Use usbd_transfer_unsetup() instead of usbd_transfer_stop() so that
we don't have to worry about locking. MFC after: 1 weeks
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@ -770,8 +770,10 @@ uaudio_detach(device_t dev)
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* will time out and close opened /dev/dspX.Y device(s), if
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* any.
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*/
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uaudio_chan_stop(&sc->sc_play_chan);
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uaudio_chan_stop(&sc->sc_rec_chan);
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if (sc->sc_play_chan.valid)
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usbd_transfer_unsetup(sc->sc_play_chan.xfer, UAUDIO_NCHANBUFS);
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if (sc->sc_rec_chan.valid)
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usbd_transfer_unsetup(sc->sc_rec_chan.xfer, UAUDIO_NCHANBUFS);
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if (bus_generic_detach(dev) != 0) {
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DPRINTF("detach failed!\n");
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