usb: gadget: pxa27x: 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 pxa27x mistake.

Tested-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Felipe Balbi <balbi@ti.com>

diff --git a/drivers/usb/gadget/pxa27x_udc.c b/drivers/usb/gadget/pxa27x_udc.c
index f7d25795821ac2830aa6ae587eda30c714c16342..2fc867652ef5df8f97e55c7c3ebe45196c672ab7 100644 (file)
--- a/drivers/usb/gadget/pxa27x_udc.c
+++ b/drivers/usb/gadget/pxa27x_udc.c
@@ -1814,11 +1814,6 @@ static int pxa27x_udc_start(struct usb_gadget *g,
        udc->gadget.dev.driver = &driver->driver;
        dplus_pullup(udc, 1);
 
-       retval = device_add(&udc->gadget.dev);
-       if (retval) {
-               dev_err(udc->dev, "device_add error %d\n", retval);
-               goto fail;
-       }
        if (!IS_ERR_OR_NULL(udc->transceiver)) {
                retval = otg_set_peripheral(udc->transceiver->otg,
                                                &udc->gadget);
@@ -1876,7 +1871,6 @@ static int pxa27x_udc_stop(struct usb_gadget *g,
 
        udc->driver = NULL;
 
-       device_del(&udc->gadget.dev);
 
        if (!IS_ERR_OR_NULL(udc->transceiver))
                return otg_set_peripheral(udc->transceiver->otg, NULL);
@@ -2480,13 +2474,24 @@ static int __init pxa_udc_probe(struct platform_device *pdev)
                        driver_name, udc->irq, retval);
                goto err_irq;
        }
+
+       retval = device_add(&udc->gadget.dev);
+       if (retval) {
+               dev_err(udc->dev, "device_add error %d\n", retval);
+               goto err_dev_add;
+       }
+
        retval = usb_add_gadget_udc(&pdev->dev, &udc->gadget);
        if (retval)
                goto err_add_udc;
 
        pxa_init_debugfs(udc);
+
        return 0;
+
 err_add_udc:
+       device_unregister(&udc->gadget.dev);
+err_dev_add:
        free_irq(udc->irq, udc);
 err_irq:
        iounmap(udc->regs);
@@ -2507,6 +2512,7 @@ static int __exit pxa_udc_remove(struct platform_device *_dev)
        int gpio = udc->mach->gpio_pullup;
 
        usb_del_gadget_udc(&udc->gadget);
+       device_del(&udc->gadget.dev);
        usb_gadget_unregister_driver(udc->driver);
        free_irq(udc->irq, udc);
        pxa_cleanup_debugfs(udc);