diff options
| -rw-r--r-- | drivers/usb/host/xhci-dbgcap.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/drivers/usb/host/xhci-dbgcap.c b/drivers/usb/host/xhci-dbgcap.c index 987f893e941c..424b571d6ca9 100644 --- a/drivers/usb/host/xhci-dbgcap.c +++ b/drivers/usb/host/xhci-dbgcap.c @@ -644,6 +644,17 @@ static void dbc_handle_xfer_event(struct xhci_hcd *xhci, union xhci_trb *event) xhci_dbc_giveback(req, status); } +static void inc_evt_deq(struct xhci_ring *ring) +{ + /* If on the last TRB of the segment go back to the beginning */ + if (ring->dequeue == &ring->deq_seg->trbs[TRBS_PER_SEGMENT - 1]) { + ring->cycle_state ^= 1; + ring->dequeue = ring->deq_seg->trbs; + return; + } + ring->dequeue++; +} + static enum evtreturn xhci_dbc_do_handle_events(struct xhci_dbc *dbc) { dma_addr_t deq; @@ -765,7 +776,8 @@ static enum evtreturn xhci_dbc_do_handle_events(struct xhci_dbc *dbc) break; } - inc_deq(xhci, dbc->ring_evt); + inc_evt_deq(dbc->ring_evt); + evt = dbc->ring_evt->dequeue; update_erdp = true; } |