xhci: Change the BUGs in xhci_find_new_dequeue_state() to WARN_ONs, to
avoid bringing down the box if one of them is hit.
Cc: Greg Kroah-Hartman <gregkh@xxxxxxx>
Signed-off-by: Paul Zimmerman <paulz@xxxxxxxxxxxx>
---
drivers/usb/host/xhci-ring.c | 13 +++++++++----
1 files changed, 9 insertions(+), 4 deletions(-)
diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c
index df558f6..b4be841 100644
--- a/drivers/usb/host/xhci-ring.c
+++ b/drivers/usb/host/xhci-ring.c
@@ -479,8 +479,11 @@ void xhci_find_new_dequeue_state(struct xhci_hcd *xhci,
state->new_deq_seg = find_trb_seg(cur_td->start_seg,
dev->eps[ep_index].stopped_trb,
&state->new_cycle_state);
- if (!state->new_deq_seg)
- BUG();
+ if (!state->new_deq_seg) {
+ WARN_ON(1);
+ return;
+ }
+
/* Dig out the cycle state saved by the xHC during the stop ep cmd */
xhci_dbg(xhci, "Finding endpoint context\n");
ep_ctx = xhci_get_ep_ctx(xhci, dev->out_ctx, ep_index);
@@ -491,8 +494,10 @@ void xhci_find_new_dequeue_state(struct xhci_hcd *xhci,
state->new_deq_seg = find_trb_seg(state->new_deq_seg,
state->new_deq_ptr,
&state->new_cycle_state);
- if (!state->new_deq_seg)
- BUG();
+ if (!state->new_deq_seg) {
+ WARN_ON(1);
+ return;
+ }
trb = &state->new_deq_ptr->generic;
if ((trb->field[3] & TRB_TYPE_BITMASK) == TRB_TYPE(TRB_LINK) &&
--
1.6.5.1.69.g36942
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