X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=drivers%2Fusb%2Fhost%2Fxhci-mem.c;h=7432a52323e08a26605b6b61f86073d2785621bf;hb=c207e7c50f31113c24a9f536fcab1e8a256985d7;hp=8056d90690ee1bff397b0fa689f3ab9175622a6b;hpb=c66f1c62e85927357e7b3f4c701614dcb5c498a2;p=deliverable%2Flinux.git

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;