* Alan Stern | 2011-03-18 21:27:15 [-0400]:
>On Fri, 18 Mar 2011, Paul Zimmerman wrote:
>
>> > --- a/drivers/usb/gadget/audio.c
>> > +++ b/drivers/usb/gadget/audio.c
>> > @@ -52,7 +52,7 @@ static struct usb_device_descriptor device_desc = {
>> > .bLength = sizeof device_desc,
>> > .bDescriptorType = USB_DT_DEVICE,
>> >
>> > - .bcdUSB = __constant_cpu_to_le16(0x200),
>> > + .bcdUSB = cpu_to_le16(0x0300),
>> >
>> > .bDeviceClass = USB_CLASS_PER_INTERFACE,
>> > .bDeviceSubClass = 0,
>>
>> This won't work. Now the gadget will not be recognized by a USB 2.0
>> host.
>
>Why not? I'm not aware of any hosts that will refuse to work with a
>device merely because the bcdUSB field says 0x0300 instead of 0x0200.
Quote from ch 9.2.6.6:
|Devices with a value of at least 0210H in the bcdUSB field of their
|device descriptor shall support GetDescriptor (BOS Descriptor) requests.
The device can't handle the GetDescriptor (BOS) yet. I don't know if
"shall" means "must" or "should".
>Alan Stern
Sebastian
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