USB: log an error message when USB enumeration fails

This patch (as1077) logs an error message whenever the kernel is
unable to enumerate a new USB device.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 1 insertions, 0 deletions

diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index 9fc5179dfc60..1e23e360ea91 100644
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -2708,6 +2708,7 @@ loop:
                 if ((status == -ENOTCONN) || (status == -ENOTSUPP))
                         break;
         }
+        dev_err(hub_dev, "unable to enumerate USB device on port %d\n", port1);
  
 done:
         hub_port_disable(hub, port1, 1);