mlxsw: spectrum: Use 'bitmap_zalloc()' when applicable
[ Upstream commit 2c087dfc ] Use 'bitmap_zalloc()' to simplify code, improve the semantic and avoid some open-coded arithmetic in allocator arguments. Also change the corresponding 'kfree()' into 'bitmap_free()' to keep consistency. Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> Reviewed-by: Ido Schimmel <idosch@nvidia.com> Signed-off-by: David S. Miller <davem@davemloft.net> Stable-dep-of: 483ae90d ("mlxsw: spectrum_acl_tcam: Fix stack corruption") Signed-off-by: Sasha Levin <sashal@kernel.org>
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