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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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