hso: Earlier catch of error condition

There is no need to get an interface specification if we know it's the
wrong one.

Signed-off-by: Daniel Gimpelevich <daniel@gimpelevich.san-francisco.ca.us>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 5 insertions, 4 deletions

diff --git a/drivers/net/usb/hso.c b/drivers/net/usb/hso.c
index cba1d46e672e..5fb36ed23c1f 100644
--- a/drivers/net/usb/hso.c
+++ b/drivers/net/usb/hso.c
@@ -2886,6 +2886,11 @@ static int hso_probe(struct usb_interface *interface,
         struct hso_shared_int *shared_int;
         struct hso_device *tmp_dev = NULL;
 
+        if (interface->cur_altsetting->desc.bInterfaceClass != 0xFF) {
+                dev_err(&interface->dev, "Not our interface\n");
+                return -ENODEV;
+        }
+
         if_num = interface->altsetting->desc.bInterfaceNumber;
 
         /* Get the interface/port specification from either driver_info or from
@@ -2895,10 +2900,6 @@ static int hso_probe(struct usb_interface *interface,
         else
                 port_spec = hso_get_config_data(interface);
 
-        if (interface->cur_altsetting->desc.bInterfaceClass != 0xFF) {
-                dev_err(&interface->dev, "Not our interface\n");
-                return -ENODEV;
-        }
         /* Check if we need to switch to alt interfaces prior to port
          * configuration */
         if (interface->num_altsetting > 1)