usb: gadget: mv_udc: init next dtd ptr for dqh when init ep0
authorNeil Zhang <zhangwm@marvell.com>
Wed, 12 Oct 2011 08:49:29 +0000 (16:49 +0800)
committerFelipe Balbi <balbi@ti.com>
Thu, 13 Oct 2011 17:42:01 +0000 (20:42 +0300)
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@marvell.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
drivers/usb/gadget/mv_udc_core.c

index 80168d11841de286e27f015134b22497582176ac..8dab8c4d10bddf7d81b73e440f09dc80142e799e 100644 (file)
@@ -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