diff options
Diffstat (limited to 'drivers/usb/gadget/composite.c')
| -rw-r--r-- | drivers/usb/gadget/composite.c | 17 |
1 files changed, 15 insertions, 2 deletions
diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c index 5106cc56cb..c7e7623747 100644 --- a/drivers/usb/gadget/composite.c +++ b/drivers/usb/gadget/composite.c @@ -735,8 +735,21 @@ composite_setup(struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl) case USB_DT_DEVICE: cdev->desc.bNumConfigurations = count_configs(cdev, USB_DT_DEVICE); - cdev->desc.bMaxPacketSize0 = - cdev->gadget->ep0->maxpacket; + + /* + * If the speed is Super speed, then the supported + * max packet size is 512 and it should be sent as + * exponent of 2. So, 9(2^9=512) should be filled in + * bMaxPacketSize0. Also fill USB version as 3.0 + * if speed is Super speed. + */ + if (cdev->gadget->speed == USB_SPEED_SUPER) { + cdev->desc.bMaxPacketSize0 = 9; + cdev->desc.bcdUSB = cpu_to_le16(0x0300); + } else { + cdev->desc.bMaxPacketSize0 = + cdev->gadget->ep0->maxpacket; + } value = min(w_length, (u16) sizeof cdev->desc); memcpy(req->buf, &cdev->desc, value); break; |