powerpc/mm: Match variable types to API
sys_subpage_prot() takes an unsigned long for 'addr' then does some stuff with it and the result is stored in a signed int, i, which is eventually used as the size parameter in a copy_from_user call. Update 'i' to be an unsigned long as well and since 'nw' is used in a size_t context which, depending on whether this is 32- or 64-bit may be unsigned int or unsigned long, switch that to a size_t and always be right. Finally, since we're in the neighbourhood, make the same changes to subpage_prot_clear(). Cc: Paul Mackerras <paulus@samba.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: NJoe MacDonald <joe.macdonald@windriver.com> Signed-off-by: NPaul Gortmaker <paul.gortmaker@windriver.com> Acked-by: NPaul Mackerras <paulus@samba.org> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
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