Sergei Shtylyov <sergei.shtylyov@xxxxxxxxxxxxxxxxxx> writes:
> On 2/2/2016 4:39 AM, John Youn wrote:
>
>> The USB 3.1 specification replaces the USB 3.0 specification and all new
>> devices that are running at SuperSpeed or higher speeds must report a
>> bcdUSB of 0x0310.
>>
>> Signed-off-by: John Youn <johnyoun@xxxxxxxxxxxx>
>> ---
>> drivers/usb/gadget/composite.c | 2 +-
>> 1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c
>> index 8b14c2a..ce5dbc5 100644
>> --- a/drivers/usb/gadget/composite.c
>> +++ b/drivers/usb/gadget/composite.c
>> @@ -1499,7 +1499,7 @@ composite_setup(struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl)
>> cdev->gadget->ep0->maxpacket;
>> if (gadget_is_superspeed(gadget)) {
>> if (gadget->speed >= USB_SPEED_SUPER) {
>> - cdev->desc.bcdUSB = cpu_to_le16(0x0300);
>> + cdev->desc.bcdUSB = cpu_to_le16(0x0310);
>
> Not 0x0301?
No. Quoting from Universal Serial Bus 3.1 Specification, Revision 1.0:
The device descriptor of an Enhanced SuperSpeed device shall have a version number of 3.1
(0310H). The device descriptor of an Enhanced SuperSpeed device operating in one of the USB
2.0 modes shall have a version number of 2.1 (0210H).
Bjørn
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