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Merge "usb: dwc3: Fix enumeration failure with reset during transfers"

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qctecmdr 2020-09-11 08:25:28 -07:00 • committed by Gerrit - the friendly Code Review server
commit 41521da246
1 changed files with 8 additions and 2 deletions
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10
drivers/usb/dwc3/gadget.c
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@ -745,12 +745,13 @@ static int __dwc3_gadget_ep_enable(struct dwc3_ep *dep, unsigned int action)
reg |= DWC3_DALEPENA_EP(dep->number);
dwc3_writel(dwc->regs, DWC3_DALEPENA, reg);
dep->trb_dequeue = 0;
dep->trb_enqueue = 0;
if (usb_endpoint_xfer_control(desc))
goto out;
/* Initialize the TRB ring */
dep->trb_dequeue = 0;
dep->trb_enqueue = 0;
memset(dep->trb_pool, 0,
sizeof(struct dwc3_trb) * DWC3_TRB_NUM);
@ -2423,6 +2424,7 @@ static int __dwc3_gadget_start(struct dwc3 *dwc)
/* begin to receive SETUP packets */
dwc->ep0state = EP0_SETUP_PHASE;
dwc->ep0_bounced = false;
dwc->link_state = DWC3_LINK_STATE_SS_DIS;
dwc3_ep0_out_start(dwc);
@ -3287,6 +3289,10 @@ static void dwc3_gadget_reset_interrupt(struct dwc3 *dwc)
dwc3_ep0_end_control_data(dwc, dwc->eps[dir]);
else
dwc3_ep0_end_control_data(dwc, dwc->eps[!dir]);
dwc->eps[0]->trb_enqueue = 0;
dwc->eps[1]->trb_enqueue = 0;
dwc3_ep0_stall_and_restart(dwc);
}