tree eff35a1a2622dc976319fd52dab12f6bbdc8d3a1
parent 4b61bb575b1fb42ab1df228ae7812e5135f656da
author Stephen Kitt <steve@sk2.org> 1251253462 -0700
committer Dmitry Torokhov <dmitry.torokhov@gmail.com> 1251435699 -0700

Input: joydev - validate axis/button maps before clobbering current ones

Up to now axis and button map validation was done after the user-supplied
values were copied over the driver's map. This patch copies the
user-supplied values into temporary buffers and validated them before
overwriting the driver's permanent maps.

Also change JSIOCGBTNMAP and JSIOCGAXMAP to return number of bytes returned
to userspace instead of 0.

Signed-off-by: Stephen Kitt <steve@sk2.org>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>