diff options
| author | Thinh Nguyen <Thinh.Nguyen@synopsys.com> | 2019-11-27 13:10:54 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-12-17 20:39:14 +0100 |
| commit | c5320472be4fe909f53279d2fd5aaa422dd06f69 (patch) | |
| tree | 5568f6c2437195e54a98cece71faa44c0db91a8b | |
| parent | ef785dd3ca4407e06210645a332728a3f84b34c7 (diff) | |
usb: dwc3: ep0: Clear started flag on completion
commit 2d7b78f59e020b07fc6338eefe286f54ee2d6773 upstream.
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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/usb/dwc3/ep0.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/usb/dwc3/ep0.c b/drivers/usb/dwc3/ep0.c index 89fe53c846ef..cb50806d2459 100644 --- a/drivers/usb/dwc3/ep0.c +++ b/drivers/usb/dwc3/ep0.c @@ -1147,6 +1147,9 @@ 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); @@ -1159,7 +1162,12 @@ 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; } } |