Its not needed to change the ZLT flag before every ep_prime. This patch moves
this to the ep_enable and applies it only for non configuration endpoints.
Signed-off-by: Michael Grzeschik <m.grzesc...@pengutronix.de>
---
Changes since v1:
- rebased on the new alignment patch
drivers/usb/chipidea/udc.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/usb/chipidea/udc.c b/drivers/usb/chipidea/udc.c
index 73ddcc9..53c6c7f 100644
--- a/drivers/usb/chipidea/udc.c
+++ b/drivers/usb/chipidea/udc.c
@@ -474,7 +474,6 @@ static int _hardware_enqueue(struct ci13xxx_ep *mEp, struct
ci13xxx_req *mReq)
/* QH configuration */
mEp->qh.ptr->td.next = mReq->dma; /* TERMINATE = 0 */
mEp->qh.ptr->td.token &= ~(TD_STATUS_HALTED|TD_STATUS_ACTIVE); /*
clear status */
- mEp->qh.ptr->cap |= QH_ZLT;
wmb(); /* synchronize before ep prime */
@@ -1038,6 +1037,8 @@ static int ep_enable(struct usb_ep *ep,
mEp->qh.ptr->cap &= ~QH_MULT;
else
mEp->qh.ptr->cap &= ~QH_ZLT;
+ if (mEp->num)
+ mEp->qh.ptr->cap |= QH_ZLT;
mEp->qh.ptr->cap |=
(mEp->ep.maxpacket << __ffs(QH_MAX_PKT)) & QH_MAX_PKT;
--
1.8.2.rc2
--
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