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authorMichael Grzeschik <m.grzeschik@pengutronix.de>2013-03-30 12:54:06 +0200
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2013-03-30 08:20:48 -0700
commit776ffc16b74a5c19285135cfbc6dd02e1c733f25 (patch)
treeb756801989adaa5636b7a7e8bef0935555d6b085 /drivers/usb/chipidea
parent1cd12a9cf055e72b3094ef38ac4d9afff2e9520e (diff)
downloadop-kernel-dev-776ffc16b74a5c19285135cfbc6dd02e1c733f25.zip
op-kernel-dev-776ffc16b74a5c19285135cfbc6dd02e1c733f25.tar.gz
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>
Diffstat (limited to 'drivers/usb/chipidea')
-rw-r--r--drivers/usb/chipidea/udc.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/usb/chipidea/udc.c b/drivers/usb/chipidea/udc.c
index 3abd1ad5..94af020 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);
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