usb: gadget: s3c2410: fix gadget->dev registration

Whenever ->udc_start() gets called, gadget driver
has already being bound to the udc controller, which
means that gadget->dev had to be already initialized
and added to driver model.

This patch fixes s3c2410 mistake.

Signed-off-by: Felipe Balbi <balbi@ti.com>

1 files changed, 11 insertions, 15 deletions

diff --git a/drivers/usb/gadget/s3c2410_udc.c b/drivers/usb/gadget/s3c2410_udc.c
index fc07b4381286..940485899efc 100644
--- a/drivers/usb/gadget/s3c2410_udc.c
+++ b/drivers/usb/gadget/s3c2410_udc.c
@@ -1669,7 +1669,6 @@ static int s3c2410_udc_start(struct usb_gadget *g,
                 struct usb_gadget_driver *driver)
 {
         struct s3c2410_udc *udc = to_s3c2410(g)
-        int             retval;
 
         dprintk(DEBUG_NORMAL, "%s() '%s'\n", __func__, driver->driver.name);
 
@@ -1677,22 +1676,10 @@ static int s3c2410_udc_start(struct usb_gadget *g,
         udc->driver = driver;
         udc->gadget.dev.driver = &driver->driver;
 
-        /* Bind the driver */
-        retval = device_add(&udc->gadget.dev);
-        if (retval) {
-                dev_err(&udc->gadget.dev, "Error in device_add() : %d\n", retval);
-                goto register_error;
-        }
-
         /* Enable udc */
         s3c2410_udc_enable(udc);
 
         return 0;
-
-register_error:
-        udc->driver = NULL;
-        udc->gadget.dev.driver = NULL;
-        return retval;
 }
 
 static int s3c2410_udc_stop(struct usb_gadget *g,
@@ -1700,7 +1687,6 @@ static int s3c2410_udc_stop(struct usb_gadget *g,
 {
         struct s3c2410_udc *udc = to_s3c2410(g);
 
-        device_del(&udc->gadget.dev);
         udc->driver = NULL;
 
         /* Disable udc */
@@ -1842,6 +1828,13 @@ static int s3c2410_udc_probe(struct platform_device *pdev)
         udc->gadget.dev.parent = &pdev->dev;
         udc->gadget.dev.dma_mask = pdev->dev.dma_mask;
 
+        /* Bind the driver */
+        retval = device_add(&udc->gadget.dev);
+        if (retval) {
+                dev_err(&udc->gadget.dev, "Error in device_add() : %d\n", retval);
+                goto err_device_add;
+        }
+
         the_controller = udc;
         platform_set_drvdata(pdev, udc);
 
@@ -1930,6 +1923,8 @@ err_gpio_claim:
 err_int:
         free_irq(IRQ_USBD, udc);
 err_map:
+        device_unregister(&udc->gadget.dev);
+err_device_add:
         iounmap(base_addr);
 err_mem:
         release_mem_region(rsrc_start, rsrc_len);
@@ -1947,10 +1942,11 @@ static int s3c2410_udc_remove(struct platform_device *pdev)
 
         dev_dbg(&pdev->dev, "%s()\n", __func__);
 
-        usb_del_gadget_udc(&udc->gadget);
         if (udc->driver)
                 return -EBUSY;
 
+        usb_del_gadget_udc(&udc->gadget);
+        device_unregister(&udc->gadget.dev);
         debugfs_remove(udc->regs_info);
 
         if (udc_info && !udc_info->udc_command &&