diff options
| author | Michael Grzeschik <m.grzeschik@pengutronix.de> | 2013-03-30 12:54:06 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-03-30 08:20:48 -0700 |
| commit | 776ffc16b74a5c19285135cfbc6dd02e1c733f25 (patch) | |
| tree | b756801989adaa5636b7a7e8bef0935555d6b085 | |
| parent | 1cd12a9cf055e72b3094ef38ac4d9afff2e9520e (diff) | |
usb: chipidea: udc: move ZLT flag change to ep_enable
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.grzeschik@pengutronix.de>
Reviewed-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/usb/chipidea/udc.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/usb/chipidea/udc.c b/drivers/usb/chipidea/udc.c index 3abd1ad5ced1..94af0208dab8 100644 --- a/drivers/usb/chipidea/udc.c +++ b/drivers/usb/chipidea/udc.c @@ -463,7 +463,6 @@ 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 */ @@ -1008,6 +1007,8 @@ 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); |