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-rw-r--r--drivers/usb/host/xhci-mem.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/usb/host/xhci-mem.c b/drivers/usb/host/xhci-mem.c
index 8056d90690ee..7432a52323e0 100644
--- a/drivers/usb/host/xhci-mem.c
+++ b/drivers/usb/host/xhci-mem.c
@@ -1819,7 +1819,7 @@ void xhci_mem_cleanup(struct xhci_hcd *xhci)
xhci_cleanup_command_queue(xhci);
num_ports = HCS_MAX_PORTS(xhci->hcs_params1);
- for (i = 0; i < num_ports; i++) {
+ for (i = 0; i < num_ports && xhci->rh_bw; i++) {
struct xhci_interval_bw_table *bwt = &xhci->rh_bw[i].bw_table;
for (j = 0; j < XHCI_MAX_INTERVAL; j++) {
struct list_head *ep = &bwt->interval_bw[j].endpoints;