Re: [PATCH/RFC 5/5] usb: Add support for streams alloc/dealloc to devio.c

Alan Stern
2011-06-17T14:35:37Z

On Fri, 17 Jun 2011 ablay@codeaurora.org wrote:

> My name is Amit Blay, I'm working with Tatyana Brokhman, I originally
> created this patch. I want to make sure I understand the solution:
>
> We will create a new IOCTL, i.e., USBDEVFS_SUBMITURB_SS. This IOCTL will
> pass new URB structure, usbdevfs_urb_ss, which will hold the "legacy" URB
> and in addition the stream_id. libusb will be able to use the new ABI
> whenever SuperSpeed streams are required.
>
> Is this correct?

This probably should be USBDEVFS_SUBMITURB_STREAM, since it is necesary
only for URBs that use bulk streaming rather than for all SuperSpeed
URBs.

Alan Stern