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trezorhal: reply with winusb guid just for interface 0

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This commit is contained in:
Pavol Rusnak 2018-01-24 00:06:50 +01:00
parent ca0918dbce
commit 9fcb59c3ca
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GPG Key ID: 91F3B339B9A02A3D
1 changed files with 4 additions and 3 deletions
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embed/trezorhal/usb.c
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@ -92,8 +92,8 @@ void usb_init(const usb_dev_info_t *dev_info) {
// Configuration descriptor
usb_config_desc->bLength = sizeof(usb_config_descriptor_t);
usb_config_desc->bDescriptorType = USB_DESC_TYPE_CONFIGURATION;
usb_config_desc->wTotalLength = sizeof(usb_config_descriptor_t);
usb_config_desc->bNumInterfaces = 0;
usb_config_desc->wTotalLength = sizeof(usb_config_descriptor_t); // will be updated later via usb_desc_add_iface()
usb_config_desc->bNumInterfaces = 0; // will be updated later via usb_desc_add_iface()
usb_config_desc->bConfigurationValue = 0x01;
usb_config_desc->iConfiguration = USBD_IDX_CONFIG_STR;
usb_config_desc->bmAttributes = 0x80; // 0x80 = bus powered; 0xC0 = self powered
@ -342,7 +342,8 @@ static uint8_t usb_class_setup(USBD_HandleTypeDef *dev, USBD_SetupReqTypedef *re
#if USE_WINUSB
if ((req->bmRequest & USB_REQ_RECIPIENT_MASK) == USB_REQ_RECIPIENT_INTERFACE) {
if (req->bRequest == USB_WINUSB_VENDOR_CODE) {
if (req->wIndex == USB_WINUSB_REQ_GET_EXTENDED_PROPERTIES_OS_FEATURE_DESCRIPTOR) {
if (req->wIndex == USB_WINUSB_REQ_GET_EXTENDED_PROPERTIES_OS_FEATURE_DESCRIPTOR &&
(req->wValue & 0xFF) == 0) { // reply only if interface is 0
static const uint8_t winusb_guid[] = {
// header
0x92, 0x00, 0x00, 0x00, // dwLength