Fix overflow in twin_fixed_sqrt()
Fix overflow in twin_fixed_sqrt()

Twin_fixed_sqrt() suffers from overflow. Fix it.

Signed-off-by: David Woodhouse <97b3379caa91f4ee97e44013ae4dc6350540fa9d@infradead.org>
Signed-off-by: Benjamin Herrenschmidt <a7089bb6e7e92505d88aaff006cbdd60cc9120b6@kernel.crashing.org>

freedesktop-unofficial-mirror/twin,freedesktop-unofficial-mirror/twin