1 files changed, 5 insertions, 0 deletions

diff --git a/drivers/usb/serial/visor.c b/drivers/usb/serial/visor.c
index 60afb39eb73c..c53fbb3e0b8c 100644
--- a/drivers/usb/serial/visor.c
+++ b/drivers/usb/serial/visor.c
@@ -544,6 +544,11 @@ static int treo_attach(struct usb_serial *serial)
                 (serial->num_interrupt_in == 0))
                 return 0;
 
+        if (serial->num_bulk_in < 2 || serial->num_interrupt_in < 2) {
+                dev_err(&serial->interface->dev, "missing endpoints\n");
+                return -ENODEV;
+        }
+
         /*
         * It appears that Treos and Kyoceras want to use the
         * 1st bulk in endpoint to communicate with the 2nd bulk out endpoint,