tree 0dbd44e16a4fbe9554d25b4dcbc17fea7207a933
parent 2a0785ea375fe93cd480599bb40d0c837ff72a2e
author André Goddard Rosa <andre.goddard@gmail.com> 1256476592 -0200
committer Greg Kroah-Hartman <gregkh@suse.de> 1260573484 -0800

serial: fix NULL pointer dereference

If kzalloc() or alloc_tty_driver() fails, we call:
    put_tty_driver(normal = NULL).

Then:
    put_tty_driver -> tty_driver_kref_put -> kref_put(&NULL->kref, ...)

Signed-off-by: André Goddard Rosa <andre.goddard@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>