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usb: dwc3: gadget: Check for in-progress END_TRANSFER

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While handling TRBs completion, if a END_TRANSFER command isn't
completed, don't kick new transfer or issue END_TRANSFER command.

Signed-off-by: Thinh Nguyen <thinhn@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@kernel.org>
This commit is contained in:
Thinh Nguyen 2020-05-05 19:46:33 -07:00 • committed by Felipe Balbi
parent 27b31b91b0
commit b6842d4938
1 changed files with 4 additions and 0 deletions
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4
drivers/usb/dwc3/gadget.c
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@ -2675,11 +2675,15 @@ static void dwc3_gadget_endpoint_transfer_in_progress(struct dwc3_ep *dep,
dwc3_gadget_ep_cleanup_completed_requests(dep, event, status);
if (dep->flags & DWC3_EP_END_TRANSFER_PENDING)
goto out;
if (stop)
dwc3_stop_active_transfer(dep, true, true);
else if (dwc3_gadget_ep_should_continue(dep))
__dwc3_gadget_kick_transfer(dep);
out:
/*
* WORKAROUND: This is the 2nd half of U1/U2 -> U0 workaround.
* See dwc3_gadget_linksts_change_interrupt() for 1st half.