diff options
| -rw-r--r-- | drivers/usb/dwc2/gadget.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/usb/dwc2/gadget.c b/drivers/usb/dwc2/gadget.c index d2442f421485..5930b1a3c8f0 100644 --- a/drivers/usb/dwc2/gadget.c +++ b/drivers/usb/dwc2/gadget.c @@ -2838,6 +2838,16 @@ static void dwc2_hsotg_epint(struct dwc2_hsotg *hsotg, unsigned int idx, if (idx == 0 && (ints & (DXEPINT_SETUP | DXEPINT_SETUP_RCVD))) ints &= ~DXEPINT_XFERCOMPL; + /* + * Don't process XferCompl interrupt in DDMA if EP0 is still in SETUP + * stage and xfercomplete was generated without SETUP phase done + * interrupt. SW should parse received setup packet only after host's + * exit from setup phase of control transfer. + */ + if (using_desc_dma(hsotg) && idx == 0 && !hs_ep->dir_in && + hsotg->ep0_state == DWC2_EP0_SETUP && !(ints & DXEPINT_SETUP)) + ints &= ~DXEPINT_XFERCOMPL; + if (ints & DXEPINT_XFERCOMPL) { dev_dbg(hsotg->dev, "%s: XferCompl: DxEPCTL=0x%08x, DXEPTSIZ=%08x\n", |