diff options
| author | Thinh Nguyen <Thinh.Nguyen@synopsys.com> | 2019-12-18 18:14:44 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-02-11 04:35:09 -0800 |
| commit | 1dc0d21fc1e64b79a44b81ea7fcc87b173841cbe (patch) | |
| tree | 1285c335126a09275ec91459a0be463e8757ab2a /drivers/usb/dwc3/ep0.c | |
| parent | 4e5d1bf6e68f376019161afe62cd809215570dc4 (diff) | |
usb: dwc3: gadget: Check END_TRANSFER completion
commit c58d8bfc77a2c7f6ff6339b58c9fca7ae6f57e70 upstream.
While the END_TRANSFER command is sent but not completed, any request
dequeue during this time will cause the driver to issue the END_TRANSFER
command. The driver needs to submit the command only once to stop the
controller from processing further. The controller may take more time to
process the same command multiple times unnecessarily. Let's add a flag
DWC3_EP_END_TRANSFER_PENDING to check for this condition.
Fixes: 3aec99154db3 ("usb: dwc3: gadget: remove DWC3_EP_END_TRANSFER_PENDING")
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>
Diffstat (limited to 'drivers/usb/dwc3/ep0.c')
| -rw-r--r-- | drivers/usb/dwc3/ep0.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/usb/dwc3/ep0.c b/drivers/usb/dwc3/ep0.c index fd1b100d2927..6dee4dabc0a4 100644 --- a/drivers/usb/dwc3/ep0.c +++ b/drivers/usb/dwc3/ep0.c @@ -1136,8 +1136,10 @@ void dwc3_ep0_interrupt(struct dwc3 *dwc, case DWC3_DEPEVT_EPCMDCMPLT: cmd = DEPEVT_PARAMETER_CMD(event->parameters); - if (cmd == DWC3_DEPCMD_ENDTRANSFER) + if (cmd == DWC3_DEPCMD_ENDTRANSFER) { + dep->flags &= ~DWC3_EP_END_TRANSFER_PENDING; dep->flags &= ~DWC3_EP_TRANSFER_STARTED; + } break; } } |