Set next dtd ptr to EP_QUEUE_HEAD_NEXT_TERMINATE for dqh when init ep0.
It means the dQH is empty.
Signed-off-by: Neil Zhang <zhangwm@xxxxxxxxxxx>
---
drivers/usb/gadget/mv_udc_core.c | 2 ++
1 files changed, 2 insertions(+), 0 deletions(-)
diff --git a/drivers/usb/gadget/mv_udc_core.c b/drivers/usb/gadget/mv_udc_core.c
index a45f889..1ac1f75 100644
--- a/drivers/usb/gadget/mv_udc_core.c
+++ b/drivers/usb/gadget/mv_udc_core.c
@@ -96,6 +96,8 @@ static void ep0_reset(struct mv_udc *udc)
(EP0_MAX_PKT_SIZE << EP_QUEUE_HEAD_MAX_PKT_LEN_POS)
| EP_QUEUE_HEAD_IOS;
+ ep->dqh->next_dtd_ptr = EP_QUEUE_HEAD_NEXT_TERMINATE;
+
epctrlx = readl(&udc->op_regs->epctrlx[0]);
if (i) { /* TX */
epctrlx |= EPCTRL_TX_ENABLE
--
1.7.4.1
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