[PATCH 5.6 39/71] usb: dwc3: gadget: Dont clear flags before transfer ended

From: Greg Kroah-Hartman
Date: Mon Apr 20 2020 - 08:44:08 EST


From: Thinh Nguyen <Thinh.Nguyen@xxxxxxxxxxxx>

commit a114c4ca64bd522aec1790c7e5c60c882f699d8f upstream.

We track END_TRANSFER command completion. Don't clear transfer
started/ended flag prematurely. Otherwise, we'd run into the problem
with restarting transfer before END_TRANSFER command finishes.

Fixes: 6d8a019614f3 ("usb: dwc3: gadget: check for Missed Isoc from event status")
Signed-off-by: Thinh Nguyen <thinhn@xxxxxxxxxxxx>
Signed-off-by: Felipe Balbi <balbi@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
drivers/usb/dwc3/gadget.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)

--- a/drivers/usb/dwc3/gadget.c
+++ b/drivers/usb/dwc3/gadget.c
@@ -2570,10 +2570,8 @@ static void dwc3_gadget_endpoint_transfe

dwc3_gadget_ep_cleanup_completed_requests(dep, event, status);

- if (stop) {
+ if (stop)
dwc3_stop_active_transfer(dep, true, true);
- dep->flags = DWC3_EP_ENABLED;
- }

/*
* WORKAROUND: This is the 2nd half of U1/U2 -> U0 workaround.