usb: gadget: composite: Exclude SS Dev Cap Desc

Don't send the SuperSpeed USB Device Capability descriptor if
the gadget is not capable of SuperSpeed.
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Sevak Arakelyan <sevaka@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>

drivers/usb/gadget/composite.c

@@ -607,7 +607,6 @@ static int count_configs(struct usb_composite_dev *cdev, unsigned type)
 static int bos_desc(struct usb_composite_dev *cdev)
 {
 	struct usb_ext_cap_descriptor	*usb_ext;
-	struct usb_ss_cap_descriptor	*ss_cap;
 	struct usb_dcd_config_params	dcd_config_params;
 	struct usb_bos_descriptor	*bos = cdev->req->buf;
 
@@ -633,6 +632,9 @@ static int bos_desc(struct usb_composite_dev *cdev)
 	 * The Superspeed USB Capability descriptor shall be implemented by all
 	 * SuperSpeed devices.
 	 */
+	if (gadget_is_superspeed(cdev->gadget)) {
+		struct usb_ss_cap_descriptor *ss_cap;
+
 		ss_cap = cdev->req->buf + le16_to_cpu(bos->wTotalLength);
 		bos->bNumDeviceCaps++;
 		le16_add_cpu(&bos->wTotalLength, USB_DT_USB_SS_CAP_SIZE);
@@ -647,15 +649,18 @@ static int bos_desc(struct usb_composite_dev *cdev)
 		ss_cap->bFunctionalitySupport = USB_LOW_SPEED_OPERATION;
 
 		/* Get Controller configuration */
-	if (cdev->gadget->ops->get_config_params)
-		cdev->gadget->ops->get_config_params(&dcd_config_params);
-	else {
-		dcd_config_params.bU1devExitLat = USB_DEFAULT_U1_DEV_EXIT_LAT;
+		if (cdev->gadget->ops->get_config_params) {
+			cdev->gadget->ops->get_config_params(
+				&dcd_config_params);
+		} else {
+			dcd_config_params.bU1devExitLat =
+				USB_DEFAULT_U1_DEV_EXIT_LAT;
 			dcd_config_params.bU2DevExitLat =
 				cpu_to_le16(USB_DEFAULT_U2_DEV_EXIT_LAT);
 		}
 		ss_cap->bU1devExitLat = dcd_config_params.bU1devExitLat;
 		ss_cap->bU2DevExitLat = dcd_config_params.bU2DevExitLat;
+	}
 
 	/* The SuperSpeedPlus USB Device Capability descriptor */
 	if (gadget_is_superspeed_plus(cdev->gadget)) {