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Commit 080ff5f4 authored by Michael Grzeschik's avatar Michael Grzeschik Committed by Greg Kroah-Hartman
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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: default avatarMichael Grzeschik <m.grzeschik@pengutronix.de>
Reviewed-by: default avatarFelipe Balbi <balbi@ti.com>
[Alex: fixed a case of line-too-long]
Signed-off-by: default avatarAlexander Shishkin <alexander.shishkin@linux.intel.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 938d323f

drivers/usb/chipidea/udc.c

+2 −1
Original line number Diff line number Diff line
@@ -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 */