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It appears that some UVISOR devices do not handle when the clear stall command

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is issued at the beginning of the initial IN/OUT data transfers.  Reason
unknown, probably firmware fault. Now the stall is only cleared on data
transfer errors.

PR:		usb/144199
Submitted by:	Hans Petter Selasky
This commit is contained in:
Andrew Thompson 2010-03-11 21:46:33 +00:00
parent 9a8e0122d2
commit 8366b369e4
1 changed files with 0 additions and 5 deletions
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5
sys/dev/usb/serial/uvisor.c
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@ -338,11 +338,6 @@ uvisor_attach(device_t dev)
DPRINTF("could not allocate all pipes\n");
goto detach;
}
/* clear stall at first run */
mtx_lock(&sc->sc_mtx);
usbd_xfer_set_stall(sc->sc_xfer[UVISOR_BULK_DT_WR]);
usbd_xfer_set_stall(sc->sc_xfer[UVISOR_BULK_DT_RD]);
mtx_unlock(&sc->sc_mtx);
error = ucom_attach(&sc->sc_super_ucom, &sc->sc_ucom, 1, sc,
&uvisor_callback, &sc->sc_mtx);