From: Bin Meng <bmeng.cn@gmail.com>
Date: Mon, 18 Sep 2017 13:40:40 +0000 (-0700)
Subject: usb: Handle audio extension endpoint descriptor in usb_parse_config()
X-Git-Tag: v2017.11-rc1~2^2~12
X-Git-Url: https://git.sur5r.net/?a=commitdiff_plain;h=2f0eb2ac4b84f94e2f7de6e4ec9b63ce07cfec7a;p=u-boot

usb: Handle audio extension endpoint descriptor in usb_parse_config()

Normal endpoint descriptor size is 7, but for audio extension it is
9. Handle that correctly when parsing endpoint descriptor.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
---

diff --git a/common/usb.c b/common/usb.c
index 0904259757..6cb92ef4f5 100644
--- a/common/usb.c
+++ b/common/usb.c
@@ -437,12 +437,13 @@ static int usb_parse_config(struct usb_device *dev,
 			}
 			break;
 		case USB_DT_ENDPOINT:
-			if (head->bLength != USB_DT_ENDPOINT_SIZE) {
+			if (head->bLength != USB_DT_ENDPOINT_SIZE &&
+			    head->bLength != USB_DT_ENDPOINT_AUDIO_SIZE) {
 				printf("ERROR: Invalid USB EP length (%d)\n",
 					head->bLength);
 				break;
 			}
-			if (index + USB_DT_ENDPOINT_SIZE >
+			if (index + head->bLength >
 			    dev->config.desc.wTotalLength) {
 				puts("USB EP descriptor overflowed buffer!\n");
 				break;