[Q] USB urb completion handler

[loody]

hi:

2012/5/8 Ezequiel Garcia <elezegarcia at gmail.com>:
> On Mon, May 7, 2012 at 2:48 PM, Peter Senna Tschudin
> <peter.senna at gmail.com> wrote:
>> http://www.makelinux.net/ldd3/chp-13-sect-3#chp-13-sect-3.4
>>
>> " If the function succeeds, the completion handler of the urb (as
>> specified by the complete function pointer) is called exactly once
>> when the urb is completed. When this function is called, the USB core
>> is finished with the URB, and control of it is now returned to the
>> device driver."
>>
>
> Bingo! Because the driver will only submit *one* urb at a time,
> how could it possible have more than one completion handlers
> called at a time?
how about multi-thread try to send urbs on the same pipe with the same
complete function?
>
> I wasn't thinking with the right half of my brain.
> Thanks,
> Ezequiel.
>
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-- 
Regards,