usb: dwc3: gadget: make sure HIRD threshold is 0 in superspeed

During superspeed, HIRD threshold should always
be zero. Curent driver wasn't making sure that
was the case.

Signed-off-by: Felipe Balbi <balbi@ti.com>

diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
index 3934d0afc185eb180254d40f6e7dffd8a519331b..df9749eac6ac20ccf511c1c45e552fe484a1bf0d 100644 (file)
--- a/drivers/usb/dwc3/gadget.c
+++ b/drivers/usb/dwc3/gadget.c
@@ -2288,6 +2288,10 @@ static void dwc3_gadget_conndone_interrupt(struct dwc3 *dwc)
                 */
                reg |= DWC3_DCTL_HIRD_THRES(12);
 
+               dwc3_writel(dwc->regs, DWC3_DCTL, reg);
+       } else {
+               reg = dwc3_readl(dwc->regs, DWC3_DCTL);
+               reg &= ~DWC3_DCTL_HIRD_THRES_MASK;
                dwc3_writel(dwc->regs, DWC3_DCTL, reg);
        }