[1/3] usb: dwc3: gadget: use update transfer command

Message ID 1443471584-21683-1-git-send-email-balbi@ti.com
State Accepted
Commit 6bb4fe12ea089da98b89dc2630d2273d60fe0c29
Headers show

Commit Message

Felipe Balbi Sept. 28, 2015, 8:19 p.m.
If we get a Xfer Not Ready event with reason
"Transfer Active" it means endpoint is still
transferring data and we can use that to issue
update transfer for this particular endpoint
in case we have pending requests in our queue.

Signed-off-by: Felipe Balbi <balbi@ti.com>
---
 drivers/usb/dwc3/gadget.c | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

Patch

diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
index c57e2002bcff..ee3d05fa674d 100644
--- a/drivers/usb/dwc3/gadget.c
+++ b/drivers/usb/dwc3/gadget.c
@@ -2012,15 +2012,16 @@  static void dwc3_endpoint_interrupt(struct dwc3 *dwc,
 		if (usb_endpoint_xfer_isoc(dep->endpoint.desc)) {
 			dwc3_gadget_start_isoc(dwc, dep, event);
 		} else {
+			int active;
 			int ret;
 
+			active = event->status & DEPEVT_STATUS_TRANSFER_ACTIVE;
+
 			dwc3_trace(trace_dwc3_gadget, "%s: reason %s",
-					dep->name, event->status &
-					DEPEVT_STATUS_TRANSFER_ACTIVE
-					? "Transfer Active"
+					dep->name, active ? "Transfer Active"
 					: "Transfer Not Active");
 
-			ret = __dwc3_gadget_kick_transfer(dep, 0, 1);
+			ret = __dwc3_gadget_kick_transfer(dep, 0, !active);
 			if (!ret || ret == -EBUSY)
 				return;