Input: cm109 - validate number of endpoints before using them

[pandora-kernel.git] / drivers / input / misc / cm109.c

diff --git a/drivers/input/misc/cm109.c b/drivers/input/misc/cm109.c
index ab86051..d5b382c 100644 (file)
--- a/drivers/input/misc/cm109.c
+++ b/drivers/input/misc/cm109.c
@@ -663,6 +663,10 @@ static int cm109_usb_probe(struct usb_interface *intf,
        int error = -ENOMEM;
 
        interface = intf->cur_altsetting;
+
+       if (interface->desc.bNumEndpoints < 1)
+               return -ENODEV;
+
        endpoint = &interface->endpoint[0].desc;
 
        if (!usb_endpoint_is_int_in(endpoint))