USB transfers in device drivers

[O'Connor, Daniel]

> On 2 May 2019, at 20:02, Hans Petter Selasky <hps at selasky.org> wrote:
> 
> On 2019-05-02 11:18, O'Connor, Daniel wrote:
>> OK, thanks.
>> To be honest I would much prefer to work out why this particular hardware & software seem to drop the ball for such a long time - 50msec without the kernel getting to schedule something (on a basically idle system) is quite perplexing to me.
> 
> Sounds like a lost IRQ issue. Did you try any of the EHCI quirks in hw.usb.ehci ?

No not, yet - thanks for the pointer!

--
Daniel O'Connor
"The nice thing about standards is that there
are so many of them to choose from."
 -- Andrew Tanenbaum