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SubjectRe: [PATCH v3] usb: add new usb gadget for ACM and mass storage
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On Mon, 10 Oct 2011 10:33:01 +0200, Klaus Schwarzkopf <schwarzkopf@sensortherm.de> wrote:
>> +static struct usb_device_descriptor device_desc = {
>> + .bLength = sizeof device_desc,
>> + .bDescriptorType = USB_DT_DEVICE,
>> +
>> + .bcdUSB = cpu_to_le16(0x0200),
>> +
>> + .bDeviceClass = USB_CLASS_COMM,
>> + .bDeviceSubClass = 0,
>> + .bDeviceProtocol = 0,

> Should bDeviceClass, bDeviceSubClass, and bDeviceProtocol have the same
> value like in the file multi.c?
>
> .bDeviceClass = USB_CLASS_MISC /* 0xEF */,
> .bDeviceSubClass = 2,
> .bDeviceProtocol = 1,

IIRC, the reason multi.c has those is because Windows does not recognise
a multi-configuration device with zeros here.


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