staging: ozwpan: Check error condition before creating endpoint.

Check if interface number is correct before creating an end point.

Signed-off-by: Rupesh Gujare <rupesh.gujare@atmel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/ozwpan/ozhcd.c b/drivers/staging/ozwpan/ozhcd.c
index 4682d782abe750508be061bfbbd1e0f447da0ff2..d5a3900d41817e43389827295bfeb1edbd38a7a1 100644 (file)
--- a/drivers/staging/ozwpan/ozhcd.c
+++ b/drivers/staging/ozwpan/ozhcd.c
@@ -1247,6 +1247,8 @@ static int oz_build_endpoints_for_interface(struct usb_hcd *hcd,
        int request_heartbeat = 0;
 
        oz_dbg(ON, "interface[%d] = %p\n", if_ix, intf);
+       if (if_ix >= port->num_iface || port->iface == NULL)
+               return -ENOMEM;
        for (i = 0; i < intf->desc.bNumEndpoints; i++) {
                struct usb_host_endpoint *hep = &intf->endpoint[i];
                u8 ep_addr = hep->desc.bEndpointAddress;