[PATCH v2 2/5] usb: dwc3: gadget: Force sending delayed status during soft disconnect

Wesley Cheng
2022-07-13T00:36:04Z

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.

Fixes: 861c010a2ee1 ("usb: dwc3: gadget: Refactor pullup()")
Signed-off-by: Wesley Cheng <quic_wcheng@quicinc.com>
---
drivers/usb/dwc3/gadget.c | 3 +++
1 file changed, 3 insertions(+)

diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
index d1d7a5e5bd7c..a455f8d4631d 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);