[Second transmission; hopefully this one will go through...]
Alan,
How about the attached patch? Works for me but definitely needs more
review and testing.
--david
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Mo
On Mon, 7 Mar 2016, David Mosberger wrote:
> We are seeing relatively high interrupt latencies due to usb_sg_wait()
> calling usb_submit_urb() with interrupts disabled (as a result of its
> spin_lock_irq() call).
>
> As far as I can see, io->lock protects io->status and it's not really
> necessar
We are seeing relatively high interrupt latencies due to usb_sg_wait()
calling usb_submit_urb() with interrupts disabled (as a result of its
spin_lock_irq() call).
As far as I can see, io->lock protects io->status and it's not really
necessary to hold the lock (or disable interrupts) during the
us
