usb: host: xhci: Enable XHCI_SPURIOUS_SUCCESS for all controllers with xhci 1.0

[platform/adaptation/renesas_rcar/renesas_kernel.git] / drivers / usb / host / xhci.c

diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c
index 6bbf511..41eb4fc 100644 (file)
--- a/drivers/usb/host/xhci.c
+++ b/drivers/usb/host/xhci.c
@@ -4892,6 +4892,13 @@ int xhci_gen_setup(struct usb_hcd *hcd, xhci_get_quirks_t get_quirks)
 
        get_quirks(dev, xhci);
 
+       /* In xhci controllers which follow xhci 1.0 spec gives a spurious
+        * success event after a short transfer. This quirk will ignore such
+        * spurious event.
+        */
+       if (xhci->hci_version > 0x96)
+               xhci->quirks |= XHCI_SPURIOUS_SUCCESS;
+
        /* Make sure the HC is halted. */
        retval = xhci_halt(xhci);
        if (retval)