From 080ff5f4719e21c78f8ec96eea4f82b2fd047fa4 Mon Sep 17 00:00:00 2001 From: Michael Grzeschik <m.grzeschik@pengutronix.de> Date: Sat, 30 Mar 2013 12:54:04 +0200 Subject: [PATCH] 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> --- 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 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 */ -- 2.34.1