aallttccllkk_oouutt() -- Accessible Kernel Function

iinntt (*aallttccllkk_oouutt)();

aallttccllkk_oouutt() ends  polling (previously installed  with function aallttccllkk_iinn).
It restores the  COHERENT clock rate to the value  of the manifest constant
HHZZ (at  present, 100 Hertz)  and unhooks the polling  function.  It returns
the value of the  previous pointer to the polling function.

Calling aallttccllkk_oouutt() when polling is  not already in effect does not affect
the system;  the function simply does nothing and  returns NULL.  To change
polling rate, call aallttccllkk_oouutt(), then aallttccllkk_iinn().

_S_e_e _A_l_s_o
aacccceessssiibbllee kkeerrnneell rroouuttiinneess, aallkkccllkk_iinn()

_N_o_t_e_s
Avoid  naming the  polling  function aallttccllkk():  there is  already a  kernel
symbol with this name.
