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Merge "usb: dwc3: Do not process request if HWO is set for its TRB"

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qctecmdr 2020-04-24 10:11:48 -07:00 • committed by Gerrit - the friendly Code Review server
commit 70a749bbec
1 changed files with 11 additions and 0 deletions
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11
drivers/usb/dwc3/gadget.c
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@ -2830,8 +2830,19 @@ static int dwc3_gadget_ep_cleanup_completed_request(struct dwc3_ep *dep,
const struct dwc3_event_depevt *event,
struct dwc3_request *req, int status)
{
struct dwc3 *dwc = dep->dwc;
int ret;
/*
* If the HWO is set, it implies the TRB is still being
* processed by the core. Hence do not reclaim it until
* it is processed by the core.
*/
if (req->trb->ctrl & DWC3_TRB_CTRL_HWO) {
dbg_event(0xFF, "PEND TRB", dep->number);
return 1;
}
if (req->num_pending_sgs)
ret = dwc3_gadget_ep_reclaim_trb_sg(dep, req, event,
status);