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usb: dwc3: ep0: Clear started flag on completion 

Clear ep0's DWC3_EP_TRANSFER_STARTED flag if the END_TRANSFER command is
completed. Otherwise, we can't start control transfer again after
END_TRANSFER.

Cc: stable@vger.kernel.org
Signed-off-by: Thinh Nguyen <thinhn@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@kernel.org>
This commit is contained in:
Thinh Nguyen 2019-11-27 13:10:54 -08:00 committed by Felipe Balbi
parent d3abda5a98
commit 2d7b78f59e
1 changed files with 8 additions and 0 deletions
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8
drivers/usb/dwc3/ep0.c
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@ -1117,6 +1117,9 @@ static void dwc3_ep0_xfernotready(struct dwc3 *dwc,
void dwc3_ep0_interrupt(struct dwc3 *dwc,
const struct dwc3_event_depevt *event)
{
struct dwc3_ep *dep = dwc->eps[event->endpoint_number];
u8 cmd;
switch (event->endpoint_event) {
case DWC3_DEPEVT_XFERCOMPLETE:
dwc3_ep0_xfer_complete(dwc, event);
@ -1129,7 +1132,12 @@ void dwc3_ep0_interrupt(struct dwc3 *dwc,
case DWC3_DEPEVT_XFERINPROGRESS:
case DWC3_DEPEVT_RXTXFIFOEVT:
case DWC3_DEPEVT_STREAMEVT:
break;
case DWC3_DEPEVT_EPCMDCMPLT:
cmd = DEPEVT_PARAMETER_CMD(event->parameters);
if (cmd == DWC3_DEPCMD_ENDTRANSFER)
dep->flags &= ~DWC3_EP_TRANSFER_STARTED;
break;
}
}