diff options
| -rw-r--r-- | xen/drivers/char/ehci-dbgp.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/xen/drivers/char/ehci-dbgp.c b/xen/drivers/char/ehci-dbgp.c index 301eedf22e..b900d6092e 100644 --- a/xen/drivers/char/ehci-dbgp.c +++ b/xen/drivers/char/ehci-dbgp.c @@ -1094,6 +1094,9 @@ try_next_port: dbgp_printk("n_ports: %u\n", n_ports); ehci_dbgp_status(dbgp, ""); + if ( n_ports == 0 ) + return -1; + for ( i = 1; i <= n_ports; i++ ) { portsc = readl(&dbgp->ehci_regs->port_status[i-1]); |