From: Dan Williams <dan.j.williams@xxxxxxxxx>
Perform an unconditional toggle of the cycle bit with 'xor'.
Signed-off-by: Dan Williams <dan.j.williams@xxxxxxxxx>
Signed-off-by: Sarah Sharp <sarah.a.sharp@xxxxxxxxxxxxxxx>
---
drivers/usb/host/xhci-ring.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c
index e57163f..1e2f3f4 100644
--- a/drivers/usb/host/xhci-ring.c
+++ b/drivers/usb/host/xhci-ring.c
@@ -178,7 +178,7 @@ static void inc_deq(struct xhci_hcd *xhci, struct xhci_ring *ring)
if (ring->type == TYPE_EVENT &&
last_trb_on_last_seg(xhci, ring,
ring->deq_seg, ring->dequeue)) {
- ring->cycle_state = (ring->cycle_state ? 0 : 1);
+ ring->cycle_state ^= 1;
}
ring->deq_seg = ring->deq_seg->next;
ring->dequeue = ring->deq_seg->trbs;
--
1.8.3.3
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