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: NMichael Grzeschik <m.grzeschik@pengutronix.de>
Reviewed-by: NFelipe Balbi <balbi@ti.com>
[Alex: fixed a case of line-too-long]
Signed-off-by: NAlexander Shishkin <alexander.shishkin@linux.intel.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

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 */