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, 15 insertions, 5 deletions

diff --git a/drivers/usb/renesas_usbhs/mod_gadget.c b/drivers/usb/renesas_usbhs/mod_gadget.c
index aa591b66383..c9c56e7a1b1 100644
--- a/drivers/usb/renesas_usbhs/mod_gadget.c
+++ b/drivers/usb/renesas_usbhs/mod_gadget.c
@@ -725,7 +725,7 @@ static int usbhsg_try_stop(struct usbhs_priv *priv, u32 status)
  *
  */
 struct usbhsg_gpriv *the_controller;
-int usb_gadget_probe_driver(struct usb_gadget_driver *driver,
+static int usbhsg_gadget_start(struct usb_gadget_driver *driver,
                             int (*bind)(struct usb_gadget *))
 {
         struct usbhsg_gpriv *gpriv = the_controller;
@@ -775,9 +775,8 @@ add_fail:
 
         return ret;
 }
-EXPORT_SYMBOL(usb_gadget_probe_driver);
 
-int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
+static int usbhsg_gadget_stop(struct usb_gadget_driver *driver)
 {
         struct usbhsg_gpriv *gpriv = the_controller;
         struct usbhs_priv *priv;
@@ -806,7 +805,6 @@ int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
 
         return 0;
 }
-EXPORT_SYMBOL(usb_gadget_unregister_driver);
 
 /*
  *              usb gadget ops
@@ -821,6 +819,8 @@ static int usbhsg_get_frame(struct usb_gadget *gadget)
 
 static struct usb_gadget_ops usbhsg_gadget_ops = {
         .get_frame              = usbhsg_get_frame,
+        .start                  = usbhsg_gadget_start,
+        .stop                   = usbhsg_gadget_stop,
 };
 
 static int usbhsg_start(struct usbhs_priv *priv)
@@ -840,6 +840,7 @@ int __devinit usbhs_mod_gadget_probe(struct usbhs_priv *priv)
         struct device *dev = usbhs_priv_to_dev(priv);
         int pipe_size = usbhs_get_dparam(priv, pipe_size);
         int i;
+        int ret;
 
         gpriv = kzalloc(sizeof(struct usbhsg_gpriv), GFP_KERNEL);
         if (!gpriv) {
@@ -850,6 +851,7 @@ int __devinit usbhs_mod_gadget_probe(struct usbhs_priv *priv)
         uep = kzalloc(sizeof(struct usbhsg_uep) * pipe_size, GFP_KERNEL);
         if (!uep) {
                 dev_err(dev, "Could not allocate ep\n");
+                ret = -ENOMEM;
                 goto usbhs_mod_gadget_probe_err_gpriv;
         }
 
@@ -911,20 +913,28 @@ int __devinit usbhs_mod_gadget_probe(struct usbhs_priv *priv)
 
         the_controller = gpriv;
 
+        ret = usb_add_gadget_udc(dev, &gpriv->gadget);
+        if (ret)
+                goto err_add_udc;
+
+
         dev_info(dev, "gadget probed\n");
 
         return 0;
+err_add_udc:
+        kfree(gpriv->uep);
 
 usbhs_mod_gadget_probe_err_gpriv:
         kfree(gpriv);
 
-        return -ENOMEM;
+        return ret;
 }
 
 void __devexit usbhs_mod_gadget_remove(struct usbhs_priv *priv)
 {
         struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
 
+        usb_del_gadget_udc(&gpriv->gadget);
         kfree(gpriv->uep);
         kfree(gpriv);
 }