The driver cannot issue the End Transfer command to the SETUP transfer.
Don't clear DWC3_EP_TRANSFER_STARTED flag to make sure that the driver
won't send Start Transfer command again, which can cause no-resource
error. For example this can occur if the host issues a reset to the
device.
Cc: stable@xxxxxxxxxxxxxxx
Fixes: 76cb323f80ac ("usb: dwc3: ep0: clear all EP0 flags")
Signed-off-by: Thinh Nguyen <Thinh.Nguyen@xxxxxxxxxxxx>
---
drivers/usb/dwc3/ep0.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/usb/dwc3/ep0.c b/drivers/usb/dwc3/ep0.c
index f3d97ad5156e..666ac432f52d 100644
--- a/drivers/usb/dwc3/ep0.c
+++ b/drivers/usb/dwc3/ep0.c
@@ -232,7 +232,7 @@ void dwc3_ep0_stall_and_restart(struct dwc3 *dwc)
/* stall is always issued on EP0 */
dep = dwc->eps[0];
__dwc3_gadget_ep_set_halt(dep, 1, false);
- dep->flags &= DWC3_EP_RESOURCE_ALLOCATED;
+ dep->flags &= DWC3_EP_RESOURCE_ALLOCATED | DWC3_EP_TRANSFER_STARTED;
dep->flags |= DWC3_EP_ENABLED;
dwc->delayed_status = false;
--
2.28.0
