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@xxxxxxxxxxxxxxx
Signed-off-by: Thinh Nguyen <thinhn@xxxxxxxxxxxx>
---
drivers/usb/dwc3/ep0.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/drivers/usb/dwc3/ep0.c b/drivers/usb/dwc3/ep0.c
index 3996b9c4ff8d..fd1b100d2927 100644
--- a/drivers/usb/dwc3/ep0.c
+++ b/drivers/usb/dwc3/ep0.c
@@ -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;
}
}
--
2.11.0
