1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/usb/core/devices.c b/drivers/usb/core/devices.c
index d95696584762..3440812b4a84 100644
--- a/drivers/usb/core/devices.c
+++ b/drivers/usb/core/devices.c
@@ -624,7 +624,7 @@ static ssize_t usb_device_read(struct file *file, char __user *buf,
         /* print devices for all busses */
         list_for_each_entry(bus, &usb_bus_list, bus_list) {
                 /* recurse through all children of the root hub */
-                if (!bus->root_hub)
+                if (!bus_to_hcd(bus)->rh_registered)
                         continue;
                 usb_lock_device(bus->root_hub);
                 ret = usb_device_dump(&buf, &nbytes, &skip_bytes, ppos,