usb: chipidea: udc: only clear active and halted bits in qhead

The datasheet of the synopsys core describes only to overwrite the
active and halted bits in the qhead before priming any endpoint.

Signed-off-by: Michael Grzeschik <[email protected]>
Reviewed-by: Felipe Balbi <[email protected]>
[Alex: fixed a case of line-too-long]
Signed-off-by: Alexander Shishkin <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>

diff --git a/drivers/usb/chipidea/udc.c b/drivers/usb/chipidea/udc.c
index ff393e1ecf4aedec5e79d6d2aedd2f5eb8d4abf3..0e11172a4c84aca892a1d60c7abdb2facd964593 100644 (file)
--- a/drivers/usb/chipidea/udc.c
+++ b/drivers/usb/chipidea/udc.c
@@ -461,7 +461,8 @@ static int _hardware_enqueue(struct ci13xxx_ep *mEp, struct ci13xxx_req *mReq)
 
        /*  QH configuration */
        mEp->qh.ptr->td.next   = cpu_to_le32(mReq->dma);    /* TERMINATE = 0 */
-       mEp->qh.ptr->td.token &= cpu_to_le32(~TD_STATUS);   /* clear status */
+       mEp->qh.ptr->td.token &=
+               cpu_to_le32(~(TD_STATUS_HALTED|TD_STATUS_ACTIVE));
        mEp->qh.ptr->cap |=  cpu_to_le32(QH_ZLT);
 
        wmb();   /* synchronize before ep prime */