If any function drivers request for a delayed status phase, this leads to a
SETUP transfer timeout error, since the function may take longer to process
the DATA stage. This eventually results in end transfer timeouts, as there
is a pending SETUP transaction.
In addition, allow the DWC3_EP_DELAY_STOP to be set for if there is a
delayed status requested. Ocasionally, a host may abort the current SETUP
transaction, by issuing a subsequent SETUP token. In those situations, it
would result in an endxfer timeout as well.
Reviewed-by: Thinh Nguyen <Thinh.Nguyen@xxxxxxxxxxxx>
Signed-off-by: Wesley Cheng <quic_wcheng@xxxxxxxxxxx>
---
drivers/usb/dwc3/gadget.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
index 2818e3317064..391e40c35747 100644
--- a/drivers/usb/dwc3/gadget.c
+++ b/drivers/usb/dwc3/gadget.c
@@ -2501,6 +2501,9 @@ static int dwc3_gadget_soft_disconnect(struct dwc3 *dwc)
if (dwc->ep0state != EP0_SETUP_PHASE) {
int ret;
+ if (dwc->delayed_status)
+ dwc3_ep0_send_delayed_status(dwc);
+
reinit_completion(&dwc->ep0_in_setup);
spin_unlock_irqrestore(&dwc->lock, flags);
@@ -3693,7 +3696,7 @@ void dwc3_stop_active_transfer(struct dwc3_ep *dep, bool force,
* timeout. Delay issuing the End Transfer command until the Setup TRB is
* prepared.
*/
- if (dwc->ep0state != EP0_SETUP_PHASE && !dwc->delayed_status) {
+ if (dwc->ep0state != EP0_SETUP_PHASE) {
dep->flags |= DWC3_EP_DELAY_STOP;
return;
}
