staging: gigaset: add endpoint-type sanity check

[sagit-ice-cold/kernel_xiaomi_msm8998.git] / drivers / isdn / gigaset / usb-gigaset.c

diff --git a/drivers/isdn/gigaset/usb-gigaset.c b/drivers/isdn/gigaset/usb-gigaset.c
index 42e825d..aee4880 100644 (file)
--- a/drivers/isdn/gigaset/usb-gigaset.c
+++ b/drivers/isdn/gigaset/usb-gigaset.c
@@ -708,6 +708,12 @@ static int gigaset_probe(struct usb_interface *interface,
 
        endpoint = &hostif->endpoint[0].desc;
 
+       if (!usb_endpoint_is_bulk_out(endpoint)) {
+               dev_err(&interface->dev, "missing bulk-out endpoint\n");
+               retval = -ENODEV;
+               goto error;
+       }
+
        buffer_size = le16_to_cpu(endpoint->wMaxPacketSize);
        ucs->bulk_out_size = buffer_size;
        ucs->bulk_out_epnum = usb_endpoint_num(endpoint);
@@ -727,6 +733,12 @@ static int gigaset_probe(struct usb_interface *interface,
 
        endpoint = &hostif->endpoint[1].desc;
 
+       if (!usb_endpoint_is_int_in(endpoint)) {
+               dev_err(&interface->dev, "missing int-in endpoint\n");
+               retval = -ENODEV;
+               goto error;
+       }
+
        ucs->busy = 0;
 
        ucs->read_urb = usb_alloc_urb(0, GFP_KERNEL);