building a new kernel from sources supped 5/16 I get the following:

n `mac68k_set_io_offsets'
../../../../arch/mac68k/dev/ser.c: At top level:
../../../../arch/mac68k/dev/ser.c:2008: warning: return-type defaults to `int'
../../../../arch/mac68k/dev/ser.c:2008: warning: no previous prototype for `sercninit'
../../../../arch/mac68k/dev/ser.c: In function `sercninit':
../../../../arch/mac68k/dev/ser.c:2019: warning: control reaches end of non-void function
../../../../arch/mac68k/dev/ser.c: At top level:
../../../../arch/mac68k/dev/ser.c:726: warning: `zsiopen' defined but not used
../../../../arch/mac68k/dev/ser.c:740: warning: `zsiclose' defined but not used
../../../../arch/mac68k/dev/ser.c:209: warning: `initted' defined but not used

Actually there's a lot more, but that's an example.

The compilation continues ok after that.

Any ideas?