usb: dwc3: gadget: defer endpoint name change

We should only change endpoint names when we
actually manage to enable/disable it.
Signed-off-by: Felipe Balbi <balbi@ti.com>

drivers/usb/dwc3/gadget.c

@@ -547,6 +547,23 @@ static int __dwc3_gadget_ep_enable(struct dwc3_ep *dep,
 		trb_link->ctrl |= DWC3_TRB_CTRL_HWO;
 	}
 
+	switch (usb_endpoint_type(desc)) {
+	case USB_ENDPOINT_XFER_CONTROL:
+		strlcat(dep->name, "-control", sizeof(dep->name));
+		break;
+	case USB_ENDPOINT_XFER_ISOC:
+		strlcat(dep->name, "-isoc", sizeof(dep->name));
+		break;
+	case USB_ENDPOINT_XFER_BULK:
+		strlcat(dep->name, "-bulk", sizeof(dep->name));
+		break;
+	case USB_ENDPOINT_XFER_INT:
+		strlcat(dep->name, "-int", sizeof(dep->name));
+		break;
+	default:
+		dev_err(dwc->dev, "invalid endpoint transfer type\n");
+	}
+
 	return 0;
 }
 
@@ -604,6 +621,10 @@ static int __dwc3_gadget_ep_disable(struct dwc3_ep *dep)
 	dep->type = 0;
 	dep->flags = 0;
 
+	snprintf(dep->name, sizeof(dep->name), "ep%d%s",
+			dep->number >> 1,
+			(dep->number & 1) ? "in" : "out");
+
 	return 0;
 }
 
@@ -649,23 +670,6 @@ static int dwc3_gadget_ep_enable(struct usb_ep *ep,
 		return 0;
 	}
 
-	switch (usb_endpoint_type(desc)) {
-	case USB_ENDPOINT_XFER_CONTROL:
-		strlcat(dep->name, "-control", sizeof(dep->name));
-		break;
-	case USB_ENDPOINT_XFER_ISOC:
-		strlcat(dep->name, "-isoc", sizeof(dep->name));
-		break;
-	case USB_ENDPOINT_XFER_BULK:
-		strlcat(dep->name, "-bulk", sizeof(dep->name));
-		break;
-	case USB_ENDPOINT_XFER_INT:
-		strlcat(dep->name, "-int", sizeof(dep->name));
-		break;
-	default:
-		dev_err(dwc->dev, "invalid endpoint transfer type\n");
-	}
-
 	spin_lock_irqsave(&dwc->lock, flags);
 	ret = __dwc3_gadget_ep_enable(dep, desc, ep->comp_desc, false, false);
 	spin_unlock_irqrestore(&dwc->lock, flags);
@@ -694,10 +698,6 @@ static int dwc3_gadget_ep_disable(struct usb_ep *ep)
 		return 0;
 	}
 
-	snprintf(dep->name, sizeof(dep->name), "ep%d%s",
-			dep->number >> 1,
-			(dep->number & 1) ? "in" : "out");
-
 	spin_lock_irqsave(&dwc->lock, flags);
 	ret = __dwc3_gadget_ep_disable(dep);
 	spin_unlock_irqrestore(&dwc->lock, flags);