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-rw-r--r--sound/usb/line6/driver.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/sound/usb/line6/driver.c b/sound/usb/line6/driver.c
index 0ff5a7d2e19f..0da6f68761e3 100644
--- a/sound/usb/line6/driver.c
+++ b/sound/usb/line6/driver.c
@@ -78,6 +78,13 @@ static int line6_start_listen(struct usb_line6 *line6)
line6->buffer_listen, LINE6_BUFSIZE_LISTEN,
line6_data_received, line6);
}
+
+ /* sanity checks of EP before actually submitting */
+ if (usb_urb_ep_type_check(line6->urb_listen)) {
+ dev_err(line6->ifcdev, "invalid control EP\n");
+ return -EINVAL;
+ }
+
line6->urb_listen->actual_length = 0;
err = usb_submit_urb(line6->urb_listen, GFP_ATOMIC);
return err;