Transfer Buffer in URB

[Luis de Bethencourt]

On Thu, Jun 25 2015 at 10:43:32AM -0400, Greg KH wrote:
>> On Thu, Jun 25, 2015 at 06:16:28PM +0530, roni wrote:
>> What is the transfer buffer in URB?
>> 
>> What is the job of transfer buffer?
>
> The in-kernel documentation should answer these questions, which is why
> we wrote it :)

Just in case and for future people finding these through search engines:

Documentation/usb/URB.txt
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/tree/Documentation/usb/URB.txt

Luis