1 files changed, 1 insertions, 0 deletions

diff --git a/drivers/usb/serial/usb-serial.c b/drivers/usb/serial/usb-serial.c
index 1b924425089f..8249fd8381fb 100644
--- a/drivers/usb/serial/usb-serial.c
+++ b/drivers/usb/serial/usb-serial.c
@@ -1299,6 +1299,7 @@ static void fixup_generic(struct usb_serial_driver *device)
         set_to_generic_if_null(device, disconnect);
         set_to_generic_if_null(device, release);
         set_to_generic_if_null(device, process_read_urb);
+        set_to_generic_if_null(device, prepare_write_buffer);
 }
 
 int usb_serial_register(struct usb_serial_driver *driver)