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

1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/usb/chipidea/udc.c b/drivers/usb/chipidea/udc.c
index ff393e1ecf4a..0e11172a4c84 100644
--- 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 */