)
                 goto err_dev_reg;
 
+        ret = usb_add_gadget_udc(dev->dev, &dev->gadget);
+        if (ret)
+                goto err_add_udc;
+
         return 0;
 
+err_add_udc:
+        device_remove_file(dev->dev, &dev_attr_registers);
  err_dev_reg:
         device_unregister(&dev->gadget.dev);
  err_irq: