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ptp_pch: eliminate a number of sparse warnings
This fixes a number of sparse warnings like:
warning: incorrect type in argument 2 (different address spaces)
expected void volatile [noderef] <asn:2>*addr
got unsigned int *<noident>
warning: Using plain integer as NULL pointer
Additionally this fixes a warning from checkpatch.pl like:
WARNING: sizeof pch_param.station should be sizeof(pch_param.station)
Signed-off-by: Sahara <keun-o.park@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>