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Signed-off-by: Yoshihiro Shimoda --- drivers/usb/host/xhci-plat.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/usb/host/xhci-plat.c b/drivers/usb/host/xhci-plat.c index 5c15e9b..4dbd56f 100644 --- a/drivers/usb/host/xhci-plat.c +++ b/drivers/usb/host/xhci-plat.c @@ -39,12 +39,19 @@ static const struct xhci_driver_overrides xhci_plat_overrides __initconst = { static void xhci_plat_quirks(struct device *dev, struct xhci_hcd *xhci) { + struct usb_hcd *hcd = xhci_to_hcd(xhci); + /* * As of now platform drivers don't provide MSI support so we ensure * here that the generic code does not try to make a pci_dev from our * dev struct in order to setup MSI */ xhci->quirks |= XHCI_PLAT; + + /* Please refer to the xhci.c about the detail of this quirk */ + if (xhci_plat_type_is(hcd, XHCI_PLAT_TYPE_RENESAS_RCAR_GEN2) || + xhci_plat_type_is(hcd, XHCI_PLAT_TYPE_RENESAS_RCAR_GEN3)) + xhci->quirks |= XHCI_CLEAR_AC64; } /* called during probe() after chip reset completes */