usb: gadget: s3c-hsudc: use udc_start and udc_stop functions

udc_start and udc_stop reduce code duplication in comparison to
start and stop generalising calls done by all drivers
(i.e. bind and unbind) and moving these calls to common code.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>

diff --git a/drivers/usb/gadget/s3c-hsudc.c b/drivers/usb/gadget/s3c-hsudc.c
index fd18132..1de9550 100644 (file)
--- a/drivers/usb/gadget/s3c-hsudc.c
+++ b/drivers/usb/gadget/s3c-hsudc.c
@@ -282,8 +282,7 @@ static void s3c_hsudc_nuke_ep(struct s3c_hsudc_ep *hsep, int status)
  * All the endpoints are stopped and any pending transfer requests if any on
  * the endpoint are terminated.
  */
-static void s3c_hsudc_stop_activity(struct s3c_hsudc *hsudc,
-                         struct usb_gadget_driver *driver)
+static void s3c_hsudc_stop_activity(struct s3c_hsudc *hsudc)
 {
        struct s3c_hsudc_ep *hsep;
        int epnum;
@@ -295,10 +294,6 @@ static void s3c_hsudc_stop_activity(struct s3c_hsudc *hsudc,
                hsep->stopped = 1;
                s3c_hsudc_nuke_ep(hsep, -ESHUTDOWN);
        }
-
-       spin_unlock(&hsudc->lock);
-       driver->disconnect(&hsudc->gadget);
-       spin_lock(&hsudc->lock);
 }
 
 /**
@@ -1135,16 +1130,15 @@ static irqreturn_t s3c_hsudc_irq(int irq, void *_dev)
        return IRQ_HANDLED;
 }
 
-static int s3c_hsudc_start(struct usb_gadget_driver *driver,
-               int (*bind)(struct usb_gadget *))
+static int s3c_hsudc_start(struct usb_gadget *gadget,
+               struct usb_gadget_driver *driver)
 {
        struct s3c_hsudc *hsudc = the_controller;
        int ret;
 
        if (!driver
                || driver->max_speed < USB_SPEED_FULL
-               || !bind
-               || !driver->unbind || !driver->disconnect || !driver->setup)
+               || !driver->setup)
                return -EINVAL;
 
        if (!hsudc)
@@ -1155,17 +1149,6 @@ static int s3c_hsudc_start(struct usb_gadget_driver *driver,
 
        hsudc->driver = driver;
        hsudc->gadget.dev.driver = &driver->driver;
-       hsudc->gadget.speed = USB_SPEED_UNKNOWN;
-
-       ret = bind(&hsudc->gadget);
-       if (ret) {
-               dev_err(hsudc->dev, "%s: bind failed\n", hsudc->gadget.name);
-               device_del(&hsudc->gadget.dev);
-
-               hsudc->driver = NULL;
-               hsudc->gadget.dev.driver = NULL;
-               return ret;
-       }
 
        /* connect to bus through transceiver */
        if (hsudc->transceiver) {
@@ -1173,8 +1156,6 @@ static int s3c_hsudc_start(struct usb_gadget_driver *driver,
                if (ret) {
                        dev_err(hsudc->dev, "%s: can't bind to transceiver\n",
                                        hsudc->gadget.name);
-                       driver->unbind(&hsudc->gadget);
-
                        hsudc->driver = NULL;
                        hsudc->gadget.dev.driver = NULL;
                        return ret;
@@ -1192,7 +1173,8 @@ static int s3c_hsudc_start(struct usb_gadget_driver *driver,
        return 0;
 }
 
-static int s3c_hsudc_stop(struct usb_gadget_driver *driver)
+static int s3c_hsudc_stop(struct usb_gadget *gadget,
+               struct usb_gadget_driver *driver)
 {
        struct s3c_hsudc *hsudc = the_controller;
        unsigned long flags;
@@ -1200,21 +1182,22 @@ static int s3c_hsudc_stop(struct usb_gadget_driver *driver)
        if (!hsudc)
                return -ENODEV;
 
-       if (!driver || driver != hsudc->driver || !driver->unbind)
+       if (!driver || driver != hsudc->driver)
                return -EINVAL;
 
        spin_lock_irqsave(&hsudc->lock, flags);
-       hsudc->driver = 0;
+       hsudc->driver = NULL;
+       hsudc->gadget.dev.driver = NULL;
+       hsudc->gadget.speed = USB_SPEED_UNKNOWN;
        s3c_hsudc_uninit_phy();
        if (hsudc->pd->gpio_uninit)
                hsudc->pd->gpio_uninit();
-       s3c_hsudc_stop_activity(hsudc, driver);
+       s3c_hsudc_stop_activity(hsudc);
        spin_unlock_irqrestore(&hsudc->lock, flags);
 
        if (hsudc->transceiver)
                (void) otg_set_peripheral(hsudc->transceiver, NULL);
 
-       driver->unbind(&hsudc->gadget);
        disable_irq(hsudc->irq);
 
        dev_info(hsudc->dev, "unregistered gadget driver '%s'\n",
@@ -1247,8 +1230,8 @@ static int s3c_hsudc_vbus_draw(struct usb_gadget *gadget, unsigned mA)
 
 static struct usb_gadget_ops s3c_hsudc_gadget_ops = {
        .get_frame      = s3c_hsudc_gadget_getframe,
-       .start          = s3c_hsudc_start,
-       .stop           = s3c_hsudc_stop,
+       .udc_start      = s3c_hsudc_start,
+       .udc_stop       = s3c_hsudc_stop,
        .vbus_draw      = s3c_hsudc_vbus_draw,
 };
 
@@ -1310,6 +1293,7 @@ static int __devinit s3c_hsudc_probe(struct platform_device *pdev)
 
        hsudc->gadget.is_otg = 0;
        hsudc->gadget.is_a_peripheral = 0;
+       hsudc->gadget.speed = USB_SPEED_UNKNOWN;
 
        s3c_hsudc_setup_ep(hsudc);