From: Michael Grzeschik <m.grzesc...@pengutronix.de>
Its not necessary and also not specified in the datasheet 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>
Reviewed-by: Felipe Balbi <ba...@ti.com>
Signed-off-by: Alexander Shishkin <alexander.shish...@linux.intel.com>
---
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 20ae435..d5f0322 100644
--- a/drivers/usb/chipidea/udc.c
+++ b/drivers/usb/chipidea/udc.c
@@ -476,7 +476,6 @@ static int _hardware_enqueue(struct ci13xxx_ep *mEp, struct
ci13xxx_req *mReq)
mEp->qh.ptr->td.next = cpu_to_le32(mReq->dma); /* TERMINATE = 0 */
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 */
@@ -1034,6 +1033,8 @@ static int ep_enable(struct usb_ep *ep,
if (mEp->type == USB_ENDPOINT_XFER_CONTROL)
cap |= QH_IOS;
+ if (mEp->num)
+ cap |= QH_ZLT;
cap |= (mEp->ep.maxpacket << __ffs(QH_MAX_PKT)) & QH_MAX_PKT;
mEp->qh.ptr->cap = cpu_to_le32(cap);
--
1.7.10.4
--
To unsubscribe from this list: send the line "unsubscribe linux-usb" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
