Author: thompsa
Date: Thu Mar 11 21:46:33 2010
New Revision: 205031
URL: http://svn.freebsd.org/changeset/base/205031
Log:
It appears that some UVISOR devices do not handle when the clear stall command
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
Modified:
head/sys/dev/usb/serial/uvisor.c
Modified: head/sys/dev/usb/serial/uvisor.c
==============================================================================
--- head/sys/dev/usb/serial/uvisor.c Thu Mar 11 21:45:31 2010
(r205030)
+++ head/sys/dev/usb/serial/uvisor.c Thu Mar 11 21:46:33 2010
(r205031)
@@ -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);
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