add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/drivers/usb/gadget/udc/fsl_udc_core.c
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@@ -53,7 +53,6 @@
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 #define	DMA_ADDR_INVALID	(~(dma_addr_t)0)
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 static const char driver_name[] = "fsl-usb2-udc";
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-static const char driver_desc[] = DRIVER_DESC;
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 static struct usb_dr_device __iomem *dr_regs;
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@@ -251,7 +250,7 @@
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 		break;
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 	case FSL_USB2_PHY_UTMI_WIDE:
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 		portctrl |= PORTSCX_PTW_16BIT;
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-		/* fall through */
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+		fallthrough;
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 	case FSL_USB2_PHY_UTMI:
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 	case FSL_USB2_PHY_UTMI_DUAL:
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 		if (udc->pdata->have_sysif_regs) {
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@@ -1052,9 +1051,10 @@
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 	u32 bitmask;
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 	struct ep_queue_head *qh;
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-	ep = container_of(_ep, struct fsl_ep, ep);
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-	if (!_ep || (!ep->ep.desc && ep_index(ep) != 0))
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+	if (!_ep || !_ep->desc || !(_ep->desc->bEndpointAddress&0xF))
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 		return -ENODEV;
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+
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+	ep = container_of(_ep, struct fsl_ep, ep);
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 	udc = (struct fsl_udc *)ep->udc;
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@@ -1208,7 +1208,7 @@
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 }
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 /* Change Data+ pullup status
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- * this func is used by usb_gadget_connect/disconnet
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+ * this func is used by usb_gadget_connect/disconnect
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  */
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 static int fsl_pullup(struct usb_gadget *gadget, int is_on)
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 {
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@@ -1595,14 +1595,13 @@
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 		struct fsl_req *curr_req)
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 {
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 	struct ep_td_struct *curr_td;
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-	int	td_complete, actual, remaining_length, j, tmp;
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+	int	actual, remaining_length, j, tmp;
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 	int	status = 0;
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 	int	errors = 0;
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 	struct  ep_queue_head *curr_qh = &udc->ep_qh[pipe];
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 	int direction = pipe % 2;
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 	curr_td = curr_req->head;
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-	td_complete = 0;
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 	actual = curr_req->req.length;
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 	for (j = 0; j < curr_req->dtd_count; j++) {
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@@ -1647,11 +1646,9 @@
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 				status = -EPROTO;
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 				break;
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 			} else {
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-				td_complete++;
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 				break;
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 			}
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 		} else {
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-			td_complete++;
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 			VDBG("dTD transmitted successful");
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 		}
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@@ -2064,7 +2061,7 @@
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 			"Sleep Enable: %d SOF Received Enable: %d "
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 			"Reset Enable: %d\n"
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 			"System Error Enable: %d "
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-			"Port Change Dectected Enable: %d\n"
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+			"Port Change Detected Enable: %d\n"
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 			"USB Error Intr Enable: %d USB Intr Enable: %d\n\n",
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 			(tmp_reg & USB_INTR_DEVICE_SUSPEND) ? 1 : 0,
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 			(tmp_reg & USB_INTR_SOF_EN) ? 1 : 0,
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@@ -2234,8 +2231,10 @@
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 	Internal structure setup functions
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 *******************************************************************/
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 /*------------------------------------------------------------------
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- * init resource for globle controller
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- * Return the udc handle on success or NULL on failure
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+ * init resource for global controller called by fsl_udc_probe()
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+ * On success the udc handle is initialized, on failure it is
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+ * unchanged (reset).
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+ * Return 0 on success and -1 on allocation failure
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  ------------------------------------------------------------------*/
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 static int struct_udc_setup(struct fsl_udc *udc,
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 		struct platform_device *pdev)
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@@ -2440,11 +2439,12 @@
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 	/* DEN is bidirectional ep number, max_ep doubles the number */
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 	udc_controller->max_ep = (dccparams & DCCPARAMS_DEN_MASK) * 2;
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-	udc_controller->irq = platform_get_irq(pdev, 0);
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-	if (!udc_controller->irq) {
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-		ret = -ENODEV;
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+	ret = platform_get_irq(pdev, 0);
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+	if (ret <= 0) {
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+		ret = ret ? : -ENODEV;
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 		goto err_iounmap;
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 	}
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+	udc_controller->irq = ret;
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 	ret = request_irq(udc_controller->irq, fsl_udc_irq, IRQF_SHARED,
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 			driver_name, udc_controller);