From: Sarah Sharp <sarah.a.sharp@xxxxxxxxxxxxxxx> Make sure to preserve all bits *except* the TRB_CHAIN bit when giving a Link TRB to the hardware. We need to save things like TRB type and the toggle bit in the control dword. Signed-off-by: Sarah Sharp <sarah.a.sharp@xxxxxxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxx> --- drivers/usb/host/xhci-ring.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c index 9d68747..8fb5d52 100644 --- a/drivers/usb/host/xhci-ring.c +++ b/drivers/usb/host/xhci-ring.c @@ -188,7 +188,7 @@ static void inc_enq(struct xhci_hcd *xhci, struct xhci_ring *ring, bool consumer next->link.control &= (u32) ~TRB_CYCLE; else next->link.control |= (u32) TRB_CYCLE; - next->link.control &= TRB_CHAIN; + next->link.control &= ~TRB_CHAIN; next->link.control |= chain; } /* Toggle the cycle bit after the last ring segment. */ -- 1.6.3.2 -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
