USB: serial gadget: Disable endpoints on unload

After Serial gadget is being unloaded, neither serial itself, nor other
gadget stuff can be loaded subsequently.

Signed-off-by: Vitaly Bordug <vitb@kernel.crashing.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 6 insertions, 0 deletions

diff --git a/drivers/usb/gadget/serial.c b/drivers/usb/gadget/serial.c
index afdf71f76f7e..a2a1ebc947d2 100644
--- a/drivers/usb/gadget/serial.c
+++ b/drivers/usb/gadget/serial.c
@@ -1470,6 +1470,12 @@ static void /* __init_or_exit */ gs_unbind(struct usb_gadget *gadget)
                         dev->dev_ctrl_req = NULL;
                 }
                 gs_free_ports(dev);
+                if (dev->dev_notify_ep)
+                        usb_ep_disable(dev->dev_notify_ep);
+                if (dev->dev_in_ep)
+                        usb_ep_disable(dev->dev_in_ep);
+                if (dev->dev_out_ep)
+                        usb_ep_disable(dev->dev_out_ep);
                 kfree(dev);
                 set_gadget_data(gadget, NULL);
         }