This patch reworks the cap value from several read
and write operations to one single operation.
Signed-off-by: Michael Grzeschik <m.grzesc...@pengutronix.de>
Reviewed-by: Felipe Balbi <ba...@ti.com>
---
drivers/usb/chipidea/udc.c | 17 ++++++++---------
1 file changed, 8 insertions(+), 9 deletions(-)
diff --git a/drivers/usb/chipidea/udc.c b/drivers/usb/chipidea/udc.c
index 19fc185..b2c227f 100644
--- a/drivers/usb/chipidea/udc.c
+++ b/drivers/usb/chipidea/udc.c
@@ -1018,6 +1018,7 @@ static int ep_enable(struct usb_ep *ep,
struct ci13xxx_ep *mEp = container_of(ep, struct ci13xxx_ep, ep);
int retval = 0;
unsigned long flags;
+ u32 val = 0;
if (ep == NULL || desc == NULL)
return -EINVAL;
@@ -1039,19 +1040,17 @@ static int ep_enable(struct usb_ep *ep,
trace_ci_ep_enable(mEp, 0);
- mEp->qh.ptr->cap = 0;
-
if (mEp->type == USB_ENDPOINT_XFER_CONTROL)
- mEp->qh.ptr->cap |= cpu_to_le32(QH_IOS);
+ val |= QH_IOS;
else if (mEp->type == USB_ENDPOINT_XFER_ISOC)
- mEp->qh.ptr->cap &= cpu_to_le32(~QH_MULT);
- else
- mEp->qh.ptr->cap &= cpu_to_le32(~QH_ZLT);
+ val &= ~QH_MULT;
+
if (mEp->num)
- mEp->qh.ptr->cap |= cpu_to_le32(QH_ZLT);
+ val |= QH_ZLT;
+
+ val |= (mEp->ep.maxpacket << __ffs(QH_MAX_PKT)) & QH_MAX_PKT;
+ mEp->qh.ptr->cap = cpu_to_le32(val);
- mEp->qh.ptr->cap |= cpu_to_le32((mEp->ep.maxpacket << __ffs(QH_MAX_PKT))
- & QH_MAX_PKT);
mEp->qh.ptr->td.next |= cpu_to_le32(TD_TERMINATE); /* needed? */
/*
--
1.8.2.rc2
--
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