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SubjectRe: [PATCH 0/7] HID: picoLCD updates
On Thu, 16 Aug 2012, Bruno Prémont wrote:

> > I don't really understand this explanation. Once usb_kill_urb() returns,
> > the URB should be available for future use (and therefore all queues
> > completely drained).
>
> I won't have time today to check, though my guess is that on each
> echo $usb-id > bind; echo $usb-id > unbind
> under /sys/bus/hid/drivers/hid-picolcd/ the USB urb queue fills a bit does
> not get cleared.
>
> Is usb_kill_urb() called when unbinding just the specific hid driver?

Yup, through hid_hw_stop() -> usbhid_stop().

> If so my short timing between bind/unbind must be triggering something
> else...
>
> Otherwise I'm missing something as at first time I got no "output queue full"
> messages, but as I repeated the bind/unbind sequences the prints per bind/unbind
> iteration increased in number.
>
> Anyhow, on Friday evening/week-end I will continue digging and report back with my
> findings.

Thank you, Bruno.

--
Jiri Kosina
SUSE Labs
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