I know that allocing a URB should be done by usb_alloc_urb. However,
as it would be a complete pain if more than one URB were active on our
device, I thought to alloc the URB along with the main device desc. as
a memory traffic optimization (does the slab code do its funky stuff
on URBs?) and general simplification.
Therefore it is necessary to manually clear the URB. Is there is a
reason why there isn't an API call to do this? (Or am I missing
something?)
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