usb: gadget: udc: atmel: simplify endpoint allocation

Simplify the endpoint allocation and cleanup the code.

Signed-off-by: Cristian Birsan <cristian.birsan@microchip.com>

Author: cristibirsan

drivers/usb/gadget/udc/atmel_usba_udc.c

@@ -1096,7 +1096,6 @@ static struct usb_ep *atmel_usba_match_ep(struct usb_gadget *gadget,
 
 		ep->ept_cfg |= USBA_BF(BK_NUMBER, ep->nr_banks);
 
-		ep->udc->configured_ep++;
 	}
 
 	return _ep;
@@ -1789,7 +1788,7 @@ static irqreturn_t usba_udc_irq(int irq, void *devid)
 
 	if (status & USBA_END_OF_RESET) {
 		struct usba_ep *ep0, *ep;
-		int i, n;
+		int i;
 
 		usba_writel(udc, INT_CLR,
 			USBA_END_OF_RESET|USBA_END_OF_RESUME
@@ -1837,13 +1836,14 @@ static irqreturn_t usba_udc_irq(int irq, void *devid)
 				"ODD: EP0 configuration is invalid!\n");
 
 		/* Preallocate other endpoints */
-		n = fifo_mode ? udc->num_ep : udc->configured_ep;
-		for (i = 1; i < n; i++) {
+		for (i = 1; i < udc->num_ep; i++) {
 			ep = &udc->usba_ep[i];
-			usba_ep_writel(ep, CFG, ep->ept_cfg);
-			if (!(usba_ep_readl(ep, CFG) & USBA_EPT_MAPPED))
-				dev_err(&udc->pdev->dev,
-					"ODD: EP%d configuration is invalid!\n", i);
+			if (ep->ep.claimed) {
+				usba_ep_writel(ep, CFG, ep->ept_cfg);
+				if (!(usba_ep_readl(ep, CFG) & USBA_EPT_MAPPED))
+					dev_err(&udc->pdev->dev,
+						"ODD: EP%d configuration is invalid!\n", i);
+			}
 		}
 	}
 
@@ -2010,10 +2010,6 @@ static int atmel_usba_stop(struct usb_gadget *gadget)
 	if (udc->vbus_pin)
 		disable_irq(gpiod_to_irq(udc->vbus_pin));
 
-	if (fifo_mode == 0)
-		udc->configured_ep = 1;
-
-	udc->suspended = false;
 	usba_stop(udc);
 
 	udc->driver = NULL;
@@ -2095,7 +2091,6 @@ static struct usba_ep * atmel_udc_of_init(struct platform_device *pdev,
 		pp = NULL;
 		while ((pp = of_get_next_child(np, pp)))
 			udc->num_ep++;
-		udc->configured_ep = 1;
 	} else {
 		udc->num_ep = usba_config_fifo_table(udc);
 	}

drivers/usb/gadget/udc/atmel_usba_udc.h

@@ -324,7 +324,6 @@ struct usba_udc {
 	int irq;
 	struct gpio_desc *vbus_pin;
 	int num_ep;
-	int configured_ep;
 	struct usba_fifo_cfg *fifo_cfg;
 	struct clk *pclk;
 	struct clk *hclk;