diff options
Diffstat (limited to 'drivers/usb')
| -rw-r--r-- | drivers/usb/gadget/composite.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c index cf7a5cf8503..fa785c6cfd6 100644 --- a/drivers/usb/gadget/composite.c +++ b/drivers/usb/gadget/composite.c @@ -326,8 +326,13 @@ static int config_buf(struct usb_configuration *config, dest = next; while ((descriptor = *descriptors++) != NULL) { intf = (struct usb_interface_descriptor *)dest; - if (intf->bDescriptorType == USB_DT_INTERFACE) - intf->bInterfaceNumber = interfaceCount++; + if (intf->bDescriptorType == USB_DT_INTERFACE) { + /* don't increment bInterfaceNumber for alternate settings */ + if (intf->bAlternateSetting == 0) + intf->bInterfaceNumber = interfaceCount++; + else + intf->bInterfaceNumber = interfaceCount - 1; + } dest += intf->bLength; } |