Input: pxa930_trkball - fix write timeout handling

With a postfix decrement i reaches -1 rather than 0,
but after the loop it is tested whether it has become 0.

Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
1 file changed