USB: fix transvibrator disconnect race

in disconnect you set the interface's private data to NULL. In your IO
methods you unconditionally follow the pointer into never never land.

Signed-off-by: Oliver Neukum <oliver@neukum.name>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/usb/misc/trancevibrator.c b/drivers/usb/misc/trancevibrator.c
index 33cd91d11eca..67e2fc20eeeb 100644
--- a/drivers/usb/misc/trancevibrator.c
+++ b/drivers/usb/misc/trancevibrator.c
@@ -120,8 +120,8 @@ static void tv_disconnect(struct usb_interface *interface)
         struct trancevibrator *dev;
 
         dev = usb_get_intfdata (interface);
-        usb_set_intfdata(interface, NULL);
         device_remove_file(&interface->dev, &dev_attr_speed);
+        usb_set_intfdata(interface, NULL);
         usb_put_dev(dev->udev);
         kfree(dev);
 }