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-rw-r--r--drivers/usb/host/xhci-ring.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c
index b267dae14d39..4384b86ea7b6 100644
--- a/drivers/usb/host/xhci-ring.c
+++ b/drivers/usb/host/xhci-ring.c
@@ -422,7 +422,8 @@ static void xhci_handle_stopped_cmd_ring(struct xhci_hcd *xhci,
if ((xhci->cmd_ring->dequeue != xhci->cmd_ring->enqueue) &&
!(xhci->xhc_state & XHCI_STATE_DYING)) {
xhci->current_cmd = cur_cmd;
- xhci_mod_cmd_timer(xhci);
+ if (cur_cmd)
+ xhci_mod_cmd_timer(xhci);
xhci_ring_cmd_db(xhci);
}
}