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usb: Handle audio extension endpoint descriptor in usb_parse_config()

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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>
This commit is contained in:
Bin Meng 2017-09-18 06:40:40 -07:00 • committed by Marek Vasut
parent 8a0e6d8307
commit 2f0eb2ac4b
1 changed files with 3 additions and 2 deletions
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5
common/usb.c
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@ -437,12 +437,13 @@ static int usb_parse_config(struct usb_device *dev,
} }
break; break;
case USB_DT_ENDPOINT: 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", printf("ERROR: Invalid USB EP length (%d)\n",
head->bLength); head->bLength);
break; break;
} }
if (index + USB_DT_ENDPOINT_SIZE > if (index + head->bLength >
dev->config.desc.wTotalLength) { dev->config.desc.wTotalLength) {
puts("USB EP descriptor overflowed buffer!\n"); puts("USB EP descriptor overflowed buffer!\n");
break; break;